Sqamous Cell Carcinoma in a Mature Cystic Teratoma

Abstract Mature cystic teratoma is a benign condition where malignant transformation is an extremely rare event. A case of squamous cell carcinoma developing in a mature cystic teratoma of the ovary presenting at an early stage is presented here. A 48-year-old perimenopausal woman, presented with the complaints of discomfort in the lower abdomen since 1 year and a large abdomino- pelvic mass on examination. Final histopathology was reported as squamous cell carcinoma developing in a mature cystic teratoma of the right ovary and section from the tissue adherent to bladder wall showing malignant infiltration into fibro-adipose tissue. Patient was assigned to squamous cell carcinoma of the ovary arising in a mature cystic teratoma, surgical stage IIB.