Rete ovarii cystadenoma is a rare and usually benign cystic tumor near the ovary, and it is most often found in adults. Many people with Rete ovarii cystadenoma have no symptoms at first, but some notice pelvic pain, bloating, or a feeling of pressure. The early symptoms of Rete ovarii cystadenoma can look like those of other common ovarian cysts, so imaging and surgery are often needed to confirm the diagnosis. Not everyone will have the same experience. Treatment is usually surgical removal, and death from Rete ovarii cystadenoma is not expected because it is generally noncancerous.
How many people live with Rete ovarii cystadenoma?
Global and U.S. prevalence estimates for rete ovarii cystadenoma are not consistently reported by a single authoritative source. It appears to be extremely rare and is described mainly in isolated case reports and small hospital case series, so there is no dependable published count of how many people are living with it worldwide or in the United States.
Overview
Rete ovarii cystadenomaSymptoms
Rete ovarii cystadenoma often causes no symptoms at first. When symptoms do happen, people with rete ovarii cystadenoma may notice pelvic pain, bloating, a feeling of pressure, or a lower belly lump found during an exam or scan.
Outlook and prognosis
Rete ovarii cystadenoma is usually benign, and outlook after removal is generally excellent. Most people recover fully, and it rarely causes long-term health problems unless the cyst is very large or twists the ovary.
Causes and risk factors
The cause of rete ovarii cystadenoma is unclear, and most cases appear sporadic rather than inherited. No well-established lifestyle, environmental, or genetic risk factors are known, although it is usually found in adults.
Genetic influences
Genetics are not thought to play a major role in rete ovarii cystadenoma. Most cases appear sporadic, with no clear inherited pattern or well-established genetic variations linked to risk.
Diagnosis
Rete ovarii cystadenoma is usually diagnosed after a pelvic exam and imaging, often with ultrasound. A definite diagnosis of rete ovarii cystadenoma usually comes after surgery, when the tissue is examined under a microscope.
Treatment and drugs
Rete ovarii cystadenoma is usually treated with surgery to remove the cyst, and sometimes the ovary, especially if it is growing, causing pain, or looks uncertain on scans. Testing after surgery confirms the diagnosis. Most people recover well.
Symptoms
Many people with Rete ovarii cystadenoma have no symptoms at first, so it may be found by chance during a pelvic exam, scan, or surgery for another reason. When symptoms do happen, they are usually caused by the cyst pressing on nearby tissues, which can lead to pelvic discomfort, bloating, or a feeling of fullness. Early on, this might look like mild pressure after meals or a dull ache low in the belly. The early symptoms of Rete ovarii cystadenoma are often nonspecific, so other ovarian cysts and pelvic conditions can feel similar.
Some people feel completely well, even when the cyst is already present. In those cases, Rete ovarii cystadenoma is often found incidentally during imaging or an operation for something else.
A dull ache or pressure low in the abdomen is one of the more common complaints when symptoms occur. The discomfort may come and go, or linger and become more noticeable with movement or a full bladder.
The lower belly may feel swollen, tight, or unusually full. This can be easy to mistake for gas, constipation, or normal cycle-related bloating.
Some may notice a sense of heaviness or that they get full faster than usual. This can happen when the cyst takes up space in the pelvis or lower abdomen.
How people usually first notice Rete ovarii cystadenoma?
Rete ovarii cystadenoma is usually first noticed when a pelvic mass is found by chance during a routine exam, imaging test, or surgery for another reason, because many people have no clear symptoms at first. When symptoms do show up, the first warning signs are often vague pelvic or lower belly pain, a feeling of pressure or fullness, bloating, or noticing that the abdomen seems larger than usual. In some people, how rete ovarii cystadenoma is first noticed depends on its size, since larger cysts are more likely to press on nearby organs and cause discomfort or urinary symptoms.
Types of Rete ovarii cystadenoma
Rete ovarii cystadenoma is a very rare, usually benign cystic growth near the ovary. Unlike some conditions that have clear subtypes, no distinct types of Rete ovarii cystadenoma are widely recognized in routine medical practice. Symptoms do not usually differ by a named variant, because recognized variants of Rete ovarii cystadenoma have not been firmly established.
Can I slow down the onset of symptoms?
No, there is no good evidence that lifestyle changes, diet, exercise, or medicines can meaningfully delay the start of symptoms from a rete ovarii cystadenoma, which is a rare, usually noncancerous fluid-filled growth near the ovary. Healthy habits still matter for overall well-being, but they have not been shown to prevent this growth or stop symptoms from starting, and lowering general health risks is not the same as preventing this condition. There are no well-established medicines to prevent it, so the most useful step is to get checked if pelvic pain, pressure, bloating, or a fuller lower belly starts, because early evaluation can help guide monitoring or treatment if needed.
What genetics can tell you about symptoms
For people with rete ovarii cystadenoma, genetics usually cannot tell you much about which symptoms will happen, how strong they will be, or when they will start. This is a very rare, usually benign ovarian tumor, and there are no well-established inherited genetic changes known to predict its day-to-day symptoms; many symptoms, if they happen at all, relate more to the cyst’s size and location than to a person’s genes. In short, genetic testing is not generally used to forecast symptoms for this condition.
Causes and risk factors
For many, rete ovarii cystadenoma appears to develop by chance, and its exact cause is not known. Most cases are sporadic, so doctors have not linked this tumor to a specific inherited gene change. No clear lifestyle or environmental risk factors, such as smoking, diet, or chemical exposure, have been proven. Researchers are still learning how these pieces fit together. Doctors also have not confirmed clear biological risks, including hormone-related or reproductive factors, partly because rete ovarii cystadenoma is so rare.
What are the most common causes or risk factors?
For rete ovarii cystadenoma, a rare and usually noncancerous cyst-like growth near the ovary, the exact cause is not known. There are no well-proven inherited or family-related risk factors, and it has not been clearly linked to lifestyle, diet, or environmental exposures. It is most often found in adults, especially in middle age or later, so age may play a part, but clear risk factors have not been established.
Environmental and biological risk factors
Rete ovarii cystadenoma is extremely rare, so doctors do not have a clear list of causes the way they do for more common ovarian growths. Because only a small number of cases have been described, the risk factors for rete ovarii cystadenoma are not well defined. That said, biology and environment work hand in hand. So far, age and the tissue it grows from are the main biological clues, while no specific environmental exposure has been proven to raise risk.
Most reported cases of rete ovarii cystadenoma have been found in adults, often in middle age or later. This suggests age may play a role, although the evidence is limited because the tumor is so uncommon.
Rete ovarii cystadenoma develops from a small group of tubules near the ovary called the rete ovarii. In practical terms, this means it can occur only in people who have this tissue, making anatomy a basic biological factor.
No environmental trigger has been consistently linked to rete ovarii cystadenoma in the medical literature. Radiation, infections, and chemical exposures have not been confirmed as causes, largely because there are too few cases to show a clear pattern.
Genetic risk factors
Rete ovarii cystadenoma is so rare that its genetic background is still not well mapped. No specific inherited gene change has been proven to cause it, and most reported cases seem to happen sporadically rather than run in families. If you are looking into genetic risk factors for rete ovarii cystadenoma, the main takeaway is that no clear hereditary pattern is currently known.
Inherited mutations: No inherited gene mutation has been consistently linked to rete ovarii cystadenoma. Doctors do not currently have a known single-gene cause to test for in most families.
Family history: Reported cases do not show a clear pattern of this tumor being passed down through generations. A family history of ovarian tumors has not been established as a specific genetic risk factor for rete ovarii cystadenoma.
Sporadic cases: Many reported tumors appear as isolated findings, with no known inherited explanation. In practice, this means rete ovarii cystadenoma is usually viewed as sporadic rather than part of a proven inherited syndrome.
Limited research: Because this tumor is very uncommon, genetic studies have been small and few. That is why the genetic cause is often described as unknown, rather than clearly absent.
Lifestyle risk factors
For rete ovarii cystadenoma, no well-established lifestyle risk factors have been identified. This is a rare, usually benign ovarian tumor, and current medical literature does not show that everyday habits clearly cause it. When people ask about lifestyle risk factors for rete ovarii cystadenoma, the most accurate answer is that evidence is very limited and no direct links are proven.
No specific diet has been shown to cause rete ovarii cystadenoma. Eating habits may still affect overall pelvic health and recovery if surgery is needed, but they are not known to drive this tumor.
Low or high exercise levels are not known to increase the risk of rete ovarii cystadenoma. Regular activity can support general fitness and postoperative recovery, but it has no proven direct role in causing this lesion.
Smoking has not been specifically linked to rete ovarii cystadenoma in available evidence. Even so, smoking can worsen surgical healing and overall gynecologic health if treatment becomes necessary.
Alcohol use has no established direct association with rete ovarii cystadenoma. Heavy drinking may still affect general health and recovery from procedures, but it is not a proven cause of this tumor.
Risk prevention
There is no proven way to prevent rete ovarii cystadenoma itself, because this is a rare, usually benign ovarian growth and clear risk factors are not well established. For many living with concerns about ovarian cysts, prevention is mostly about noticing changes early and lowering the chance of delays in diagnosis or complications. Some prevention is universal, others are tailored to people with specific risks. If you are worried about the early symptoms of rete ovarii cystadenoma, new pelvic pain, bloating, or a feeling of pressure are good reasons to get checked.
Rete ovarii cystadenoma often cannot be prevented, but paying attention to new pelvic pain, bloating, or pressure can help it be found earlier. Early assessment may lower the risk of complications such as a larger mass or ovarian twisting.
Regular gynecology visits can help if symptoms appear or a pelvic exam suggests an ovarian mass. Prevention works best when combined with regular check-ups.
If a clinician recommends an ultrasound, having it done on time can help clarify whether a cyst looks simple or needs closer follow-up. This is one of the main ways to reduce uncertainty around rete ovarii cystadenoma.
If an ovarian cyst has already been found, follow-up appointments matter because some masses need repeat imaging or surgery to confirm what they are. You don’t need to change everything at once—every bit helps.
Can you prevent Rete ovarii cystadenoma?
No, there is no known way to prevent rete ovarii cystadenoma, a rare and usually noncancerous growth near the ovary, because its exact cause is not well understood. There are no well-proven lifestyle changes that are known to stop it from forming. Regular gynecologic checkups can sometimes help find an ovarian growth earlier, but they do not prevent it.
Transmission
Rete ovarii cystadenoma cannot be transferred from one person to another. It is not an infection, so it is not contagious and cannot spread through sex, blood, saliva, or everyday contact.
For most people, this growth seems to arise sporadically in the ovary rather than being passed down in families. When people ask about genetic transmission of Rete ovarii cystadenoma, the usual answer is that there is no well-established inherited pattern, though a doctor may still look at family history if there are other ovarian tumors or related conditions in the family.
When to test your genes
Genetic testing is not routinely recommended for rete ovarii cystadenoma, because it is a rare, usually benign ovarian tumor without a known inherited cause. Testing may be worth discussing if you also have a strong family history of ovarian, breast, colorectal, or related cancers, or if other findings raise concern for a hereditary cancer syndrome.
Diagnosis
Rete ovarii cystadenoma is usually found after an ovarian or pelvic cyst shows up on an exam or scan, often when someone has pelvic discomfort, bloating, or no symptoms at all. Because it is rare and can look like other benign ovarian growths, the diagnosis of rete ovarii cystadenoma usually becomes clearer step by step rather than from one test alone. Doctors usually begin with a pelvic exam and imaging to see where the cyst is, how big it is, and whether it has features that suggest a simple fluid-filled growth or something more complex.
Your doctor will ask about pelvic pain, pressure, bloating, menstrual changes, and whether the cyst was found by chance during another visit. A detailed family and health history can help place the ovarian finding in context, even though this tumor is not usually diagnosed by family history alone.
A pelvic exam may help doctors detect a mass or fullness near an ovary, especially if the cyst is larger. This exam cannot confirm rete ovarii cystadenoma, but it helps guide the next tests.
Pelvic ultrasound is often the first imaging test used to look at an ovarian cyst. It can show the size, shape, and internal appearance of the mass, but rare cysts like rete ovarii cystadenoma often cannot be identified with certainty on ultrasound alone.
CT or MRI may be used when the ultrasound picture is unclear or when doctors want a closer look at nearby structures. These scans can help narrow the possibilities and look for features that make a benign cyst more or less likely.
How is Rete ovarii cystadenoma diagnosed?
Doctors usually first suspect a rete ovarii cystadenoma when a pelvic exam and imaging tests, most often an ultrasound and sometimes a CT scan or MRI, show a cyst or lump near the ovary. Because scans cannot show for sure exactly what type of growth it is, the diagnosis is usually confirmed after surgery, when the removed tissue is checked under a microscope. Genetic testing is not a routine part of diagnosing this condition.
Stages of Rete ovarii cystadenoma
Rete ovarii cystadenoma does not have defined progression stages. This is because it is usually a benign cyst-like growth that is identified by its presence and size, rather than by a predictable step-by-step worsening over time. Often the process begins when you notice changes in daily life, such as ongoing pelvic discomfort, a feeling of fullness, or a mass found during imaging done for another reason; these can overlap with the early symptoms of rete ovarii cystadenoma. Doctors usually diagnose and monitor rete ovarii cystadenoma with a pelvic exam, ultrasound or other scans, and sometimes surgery to confirm exactly what the growth is.
Outlook and prognosis
The outlook for people with rete ovarii cystadenoma is excellent, because these tumors are typically benign and are usually cured with complete surgical removal. Recurrence appears to be very uncommon when the lesion is fully excised, although long-term published data are limited because the condition is rare. Most patients can expect relief of any mass-related symptoms after treatment and do not develop ongoing health problems from the tumor itself. Mortality directly related to rete ovarii cystadenoma is not expected, and deaths have not been a recognized feature of this diagnosis in the medical literature. Prognosis may depend more on factors such as tumor size, surgical complexity, and whether another gynecologic condition is present than on the cystadenoma itself.
Long-term effects
For most people, the long-term outlook for rete ovarii cystadenoma is very good because it is a benign ovarian growth. The main lasting effects, if they happen, are usually related to the cyst getting large before treatment or to the type of surgery needed to remove it. It’s important to remember that “long-term” doesn’t always mean “progressive.” In many living with rete ovarii cystadenoma, once the diagnosis is confirmed and the cyst is removed, ongoing health problems are uncommon.
Rete ovarii cystadenoma is almost always noncancerous, so long-term survival is expected to be normal. After complete removal, most people do not develop ongoing disease from the cyst itself.
If the cyst becomes large, some may have lasting or recurrent pelvic pressure, bloating, or a feeling of fullness until it is treated. These symptoms usually improve after surgery, even when the early symptoms of rete ovarii cystadenoma were easy to mistake for common stomach or menstrual problems.
A larger ovarian cyst can sometimes raise the risk of ovarian twisting or cyst rupture before treatment. If that happens, it can cause sudden severe pain and may lead to urgent surgery, but it does not usually create long-term illness once treated.
Fertility is often preserved, especially when surgery removes only the cyst and leaves healthy ovarian tissue behind. The long-term effect on hormones or future pregnancy usually depends more on how much ovary had to be removed than on the rete ovarii cystadenoma itself.
How is it to live with Rete ovarii cystadenoma?
Living with a rete ovarii cystadenoma can be uneventful for many, because these growths are usually benign and may cause no symptoms at all. When symptoms do appear, daily life may be affected by pelvic discomfort, bloating, a feeling of pressure, or worry after an unexpected finding on imaging or during surgery, but treatment often brings relief. For the people around you, the main impact is usually emotional rather than physical, with family or partners helping manage appointments, recovery, and the uncertainty that can come with hearing the word “tumor,” even when it is noncancerous.
Treatment and drugs
Treatment for rete ovarii cystadenoma usually involves surgery to remove the cyst or mass, especially if it is causing pain, growing, or looks unclear on an ultrasound or scan. Because this tumor is rare and can resemble other growths near the ovary, doctors often confirm the diagnosis only after the tissue is examined under a microscope. Not every treatment works the same way for every person, so the operation may be as limited as removing just the cyst or may include removing the ovary if the mass is large, twisted, or hard to separate safely. Since rete ovarii cystadenoma is benign, chemotherapy and radiation are not usually needed, and after successful surgery most people only need routine follow-up.
Can you cure Rete ovarii cystadenoma?
Yes. Rete ovarii cystadenoma is a rare, usually noncancerous growth near the ovary, and surgery to remove it is usually curative, meaning most people do not need any further treatment beyond follow-up visits.
Non-drug treatment
Day-to-day, this condition may cause no problems at all, or it may bring pelvic pressure, bloating, or discomfort that starts to interfere with work, exercise, or sex. Because rete ovarii cystadenoma is usually benign, non-drug care often focuses on watching the cyst, easing symptoms, and deciding whether a procedure is needed based on size, growth, and how you feel. For many, treatment begins not at the pharmacy, but with follow-up visits and imaging to make sure the mass is behaving in a low-risk way. If symptoms are persistent or the diagnosis is uncertain, surgery is often the main treatment for rete ovarii cystadenoma.
If the cyst is small and not causing symptoms, careful monitoring may be all that is needed. This usually involves pelvic exams and repeat ultrasound scans to check whether it stays stable or changes over time.
Ultrasound is commonly used to track the cyst and look at its shape, size, and fluid content. In some cases, MRI can give a clearer picture when doctors want more detail before deciding on next steps.
If the cyst is causing pain, getting larger, or cannot be identified with confidence, minimally invasive surgery may be recommended. This can remove the cyst through small cuts in the abdomen, often with a shorter recovery than open surgery.
A larger operation may be needed if the mass is very large, hard to reach safely, or more complex on imaging. This approach gives the surgeon more room to examine the area and remove the growth securely.
Your genes may have an impact on how drugs work for you
For people with rete ovarii cystadenoma, treatment is usually based on watching the cyst or removing it with surgery, so medicines often do not play a major role. Because of that, there is no well-established evidence that inherited gene differences meaningfully change how people respond to treatment for this condition itself. If someone needs medicines for pain, anesthesia, or other health problems around the time of surgery, their genes can sometimes affect how their body handles those drugs, but that is a separate issue from the cystadenoma itself.
Pharmacological treatments
Medicines do not usually treat rete ovarii cystadenoma itself. For many living with rete ovarii cystadenoma, treatment is more often careful monitoring or surgery if the cyst is causing pain, pressure, or uncertainty on imaging. Drugs are mainly used to ease symptoms around the cyst or during recovery, rather than to remove it. Not everyone responds to the same medication in the same way.
Acetaminophen and nonsteroidal anti-inflammatory drugs such as ibuprofen or naproxen may help with pelvic pain or discomfort. These drugs do not shrink a rete ovarii cystadenoma, but they can make day-to-day symptoms easier to manage.
If pain is more severe, a doctor may prescribe a short course of stronger pain medicine, sometimes including opioid-based drugs after a procedure. These are usually used only briefly because of side effects such as drowsiness, constipation, and dependence risk.
If the cyst causes nausea or symptoms around surgery, medicines such as ondansetron or metoclopramide may be used. This is supportive care, not a treatment for the growth itself.
Antibiotics are not routine for rete ovarii cystadenoma because it is not an infection. They may be used only if there is a separate infection concern, such as after surgery or if another pelvic condition is present.
Genetic influences
Hearing that you have a rare ovarian growth such as rete ovarii cystadenoma can quickly raise questions about whether it could affect other relatives. It’s natural to ask whether family history plays a role. So far, there is no well-established inherited gene change known to cause rete ovarii cystadenoma, and most reported cases seem to happen sporadically rather than being passed down through families. Because this tumor is so uncommon, research on the genetic causes of rete ovarii cystadenoma is limited, so genetic testing is not usually recommended just for this diagnosis. If your family has a strong history of ovarian, breast, or related cancers, your doctor may still look at the broader family pattern and decide whether genetics advice would be helpful for your overall care.
Is Rete ovarii cystadenoma genetic?
Genetics are not thought to play a major role in rete ovarii cystadenoma. Most cases appear sporadic, with no clear inherited pattern or well-established genetic variations linked to risk.
Having a genetic risk is not necessarily a diagnosis
Changes in genes are a usual part of human biology and are widely found across the general population. Most of these changes do not directly affect health and simply reflect normal human variation. For many genes, having a change associated with a condition points to a possible link rather than a certain diagnosis, especially when several genes and environmental influences play a role. In some situations, though, one well-understood change in a particular gene is enough to confirm a diagnosis.
Pharmacogenetics—how genetics influence drug effects
For most people living with rete ovarii cystadenoma, treatment decisions are usually driven by symptoms, scan findings, and whether the growth can be clearly identified, not by gene-based drug matching. Because rete ovarii cystadenoma is a rare and usually benign cyst near the ovary, care most often involves surgical removal or follow-up rather than long-term medicine treatment. Genetics is only one factor, and in this condition it often plays a much smaller role in treatment than the cyst’s size, location, and how certain the diagnosis is before surgery. If you are wondering about genetic testing for rete ovarii cystadenoma, it is not usually part of routine treatment planning, since there are no well-established gene results that guide specific drugs for this tumor. Doctors may think about broader hereditary cancer testing only if there is a strong family history or features that suggest a different ovarian tumor, which can help make sure the right diagnosis and care plan are chosen.
Interactions with other conditions
Rete ovarii cystadenoma usually does not directly cause or worsen other diseases, but it can overlap with other pelvic or ovarian conditions in ways that affect diagnosis and day-to-day symptoms. For example, if someone also has endometriosis, uterine fibroids, or another ovarian cyst, pelvic pressure, bloating, or discomfort may be hard to pin on one cause. Having more than one diagnosis can make symptoms feel harder to untangle. In practice, this benign growth is often most relevant because it can resemble other adnexal masses on imaging, including more common ovarian tumors, so doctors may need careful follow-up or surgery to tell them apart. If early symptoms of Rete ovarii cystadenoma appear alongside another gynecologic problem, the main issue is usually symptom overlap rather than one disease making the other biologically worse. Open communication with healthcare providers helps, especially if more than one specialist is involved or symptoms change over time.
How genes can cause diseases
Humans have more than 20,000 genes, each carrying out one or a few specific functions in the body. One gene instructs the body to digest lactose from milk, another tells the body how to build strong bones and another prevents the body's cells from beginning to multiply uncontrollably and developing into cancer. As all of these genes combined are the building instructions for our body, a defect in one of these genes can have severe health consequences.
Through decades of genetic research, we know the genetic code of any healthy/functional human gene. We have also identified that in certain positions on a gene, some individuals may have a different genetic letter from the one you have. We call these hotspots "Genetic Variations" or "Variants" in short. In many cases, studies have been able to show that having the genetic letter "G" in the position makes you healthy, but having the letter "A" in the same position disrupts the gene function and causes a disease. Genopedia allows you to view these variants in genes and summarizes all that we know from scientific research, which genetic letters (Genotype) have good or bad consequences on your health or on your traits.
What other conditions can cause similar symptoms to Rete ovarii cystadenoma?
Other ovarian cysts and other non-cancerous growths of the ovary are the most common look-alikes, because they can also cause pelvic pain, bloating, or a feeling of pressure in the lower belly. Endometriosis and fibroids in the uterus can cause similar ongoing pelvic discomfort as well. Less often, some ovarian cancers can cause similar symptoms too, which is why doctors usually need scans and sometimes surgery to tell them apart.
History
For many living with an ovarian cyst or mass, the first part of the story is not about history at all. It is often a scan done for pelvic pain, bloating, or a routine gynecology visit that shows a growth no one was expecting. Rete ovarii cystadenoma has a long medical history of being easy to miss, largely because it is rare and usually benign, and because it sits in a part of the ovary that was not always well understood.
Earlier doctors and pathologists described cysts near the ovarian hilum, the area where blood vessels and supporting tissues enter the ovary, but separating one type from another was not simple. These growths could look similar to other ovarian cysts under the microscope or during surgery. Initially understood only through symptoms, later this tumor was recognized as a distinct benign growth linked to the rete ovarii, a small network of channels in the ovary that most people never hear about unless a pathology report mentions it.
As pathology improved over the 20th century, doctors became better at telling benign cystadenomas apart from other ovarian tumors. That mattered because the name affects follow-up, treatment decisions, and peace of mind. A woman might be told after surgery that the mass was not the more common kind of ovarian cyst that had first been suspected, but a much rarer benign tumor instead.
Modern imaging has helped doctors find adnexal masses earlier, but rete ovarii cystadenoma is still usually confirmed only after the tissue is examined carefully. In many cases, it has been reported in medical journals as a single case or a small group of cases rather than in large studies. That tells you something important: this is an uncommon condition, and much of what medicine knows about it has come from careful observation over time rather than from big trials.
Today, the history of rete ovarii cystadenoma is really a story of improving classification. What once may have been grouped with other cystic ovarian lesions can now be identified more accurately. Knowing that history helps explain why people searching for early symptoms of rete ovarii cystadenoma may find only limited information: the condition is rare, often discovered incidentally, and has been more clearly recognized only as pathologists refined how these tumors are described.