Spontaneous Partial Vanishing Cytomegalovirus Pseudotumour of Colon in an Immunocompetent Patient.

Cytomegalovirus (CMV) pseudotumour of the gastrointestinal tract, is a rare benign entity which is treated with antiviral medications and known to resolve spontaneously in a few cases. This is a case report of a 58-year-old man who presented with right lower quadrant abdominal pain. Contrast enhanced computerized tomography of abdomen and pelvis showed apple core lesion involving proximal transverse colon, ceacum, ascending colon, ileoceacal valve and terminal ileum. Synchronous carcinoma of colon was suspected. At laparotomy, there was growth palpable only in the proximal transverse colon. Histological findings of biopsy specimen revealed CMV pseudotumour. CMV pseudo tumour should be included in the differential diagnosis of apple core lesions of the colon even in immunocompetent adults. Endoscopy and biopsy are strongly recommended before surgery in colonic mass lesions to make a definitive diagnosis and to avoid unnecessary surgery.