A type of inflammatory disease of the large intestine (colon). The name derives from the microscopic observations of biopsies of the colon. What is seen in the microscope view of colon tissue is an increased number of inflammatory white blood cells (lymphocytes) among the lining cells of the colon. The elderly are most commonly affected by lymphocytic colitis, and symptoms of the condition typically include a chronic, watery diarrhea without the presence of blood. Abdominal pain and cramping may also occur in people with lymphocytic colitis.
The cause of lymphocytic colitis has not yet been determined, but some doctors believe that an infection or an autoimmune process may be involved in the development of the condition. Since the colon (large intestine) appears normal under colonoscopy, this condition has been referred to as “microscopic colitis” because the characteristic abnormalities are only apparent when biopsies of the colon are examined microscopically.
Having too many lymphocytes. Lymphocytosis may be a marker that infection or disease is present.
- Lymphogranuloma venereum (LGV)
Abbreviated LGV. An uncommon genital or anorectal (affecting the anus and/or rectum) infection that is caused by a specific type of Chlamydia trachomatis. Patients typically have tender glands (lymph nodes) in the groin and may recently have had a genital ulcer that resolved on its own. Other patients, in particular those with HIV infection, may […]
Referring to lymphocytes, a type of white blood cell, or to tissue in which lymphocytes develop. Lymphoid tissue is full of lymphocytes, such as a lymph node.
- Lymphoid tissue
The part of the body’s immune system that is important for the immune response and helps protect it from infection and foreign bodies. Lymphoid tissue is present throughout the body and includes the lymph nodes, spleen, tonsils, adenoids, and other structures.
A tumor of the lymphoid tissue. The major types of lymphoma are Hodgkin’s disease and non-Hodgkin’s lymphoma (NHL). NHL can in turn be divided into low-grade, intermediate-grade, high-grade, and miscellaneous lymphomas. The course of NHL varies greatly, from indolent to rapidly fatal. Treatment options include chemo and radiation therapy.