title: Squamous cell carcinoma in situ arising in mature cystic teratoma of the ovary: a case report.
abstract: BACKGROUND
  Malignant transformation is a rare complication of mature cystic teratoma with squamous cell carcinoma being the most common type. We report a new case of squamous cell carcinoma in situ.
  
  
  METHODS
  A 62 year old woman was admitted for an abdomino-pelvic mass and she underwent a left salpingo-oophorectomy. The histopathologic analysis revealed a squamous cell carcinoma in situ arising in mature cystic teratoma of the ovary. Then, she underwent a total hysterectomy, contralateral salpingo-oophorectomy and omentectomy without adjuvant treatment.
  
  
  CONCLUSIONS
  Optimal cytoreduction has been associated with a statistically significant improvement in survival for malignant transformation of mature cystic teratoma.
authors: Department of Medical Oncology, National Institute of Oncology, Rabat, Morocco. zora-83@hotmail.com.
authors: Fatima A
authors: FA
authors: Zakkouri
authors: Saloua
authors: S
authors: Ouaouch
authors: Saber
authors: S
authors: Boutayeb
authors: Mouna
authors: M
authors: Rimani
authors: Lamiae
authors: L
authors: Gamra
authors: Hind
authors: H
authors: Mrabti
authors: Hassan
authors: H
authors: Errihani