is a usually harmless skin cyst containing tissue like hair or oil.

is a rare, usually benign cyst in the brain or spinal cord.

is a rare genetic condition affecting skin, teeth, and hair development.

is a rare genetic condition affecting hair, skin, and sometimes nails.

is a rare inherited skeletal disorder causing short stature and joint laxity.

is cancer in the lower part of the large intestine.

is a rare inherited muscle disease that can also affect the heart.

is a genetic muscle disease (myopathy) causing weakness, heart, and breathing problems.

is a rare tumor that grows in connective tissue and can recur.

is a rare, usually slow-growing brain tumor that affects infants.

is a rare, usually noncancerous brain tumor affecting infants and young children.

is a rare, aggressive cancer that usually starts in the abdomen.

is a type of childhood brain tumor that starts in the cerebellum.

is a very rare genetic disorder affecting cholesterol production and development.

is a rare smoking-related lung disease that causes inflammation and breathing problems.

is a bladder control problem where bladder and sphincter muscles miscoordinate.

is a group of severe brain disorders causing seizures and developmental delays.

is a rare genetic brain disorder causing seizures and developmental delays.

is a rare genetic condition causing seizures and developmental problems.

is a genetic brain disorder causing developmental delays and seizures.

is a rare genetic brain disorder causing seizures and developmental delays.

is a genetic brain disorder causing seizures and developmental problems.

is a rare genetic brain disorder causing seizures and developmental delay.

is a rare genetic condition causing seizures and developmental problems.