Castleman disease (CD) refers to a rare, nonclonal lymphoproliferative disorder characterized by abnormal overgrowth of lymph node tissue. Lymph nodes are small, bean-shaped structures...
Tangier Disease is a rare genetic disorder characterized by extremely low levels of high-density lipoprotein (HDL) cholesterol, also known as "good cholesterol." It is...
Kaposi's Sarcoma (KS) is a rare cancer that affects the skin, mucous membranes, and internal organs. It arises from endothelial cells lining blood or...
Rat Bite Fever (RBF), also known as Epidemic Arthritic Erythema, is a rare bacterial infection transmitted to humans by contact with rats (via bites, scratches,...