Anal margin basal cell carcinoma is a rare skin cancer that starts in the skin around the anus. People with anal margin basal cell carcinoma often notice a slow-growing lump, sore, or scab that bleeds or doesn’t heal. It usually grows locally over months to years and rarely spreads, but it can damage nearby tissue if untreated. Treatment is most often surgical removal, and many people do well when it is caught early. If you notice ongoing changes, it may be worth checking in with a doctor.
Overview
Anal margin basal cell carcinomaSymptoms
Anal margin basal cell carcinoma may look like a small pearly or scaly bump that slowly grows. Early symptoms include itching, tenderness, bleeding with wiping, or a sore that won’t heal. Some notice crusting, ulceration, or a firm nodule.
Outlook and prognosis
Most people with anal margin basal cell carcinoma do well because it tends to grow slowly and is usually found early. Local surgery often removes it completely, with low rates of spread. Ongoing skin and anal checks help catch rare recurrences.
Causes and risk factors
Anal margin basal cell carcinoma risk rises with older age, fair skin, prior sun or radiation exposure, and a history of skin cancer. Immunosuppression and chronic skin irritation or scarring contribute. Inherited syndromes (Gorlin) and arsenic exposure also increase risk.
Genetic influences
Genetics plays a modest role in anal margin basal cell carcinoma. Most cases arise from lifelong sun or ultraviolet exposure and aging skin, not inherited mutations. Rarely, syndromes like basal cell nevus (Gorlin) syndrome increase risk and lead to multiple tumors.
Diagnosis
Diagnosis of Anal margin basal cell carcinoma starts with a careful exam of the anal margin and nearby skin. Doctors confirm it by taking a small tissue sample (biopsy) for pathology. Imaging may assess size or deeper involvement.
Treatment and drugs
Anal margin basal cell carcinoma is usually managed with surgery to remove the tumor with a safety margin, often curing it. Small, well-defined spots may be treated with Mohs surgery or local excision. Selected cases use radiation or topical therapies when surgery isn’t ideal.
Symptoms
Anal margin basal cell carcinoma often shows up as skin changes at the edge of the anus that don’t heal or keep coming back. You might notice small changes at first. Early symptoms of anal margin basal cell carcinoma can be subtle—like a sore spot that bleeds with wiping, irritation that lingers, or a new bump that slowly grows. Over time, the area may become tender, itchy, or more likely to bleed with friction or bowel movements.
A spot at the anal edge that doesn’t heal over weeks is common. It may scab, crust, or reopen, especially with wiping. This can be a sign of anal margin basal cell carcinoma.
A smooth, shiny bump that looks pearly or translucent can slowly enlarge. Tiny blood vessels may be visible on the surface. These bumps may bleed after friction.
You may notice blood on toilet paper, underwear, or after a bath. The area can bleed easily after minor irritation. Persistent bleeding around the anal margin warrants a medical check.
Ongoing itch or a burning sensation around the anus can develop. Moisture, discharge, or soreness may make sitting uncomfortable. These symptoms can occur with anal margin basal cell carcinoma but also with hemorrhoids or eczema.
How people usually first notice Anal margin basal cell carcinoma?
Many people first notice anal margin basal cell carcinoma as a small, slowly growing bump or sore at the edge of the anus that doesn’t heal, sometimes mistaken for a skin tag, hemorrhoid, or fissure. It may feel itchy, tender, bleed with wiping, or crust over, and the area can look pearly, pink, or scaly. Because it often develops over months, the “first signs of anal margin basal cell carcinoma” are usually a persistent, nonhealing spot or changing lesion that prompts a clinician to examine and biopsy it.
Types of Anal margin basal cell carcinoma
Anal margin basal cell carcinoma is an uncommon skin cancer that starts at the edge of the anus, where skin-like tissue is present. Day to day, people usually notice a slowly growing, pearly or scaly spot that may itch, bleed with wiping, or form a sore that doesn’t fully heal. Clinicians often describe them in these categories: nodular, superficial, infiltrative, and basosquamous, which reflect how the tumor grows and how likely it is to come back. Understanding the main types of anal margin basal cell carcinoma can help you and your care team discuss the best treatment and what to watch for with different types of anal margin basal cell carcinoma.
Nodular type
A dome-shaped, pearly bump that may have tiny visible blood vessels and sometimes an open center. It often bleeds with friction or wiping and may crust over. This is the most common pattern and is usually well-defined.
Superficial type
A thin, pink or red scaly patch that can look like eczema or a rash. Edges may be slightly raised with a subtle, threadlike border. It tends to spread across the surface but is usually less deep.
Infiltrative type
A flatter, scar-like or firm area that can be hard to outline on exam. It may feel thicker under the skin and can grow along tissue planes. This pattern is more likely to have indistinct edges and recur if margins are not clear.
Basosquamous type
A mixed pattern showing features of basal and squamous cells under the microscope. It can behave more aggressively than typical basal cell types. Close follow-up is usually recommended.
What genetics can tell you about symptoms
People with certain PTCH1 or SUFU gene changes, which disrupt the Hedgehog signaling pathway (a cell-growth control system), may develop multiple or earlier-onset basal cell carcinomas, including around the anal margin. These variants can mean tumors grow faster, recur, or appear alongside jaw cysts and other skin lesions.
Causes and risk factors
Ultraviolet light from the sun or tanning beds raises overall risk for basal cell skin cancers, though the anal margin is usually less exposed.
Risk for anal margin basal cell carcinoma also rises with age, lighter skin that burns easily, and being male.
Weak immune defenses, prior radiation to the pelvis, and chronic irritation or inflammation around the anus can increase local risk.
Exposure to arsenic and a personal history of basal cell cancer can make another tumor more likely.
Rare inherited conditions, such as basal cell nevus (Gorlin) syndrome or xeroderma pigmentosum, also raise risk, and doctors distinguish between risk factors you can change and those you can’t.
Environmental and biological risk factors
Anal margin basal cell carcinoma is uncommon and develops where the outer skin meets the anus. People often worry about early symptoms of anal margin basal cell carcinoma, but knowing what raises risk can guide checkups and prompt care. Doctors often group risks into internal (biological) and external (environmental). Below are key factors linked with this cancer.
As skin ages, DNA repairs less efficiently and past exposures add up. Risk of basal cell skin cancers, including at the anal margin, rises after midlife.
Skin with less natural pigment has less protection from UV damage. People with fair or freckled skin have a higher chance of basal cell cancers even on covered areas.
Men develop basal cell cancers slightly more often than women. This pattern is seen even at uncommon sites like the anal margin.
A weakened immune system makes it harder to find and fix early cancer changes. Transplant medicines or immune-weakening illnesses can raise the chance of anal margin basal cell carcinoma.
Genetic risk factors
Several inherited traits and tumor-level gene changes can influence anal margin basal cell carcinoma. Carrying a genetic change doesn’t guarantee the condition will appear, but it can shift risk and the age it shows up. Understanding the genetic risk factors for anal margin basal cell carcinoma can help guide tailored monitoring and family conversations.
Gorlin syndrome: An inherited change in the PTCH1 or SUFU gene greatly raises lifetime risk for basal cell cancers on many body sites. This can include anal margin basal cell carcinoma, sometimes appearing earlier than usual.
Xeroderma pigmentosum: DNA-repair genes don’t work properly, so cells collect damage quickly and cancers can develop at young ages. People with this condition have a markedly higher chance of basal cell carcinoma, including at the anal margin.
Bazex-Dupré-Christol syndrome: This rare inherited condition causes early-onset basal cell cancers along with hair and skin changes. It signals a strong genetic risk that may include less typical sites.
Rombo syndrome: A rare inherited skin disorder linked to multiple basal cell carcinomas in adulthood. Families with this pattern may share a genetic change passed across generations.
Hedgehog pathway mutations: Many basal cell tumors carry acquired changes in PTCH1 or SMO that permanently switch growth signals on. These tumor-only changes can drive anal margin basal cell carcinoma even when no inherited syndrome is present.
TP53 gene changes: Damage to this key guardian gene inside tumor cells weakens DNA repair and cell-cycle control. Such changes are common drivers across basal cell cancers.
Family history pattern: Several close relatives with multiple or early basal cell cancers can point to an inherited predisposition. In that setting, anal margin basal cell carcinoma may be part of the same risk spectrum.
Pigment gene variants: Certain inherited changes, including MC1R variants tied to red hair or fair skin, have been associated with a higher chance of basal cell carcinoma. These variants raise overall risk but do not determine where on the body cancers may appear.
Lifestyle risk factors
Anal margin basal cell carcinoma is uncommon, but certain daily habits can influence local skin stress and inflammation that may raise risk over time. The lifestyle risk factors for Anal margin basal cell carcinoma center on behaviors that increase ultraviolet exposure, friction, moisture, or chronic irritation of the perianal skin. Adjusting hygiene, clothing, diet, and activity patterns may lower these triggers.
Deliberate perineal sunning or tanning beds can expose the anal margin to ultraviolet rays that damage skin DNA. Avoiding intentional exposure and using coverage lowers cumulative UV dose.
Ongoing perianal dermatitis from moisture, friction, or harsh cleansing may promote abnormal cell changes. Keeping the area dry and minimizing irritants can reduce inflammation.
Scented wipes, bleaching creams, or strong astringents can injure the perianal skin barrier. Switching to gentle, unscented cleansers and avoiding caustic topicals helps protect the area.
Skin folds increase moisture, heat, and friction around the anal margin, sustaining low-grade inflammation. Weight loss can reduce maceration and lessen chronic skin irritation.
Risk prevention
Anal margin basal cell carcinoma is rare, but many of the same steps that lower overall skin cancer risk can help here too. Focus on protecting your skin, catching changes early, and managing medical risks that raise your chances. Prevention works best when combined with regular check-ups. If you’ve had skin cancer before or take immune-suppressing medicines, ask about a tailored plan.
Daily sunscreen on exposed skin and sun-smart clothing reduce overall basal cell risk. Even though the anal margin isn’t sun-exposed, lowering total UV damage can still help.
Skip indoor tanning, which sharply increases basal cell skin cancers. This lowers your lifetime chance of anal margin basal cell carcinoma as part of overall risk reduction.
Look monthly for new sores, pearly bumps, or patches that bleed or don’t heal. If you notice possible early symptoms of anal margin basal cell carcinoma, book a prompt exam.
Schedule periodic skin checks, especially if you’ve had skin cancer, fair skin, or lots of sun exposure. Ask your clinician to examine the anal margin if you have symptoms or past lesions nearby.
Transmission
Anal margin basal cell carcinoma is not contagious and cannot be transferred from one person to another. It does not spread through sexual activity, skin-to-skin contact, blood, shared towels, bathrooms, or toilet seats. Unlike some anal cancers linked to human papillomavirus (HPV), anal margin basal cell carcinoma is not caused by an infection.
Most cases develop from genetic changes that build up in skin cells over time; rarely, an inherited syndrome can raise risk, but the cancer itself is not passed down in families. If you’re wondering how anal margin basal cell carcinoma is transmitted, it isn’t—being around someone with it does not put you at risk.
When to test your genes
Consider genetic testing if you were diagnosed at an unusually young age, have multiple basal cell cancers, or a strong family history of skin cancers or related tumors. People with features suggesting a hereditary syndrome (like Gorlin syndrome) should be referred to genetics for targeted testing. Testing can guide surveillance, sun protection strategies, and treatment choices.
Diagnosis
Anal margin basal cell carcinoma is often first noticed as a small, stubborn sore or a pearly bump near the anus that doesn’t heal, sometimes with itching, bleeding, or mild pain when sitting. For many, the first step comes when everyday activities start feeling harder, like wiping causing stinging or noticing spots of blood on toilet paper. Doctors usually begin with a close look at the skin and a careful exam, then confirm the diagnosis with a small tissue sample. Understanding the diagnosis of anal margin basal cell carcinoma typically involves a focused skin evaluation and targeted tests to see how deep it goes and whether nearby areas are affected.
Your clinician asks about a non-healing spot, itching, bleeding, pain, or changes over time. They also review sun exposure, prior skin cancers, and any treatments tried.
The anal margin and nearby skin are inspected in good light to assess size, color, texture, and any ulcer or crust. This helps distinguish a typical basal cell pattern from rashes or hemorrhoids.
A handheld scope lets the clinician see fine surface details like tiny blood vessels and translucency. These patterns can support suspicion for basal cell cancer before a biopsy.
A gloved exam of the anal canal and a brief look inside with a small scope check whether the growth extends inward. This distinction guides how anal margin basal cell carcinoma is treated and monitored.
Stages of Anal margin basal cell carcinoma
Anal margin basal cell carcinoma does not have defined progression stages. Instead, it usually grows slowly and stays local to the skin around the anus, so care is guided by tumor size, depth, and whether it has been fully removed, rather than by numbered stages. Early symptoms of anal margin basal cell carcinoma may include a small, slowly growing bump, a sore that doesn’t heal, mild bleeding, or itching that leads to an exam and a skin biopsy to confirm the diagnosis. Different tests may be suggested to help confirm the diagnosis and rule out rare spread.
Outlook and prognosis
Looking ahead can feel daunting, but most people with anal margin basal cell carcinoma do well when it’s found early and fully removed. This skin cancer at the edge of the anus tends to grow slowly and stays local rather than spreading through the body. Surgeons can often cure it with a small margin of normal tissue; some cases need Mohs surgery to spare healthy skin while clearing all cancer cells. Radiation is sometimes used if surgery isn’t possible, or to reduce the chance of it coming back in the same spot.
Doctors call this the prognosis—a medical word for likely outcomes. For localized anal margin basal cell carcinoma, long-term survival is excellent, and cancer‑specific deaths are very rare. Recurrence can happen, most often in the first few years, especially if the original tumor was large, had aggressive features, or margins were close. Knowing the early symptoms of anal margin basal cell carcinoma—like a nonhealing sore, a pearly bump, or bleeding with wiping—can prompt faster evaluation and treatment.
Everyone’s journey looks a little different. People with weaker immune systems, a history of multiple skin cancers, or very sun‑damaged skin may face a higher risk of new or recurrent tumors and need closer follow‑up. Most follow‑up plans include regular skin and anal margin checks for several years; if anything new appears between visits, call your care team. Talk with your doctor about what your personal outlook might look like.
Long-term effects
Anal margin basal cell carcinoma usually has an excellent outlook after localized treatment, but the area’s sensitivity can mean some lingering skin and comfort changes. Long-term effects vary widely, and many people have little to no ongoing impact once the site heals. Knowing the early symptoms of anal margin basal cell carcinoma can lead to smaller treatments and fewer long-term effects. Recurrence in the same area is the main long-term concern, while spread to distant sites is very uncommon.
The cancer can return in the same spot, especially if the first removal had narrow edges. If it comes back, it is often small and treatable with another focused procedure.
Spread to lymph nodes or distant organs is very uncommon in anal margin basal cell carcinoma. When it happens, doctors plan additional treatment tailored to the location.
If treatment is close to the sphincter, some may notice urgency or minor leakage at first. These changes are usually mild and improve as tissues heal.
A firm or tight scar can cause pulling, pressure with sitting, or discomfort during bowel movements. This often softens over months but may persist to a mild degree.
How is it to live with Anal margin basal cell carcinoma?
Living with anal margin basal cell carcinoma can be unsettling at first, especially if you notice a sore, scab, or small lump that doesn’t heal and makes sitting or wiping uncomfortable. Day to day, people often adjust how they sit, choose softer clothing, and use gentle hygiene to reduce irritation, while planning around appointments for evaluation and treatment. Most cases are slow-growing and highly treatable, which helps many keep routines, work, and relationships steady; partners or family may step in with rides, childcare, or simply reassurance during procedures and healing. Open communication with loved ones and your care team often eases embarrassment and keeps pain and worry manageable.
Treatment and drugs
Anal margin basal cell carcinoma is usually treated with surgery to remove the cancer with a small rim of healthy skin; for many, this can be done as an outpatient procedure with local anesthesia. When the spot is small and well defined, standard excision or curettage with cautery may be used; for edges that are hard to see or in tight areas near the anus, Mohs micrographic surgery can help spare healthy tissue while checking margins in real time. If surgery isn’t a good fit due to other health issues or the tumor’s location, doctors may consider radiation therapy to target remaining cancer cells, and in select cases, a topical or injected treatment may be used for very superficial disease. Treatment plans often combine several approaches. Ask your doctor about the best starting point for you.
Non-drug treatment
Anal margin basal cell carcinoma is usually managed with procedures that remove or destroy the tumor while protecting bowel control and comfort. Non-drug treatments often lay the foundation for care, with choices tailored to tumor size, depth, and location relative to the anal sphincter. When treatment follows early symptoms of anal margin basal cell carcinoma—such as a non-healing sore or a scaly spot—less invasive options may be possible. Your team will balance effectiveness, healing time, and the chance of recurrence when recommending a plan.
The cancer is removed layer by layer and checked under a microscope in real time. This maximizes cure rates while sparing healthy tissue near the sphincter.
The tumor and a small rim of normal tissue are surgically removed in one session. Surgeons aim to clear the cancer while preserving continence and comfort.
Focused beams treat the cancer when surgery is not advisable or as a backup if margins are close. It can be helpful for people who want to avoid an operation or have medical risks.
A small, shallow tumor may be scraped away and the base gently cauterized. This option is generally reserved for very superficial spots in safer areas of the anal margin.
Your genes may have an impact on how drugs work for you
Some medicines for anal margin basal cell carcinoma work differently depending on genes that control drug breakdown and tumor growth signals. Genetic testing can sometimes guide dose, predict side effects, and suggest targeted options, but surgery remains the mainstay for most.
Pharmacological treatments
Medicines are sometimes used for anal margin basal cell carcinoma when surgery or radiation aren’t ideal, or when the cancer is advanced or has come back. Although early symptoms of anal margin basal cell carcinoma can be subtle, drug options focus on shrinking the tumor, easing surface changes, or controlling spread. Not everyone responds to the same medication in the same way. Your care team will match treatments to the tumor’s size, depth, and location, and to your overall health.
This immune-stimulating cream can help clear some small, superficial tumors on or near the anal margin. It may cause redness, soreness, or burning at the application site, so doctors monitor skin tolerance closely. Treatment courses typically last several weeks.
This chemotherapy cream targets fast-growing surface cells and may be used for very thin, superficial spots. Skin irritation is common, and careful application is important around delicate anal skin. Your doctor may adjust how often you apply it to balance benefit and side effects.
Vismodegib and sonidegib are oral drugs for locally advanced or metastatic disease when surgery or radiation aren’t options. They block a growth pathway that many basal cell cancers rely on, which can shrink or stabilize tumors. Side effects like muscle cramps, taste changes, and hair thinning are common but often manageable.
This IV medicine helps the immune system find and attack cancer cells, typically used if hedgehog inhibitors stop working or aren’t suitable. Some immune-related side effects can affect organs, so regular check-ins and blood tests are key. Doctors adjust treatment plans regularly to balance control of the cancer with safety.
Genetic influences
Anal margin basal cell carcinoma is usually not inherited. It’s natural to ask whether family history plays a role. In most cases, this cancer starts when skin cells in that area acquire gene changes over time that switch on growth signals—often through a pathway called hedgehog—and these changes stay confined to the tumor, so they aren’t passed to children. Rarely, a hereditary condition such as Gorlin syndrome can raise the chance of developing many basal cell cancers, including around the anal margin, and this tends to happen at a younger age. If there’s a family history of anal margin basal cell carcinoma or multiple early skin cancers, your care team may discuss genetic counseling and whether genetic testing could be useful. Even when a genetic predisposition is present, many people never develop cancer.
Is Anal margin basal cell carcinoma genetic?
Genetics plays a modest role in anal margin basal cell carcinoma. Most cases arise from lifelong sun or ultraviolet exposure and aging skin, not inherited mutations. Rarely, syndromes like basal cell nevus (Gorlin) syndrome increase risk and lead to multiple tumors.
Pharmacogenetics—how genetics influence drug effects
For many with anal margin basal cell carcinoma, surgery is the main treatment, but when the cancer is advanced, comes back, or surgery isn’t possible, medicines may be used—and the tumor’s genes can shape which ones are likely to help. Doctors can use your tumor’s genetic information to match you with targeted treatment or to plan the next step if a drug stops working. Many basal cell cancers are driven by changes in a growth-signal pathway called “hedgehog,” so treatment options for anal margin basal cell carcinoma can include drugs that block this pathway.
Over time, the cancer can develop new changes that make it less sensitive to one of these drugs; when that happens, switching medicines or using immunotherapy, which helps your immune system target the cancer, may be considered. Standard pharmacogenetic testing of your blood to see how you process a drug isn’t usually needed for these treatments, but your team will watch for drug interactions and other factors that affect levels and side effects. If you live with a rare inherited condition linked to many basal cell cancers (often called Gorlin syndrome), your doctors may tailor care more closely and sometimes avoid certain treatments like radiation.
Interactions with other conditions
Early symptoms of anal margin basal cell carcinoma can look a lot like common anal problems—itching, a small sore that doesn’t heal, or a painless bump—so hemorrhoids, fissures, or dermatitis may mask what’s going on and delay diagnosis. People with weakened immune systems (such as those living with HIV, after an organ transplant, or on long-term steroids or biologic drugs) can develop more skin cancers and may heal more slowly after treatment for anal margin basal cell carcinoma. Doctors call it a “comorbidity” when two conditions occur together. Diabetes, poor circulation, and smoking can raise the risk of infection and bleeding and can slow recovery after surgery; blood thinners may also increase bleeding during or after procedures. Inflammatory bowel disease—especially perianal Crohn’s—can complicate planning and healing, sometimes increasing the chance of fistulas or abscesses near the treatment site. Unlike the more common anal squamous cell cancer, which is often linked to HPV, anal margin basal cell carcinoma doesn’t have a clear HPV connection, though HPV-related changes can still make the exam more complex. People who’ve had prior radiation to the pelvic or anal area, those with genetic conditions that cause multiple skin cancers, and anyone with a history of basal cell carcinoma elsewhere have a higher chance of additional skin cancers and benefit from regular full-skin checks.
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.
History
Throughout history, people have described slow‑growing sores at the edge of the anus that crusted, bled a little, then lingered instead of healing. In daily life, this might have meant a small “pimple‑like” spot that caught on toilet paper or a scab that kept returning. Only much later did clinicians recognize that, in a small number of cases, these stubborn lesions were actually Anal margin basal cell carcinoma, a skin cancer arising in the skin around the anal opening rather than inside the anal canal.
First described in the medical literature as an uncommon variant of basal cell cancer in a sun‑protected area, reports from the mid‑20th century highlighted how easily it could be mistaken for hemorrhoids, fissures, or chronic irritation. Early case series focused on how it behaved like basal cell cancers elsewhere on the body: typically slow to spread, locally destructive if ignored, and often curable when fully removed. Initially understood only through symptoms, later pathology work clarified its hallmarks under the microscope, which helped separate it from squamous cell cancers and from noncancer causes of anal margin sores.
Over time, descriptions became more precise. Surgeons and dermatologists noted that Anal margin basal cell carcinoma tended to appear in older adults and was more common in people with a history of other skin cancers or long‑standing skin inflammation. As cancer registries improved, it became clear this diagnosis was rare compared with other anal and skin cancers. With each decade, treatment shifted from wide, deforming operations toward more tailored surgery that aims to clear the tumor while preserving function. In select cases, dermatologic techniques developed for facial skin cancers, like staged excisions that check edges as they go, were adapted to this sensitive area to lower the chance of the cancer coming back.
In recent decades, awareness has grown as specialists in colorectal surgery, dermatology, and oncology compared outcomes and refined follow‑up plans. Imaging and better biopsy methods reduced uncertainty before surgery. While radiation has a role for some people who cannot have an operation, the historical throughline remains that complete removal with clear margins offers the best long‑term control for most. Historical differences highlight why careful evaluation matters: what looks like a common anal problem at first glance may need a skin‑cancer mindset to get the right diagnosis and plan.
Today’s approach builds on those early observations—recognizing a persistent, nonhealing spot; confirming the diagnosis with a biopsy; and choosing treatment that balances cure with comfort and continence. Knowing the condition’s history helps explain why second opinions are sometimes sought and why doctors keep a close eye on the area after treatment, especially in the first few years when recurrences, if they happen, are most likely to appear.