Colonic pseudotumor caused by abdominal actinomycosis: A case report.

We report a case of abdominal actinomycosis, a chronic suppurative infection caused by bacteria of the genus Actinomyces, simulating colon cancer, and presenting with abdominal pain and leukocytosis. Computed tomography revealed a mass lesion with irregular contours, infiltrative aspect, with extension to omental fat and abdominal wall, in the transverse colon. A surgical intervention was performed due to the suspicious of a colonic tumor.