Abstract
A 41-year-old man was admitted to our hospital because of high fever and diarrhea. CT scan and MRI showed a monolocular mass in the retrorectal space. Sigmoidoscopy revealed a smooth hemispherical elevated lesion coverd with smooth mucosa in the rectosigmoid. Endoscopic ultrasonography showed a hypoechoic mass with hyperechoic parts, which was located in the outer submucosal layer. He was diagnosed as having a submucosal abscess of the rectosigmoid and transmucosal endoscopic drainage was chosen in terms of the location and the depth of the mass, and white pus was drained into the rectal lumen. His symptoms had disappeared after the drainage. Torulopsis glabrata was detected from the pus. A case of perirectal abscess, which was treated by endoscopic intraluminal drainage was presented.
