Disease A-Z Library

Rx Cancer (A – Z)

Browse plain-English disease and condition guides, including symptoms, causes, diagnosis, treatment options, prevention, and when to seek medical care.

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Diseases A-Z

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Disease A-Z Library

Burkitt Lymphoma

Burkitt lymphoma is a very fast-growing cancer of B lymphocytes, a type of white blood cell that normally helps your body fight infections. In this disease,...

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CYLD Cutaneous Syndrome

CYLD cutaneous syndrome (CCS) is a rare inherited condition in which people develop many small skin tumors—most often cylindromas, spiradenomas, and trichoepitheliomas—that start in the hair-follicle...

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Breast Angiosarcoma

Breast angiosarcoma is a rare, fast-growing cancer that starts in the cells lining blood vessels or lymph vessels within the breast or the breast skin. Because...

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Botryoid Rhabdomyosarcoma

Botryoid rhabdomyosarcoma (also called sarcoma botryoides) is a cancer that grows from very early cells that can become skeletal muscle. It is a special subtype of...

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Primary Osteosarcoma of Bone

Primary osteosarcoma is a cancer that starts in the bone itself. The tumor cells are abnormal bone-forming cells. They make a disorganized, immature bone matrix called...

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Osteogenic Sarcoma

Osteogenic sarcoma, also called osteosarcoma, is a cancer that starts in bone-forming cells. These cancer cells make immature bone (“osteoid”) inside the tumor. It most often...

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Osteosarcoma

Osteosarcoma is a cancer that starts in the bone-making cells. These cells normally build the hard mineral part of bone. In osteosarcoma they grow out of...

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Trichodiscomas

Trichodiscomas are small, harmless bumps that grow from hair-follicle tissue in the skin. Doctors call them hamartomas, which means an overgrowth of normal skin parts rather...

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Fibrofolliculomas

Fibrofolliculomas are small, smooth, skin-colored bumps that grow around a hair follicle. They are benign (not cancer). Each bump is usually 2–4 mm across, dome-shaped, and...

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