Abstract
A 46-year-old man was admitted to the hospital because of anal bleeding. Digital examination of the rectum revealed an extramural mass in the posterior wall of the rectum. Barium enema and colonoscopic examinations demonstrated extrarectal compression for the posterior side in the lower rectum. These examinations revealed the anal bleeding to have been caused by an internal hemorrhoid. CT scans, transrectal endoscopic ultrasonography and magnetic resonance imaging (MRI) showed a well marginated cystic mass with a smooth surface in the presacral space. The mass was removed by a parasacral approach. Macroscopically, the mass was a cyst containing yellowish granular marterial and no tumorous lesion was seen in the wall. Microscopically, the cyst was composed of fibrous tissue and stratified squamous epithelium without appendages. Based on these findings, the lesion was diagnosed as an epidermoid cyst.
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Schedule a callMore From: The journal of the Japanese Practical Surgeon Society
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