A WHO Grade III Oligodendroglial Tumor
A WHO grade III oligodendroglial tumor is a fast-growing brain tumor that starts from oligodendrocytes, the cells that make the myelin (insulation) around nerve fibers. In...
Read articleBrowse plain-English disease and condition guides, including symptoms, causes, diagnosis, treatment options, prevention, and when to seek medical care.
A WHO grade III oligodendroglial tumor is a fast-growing brain tumor that starts from oligodendrocytes, the cells that make the myelin (insulation) around nerve fibers. In...
Read articleAbdominal cystic lymphangioma is a rare, non-cancerous growth made of abnormal lymphatic vessels that form one or more fluid-filled cysts inside the abdomen. The lymphatic system...
Read articleAbducent nucleus cancer, also known as sixth cranial nerve nucleus cancer, is a rare condition where abnormal cells grow uncontrollably in the abducent nucleus, a part...
Read articleAberrant Basal Cell Carcinoma (BCC) is a type of skin cancer that typically originates in the basal cells of the skin’s outer layer. In this article,...
Read article
Abrikossoff’s tumor, also known as granular cell tumor (GCT), is a rare type of soft tissue tumor that can develop in various parts of the body....
Read articleAbsolute monocytopenia means the number of monocytes in the blood is abnormally low, specifically below about 0.2 × 10⁹/L (or <200 cells/µL). Monocytes are a critical...
Read articleAbsolute monocytosis means your blood has more monocytes than the normal upper limit when counted as an absolute number, not just a percentage. Monocytes are a...
Read articleAcinar Cell Carcinoma (ACC) is a rare type of cancer that originates in the acinar cells of the pancreas. While it may sound complicated, we’re here...
Read articleAckerman tumor, also known as Ackerman syndrome or Ackerman’s tumor, is a rare medical condition that primarily affects the bones and soft tissues of the body....
Read articleAcoustic neuroma refers to a benign tumor that arises from the Schwann cells lining the vestibular nerve. This nerve is responsible for transmitting sound and assisting...
Read articleAn 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 eighth cranial...
Read articleAcquired alpha-thalassaemia in myeloid neoplasms means a person who has a disease of the bone marrow (a blood-forming cancer or pre-cancer) suddenly develops a new problem...
Read articleBone Marrow Failure Syndrome Type 1 (BMFS1) is a rare, autosomal-dominant inherited disorder where the bone marrow slowly stops making enough healthy blood cells. People can...
Read articleAutoimmune thrombocytopenic purpura (ITP)—now most often called immune thrombocytopenia—is a bleeding condition caused by the immune system mistakenly attacking platelets, the blood cells that help stop...
Read articleMetaphyseal dysplasia is an umbrella term for rare genetic bone conditions where the metaphyses—the flared ends of long bones near the joints—develop abnormally. On X-rays, the...
Read articleRAS-associated autoimmune leukoproliferative disorder (RALD) is a rare immune-system disorder caused by somatic (acquired) “gain-of-function” mutations in the genes NRAS or KRAS inside blood-forming cells. These...
Read articleAutoimmune lymphoproliferative syndrome type 4 is a rare immune system problem. In this condition, white blood cells do not switch off and die when they should....
Read articleAutoimmune lymphoproliferative syndrome caused by mutation in CASP8/Caspase-8 deficiency is a very rare, inherited problem of the immune system where a gene called CASP8 does not...
Read articleAutoimmune Lymphoproliferative Syndrome (ALPS) is a rare disorder in which a safety switch that tells certain immune cells (T lymphocytes) to die when they’re no longer...
Read articleHereditary flat adenoma syndrome (HFAS)” is an older name for a milder form of familial adenomatous polyposis (FAP). Today, most experts call it attenuated familial adenomatous...
Read articleAttenuated adenomatous polyposis coli” is the milder form of familial adenomatous polyposis (FAP). It happens when a person is born with a harmful change (a “pathogenic...
Read articleAttenuated familial adenomatous polyposis (AFAP) is an inherited condition that causes a person to grow fewer colon and rectal polyps than the classic form of FAP—usually...
Read articleGiant cell chondrodysplasia, in today’s language, means a bone or jaw growth problem where the tissue shows many “giant cells” under the microscope and the person...
Read articleMyelocerebellar disorder is an older name that doctors used for a rare, inherited condition now usually called ataxia-pancytopenia (AP) syndrome caused by changes in the SAMD9L...
Read articleInherited bone-marrow failure means a person is born with a change in a gene that weakens the bone marrow. The bone marrow is the soft center...
Read articleAtaxia-Pancytopenia Syndrome (ATXPC) is a rare, inherited disorder caused most often by changes (variants) in a gene called SAMD9L. “Ataxia” means problems with balance and coordination...
Read articleAstroblastoma is a very rare brain tumor. It grows from glial cells (the support cells of the brain). It is usually found in the cerebral hemispheres...
Read articleMyelodysplasia are disorders of the bone marrow—the soft “factory” inside bones that makes blood cells. In MDS, early blood-forming stem cells acquire DNA changes. Because of these...
Read articleVermiform appendix adenocarcinoma is a cancer that starts in the lining cells of the appendix, a thin, finger-like pouch attached to the first part of the...
Read articleAppendiceal adenocarcinoma is a cancer that begins in the inner lining of the appendix. The lining is made of gland-forming cells that can make mucus (a...
Read articleAppendix adenocarcinoma is a cancer that begins in the gland-forming cells that line the inside of the appendix (a small, finger-like pouch at the start of...
Read articleAngioma serpiginosum is a benign skin condition in which tiny surface blood vessels (capillaries) in the upper layer of the skin become abnormally widened and clustered....
Read article