title: Ovarian dermoid cyst with malignant transformation and rupture of the capsule associated with chemical peritonitis: a case report and literature review.
abstract: Malignant transformation of ovarian dermoid cysts is rare and spontaneous rupture provoking chemical peritonitis is even rarer. Laparotomy in a 75-year-old Brazilian woman with abdominal pain and signs of peritoneal irritation revealed a voluminous right ovarian cyst with rupture of the capsule, an abundant quantity of fatty material in the abdominal cavity, and signs of peritonitis. Total abdominal hysterectomy and bilateral salpingo-oophorectomy with partial omentectomy were performed. Histopathology confirmed a dermoid cyst with a well-differentiated area of epidermoid carcinoma. The patient refused additional treatment and is currently in the seventh year of follow-up with no signs of recurrence. Rupture of a dermoid cyst of the ovary resulting in chemical peritonitis is very rare and may be associated with malignant transformation.
authors.affiliation: Department of Gynecology, Federal University of Piauí, Teresina, Piauí, Brazil. beneditoborges@globo.com
authors.forename: B B
authors.initials: BB
authors.lastname: da Silva
authors.forename: A R
authors.initials: AR
authors.lastname: dos Santos
authors.forename: P V
authors.initials: PV
authors.lastname: Lopes-Costa
authors.forename: E C
authors.initials: EC
authors.lastname: Sousa-Júnior
authors.forename: M V
authors.initials: MV
authors.lastname: Correa-Lima
authors.forename: C G
authors.initials: CG
authors.lastname: Pires
mesh_terms: D000368:Aged; D002294:Carcinoma, Squamous Cell / Q000150:complications / Q000473:pathology*; D003884:Dermoid Cyst / Q000150:complications / Q000473:pathology*; D005260:Female; D006801:Humans; D009378:Neoplasms, Multiple Primary / Q000150:complications / Q000473:pathology*; D010051:Ovarian Neoplasms / Q000150:complications / Q000473:pathology*; D010538:Peritonitis / Q000209:etiology*; D012422:Rupture, Spontaneous