Synchronous MALT lymphoma of the colon and stomach and regression after eradication of and .

Mucosa-associated lymphoid tissue (MALT) is vital for host immunological surveillance against pathogens. MALT lymphoma, also known as extranodal marginal zone B cell lymphoma, is a non-Hodgkin's lymphoma subtype that predominantly arises in the gastrointestinal tract. Chronic infection is a common cause of gastric MALT lymphoma, although other infections are reported in association with extragastric MALT lymphomas.

Preoperative evaluation of the surgical patient.

A thorough preoperative evaluation to identify correctable medical abnormalities and understand the residual risk is mandatory for all patients undergoing any surgical procedure, including oral surgery. Routine preoperative evaluation will vary among patients, depending on age and general health. This article addresses the preoperative evaluation of surgical patients in general, and the evaluation for general anesthesia in the operating room.