Category: L

Chronic pain and/or pressure felt in the anus or high in the rectum. The cause is unknown, but muscular tension or spasm, nerve irritation, or tendonitis may contribute. Some patients improve with injections of corticosteroid medications.  

An endogenous endorphin derived from proenkephalin. It decreases the secretion of vasopressin and fluid intake but increases feeding and opposes apoptosis.  

Possessing the power of attracting (positive leukotaxis) or repelling (negative leukotaxis) leukocytes.  

Possessing the power of attracting leukocytes.  

A variant of lymphoma in which malignant cells enter the blood stream and circulate.  

The loss of white blood cells from a unit of packed red cells by filtration of the blood before transfusion. White blood cells in red cell transfusions have been associated with immunosuppression in recipients. Leukoreduction typically lowers the white cell content of packed red cells from about 3 X 109 per unit of blood to…

The passage of leukocytes through the walls of the blood vessels.  

The absence of pigment in the skin.  

Anemia due to any condition that causes the bone marrow to be infiltrated and thus inactivated. This condition is marked by various manifestations, including anemia, the presence of immature red and white blood cells in the bloodstream due to cancerous deposits in the bones, osteosclerosis resulting from marble bone disease, or myelosclerosis. It is also…

Damage to the white matter of the brain, especially to myelin.