Acute erythroid leukemia is a rare and very aggressive blood cancer. It starts in the bone marrow from early red-blood-cell (erythroid) precursors. These cells ...

A vestibular schwannoma is a slow-growing, non-cancerous (benign) tumor that starts from Schwann cells. These cells normally “wrap” the balance and hearing ...

A neurinoma of the acoustic nerve is a benign (non-cancerous) tumor that grows from the Schwann cells that wrap and protect the vestibular (balance) part of ...

An acoustic schwannoma is a benign (non-cancerous) tumor that grows from Schwann cells—the cells that wrap and protect the vestibular (balance) part of the ...

A neurilemmoma, also called a schwannoma, is a benign (non-cancerous) tumor that grows from Schwann cells. Schwann cells wrap around nerves in the body and ...

Acoustic neuroma is a benign (non-cancerous) nerve sheath tumor that grows from Schwann cells. Schwann cells are the support cells that wrap around nerves and ...

Abdominal cystic lymphangioma is a rare, non-cancerous growth made of abnormal lymphatic vessels that form one or more fluid-filled cysts inside the abdomen. ...

Uveal lymphoma is a cancer of lymphocytes (a type of white blood cell) that grows inside the uvea of the eye. The uvea is the middle layer of the eyeball and ...

A trichofolliculoma is a benign (non-cancerous) tumor-like growth of a hair follicle. “Tricho” means hair, and “folliculoma” means a tumor or mass coming from ...

Trichoepithelioma is a benign (non-cancerous) skin tumor that grows from cells that normally form a hair follicle. Think of it as a tiny “copy” of a hair root ...

A thymoma is a growth (tumor) that starts in the cells that line the thymus. These cells are called thymic epithelial cells. In a thymoma, these cells grow ...

Periocular malignancies are cancers that start in the skin and glands of the eyelid and the skin right next to the eye. This area is small and delicate. The ...

A sphenoid wing meningioma is a tumor that starts in the thin membrane that lines the inside of the skull (the meninges) along the sphenoid wing, a bony ridge ...

Sinonasal undifferentiated carcinoma, or SNUC, is a very aggressive cancer that begins in the lining of the nose and the air-filled spaces around the nose ...

Rhabdomyosarcoma (RMS) is a cancer that starts from cells that are supposed to become skeletal muscle. Skeletal muscle is the muscle that moves our arms, legs, ...

Retinoblastoma is a cancer that starts in the retina, which is the thin light-sensing layer at the back of the eye. The tumor grows from very early retinal ...

A retinal astrocytic hamartoma is a benign (non-cancer) lump made of glial cells called astrocytes that sit in the top layers of the retina, especially the ...

Primary orbital liposarcoma is a rare cancer that starts inside the eye socket (the orbit) in the body’s fat tissue. The orbit is a tight, bony space that ...

Pott puffy tumour is not a cancer. It is a serious infection that causes a soft, puffy lump on the forehead. The lump forms because pus collects under the ...

A benign mixed tumor is a non-cancerous growth that most often starts in a salivary gland. Doctors also call it pleomorphic adenoma. “Benign” means it does not ...