title: A case of ovarian dermoid cyst with malignant transformation perforated into the rectosigmoid colon and small intestine.
abstract: A 72-year-old female was admitted to hospital with diarrhea containing hair. The abdominal plain film showed teeth-like structures in the right lower quadrant. Barium enema and endoscopic examination were performed, and the results indicated a possible dermoid cyst perforated into the rectosigmoid colon and small intestine. The operation revealed a dermoid cyst of the right ovary perforated into the rectosigmoid colon and small intestine. Histopathologically, a dermoid cyst and in part well-differentiated squamous cell carcinoma invading the rectosigmoid and small intestine were demonstrated.
mesh_terms: D000368:Aged; D003884:Dermoid Cyst / Q000150:complications*; D005260:Female; D006801:Humans; D007416:Intestinal Perforation / Q000209:etiology*; D010051:Ovarian Neoplasms / Q000150:complications*; D012002:Rectal Diseases / Q000209:etiology*; D012422:Rupture, Spontaneous; D012810:Sigmoid Diseases / Q000209:etiology*