Korean J Gastrointest Endosc.  2007 Mar;34(3):156-160.

Rectal Polypoid Endometriosis Mimicking Malignant Rectal Tumor

Affiliations
  • 1Department of Internal Medicine, Institute of Digestive Disease and Nutrition, Korea University College of Medicine, Seoul, Korea. ytjeen@korea.ac.kr
  • 2Department of Internal Medicine, Kangwon National University College of Medicine, Chuncheon, Korea.

Abstract

Endometriosis is a disorder that presents as endometrial glands and stroma outside the uterine cavity and its musculature. It is a common gynecologic disease affecting approximately 15% of fertile women. However, polypoid endometriosis is rare. Our patient visited the hospital due to bowel habit changes and bloody stools. The colonoscopy revealed a large ulcerating polypoid mass in the rectum. Image studies including CT scan, MRI, and PET-CT suggested rectal cancer but the biopsy was negative for a malignancy. Finally, she was diagnosed with rectal polypoid endometriosis by a surgical rectal mass resection. We report a case of rectal polypoid endometriosis mimicking a rectal polypoid cancer.

Keyword

Rectal; Polypoid; Endometriosis; Colonoscopy
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