Malignant melanoma arising in mature teratoma with pugnacious spread: A case report

Of all ovarian neoplasms, mature cystic teratomas make up between 10–20%. Malignant transformation accounts for just 0.1-2 percent of cases of adult teratoma. Malignant melanoma is one of the rarest metamorphoses. Here, we describe a postmenopausal woman who complained of abdominal pain. Upon examination, it was discovered that she had an abdominally metastasized mature dermoid cyst that had ruptured. Following an exploratory laparotomy and staging procedures, she had a total abdominal hysterectomy and bilateral salpingo-oophorectomy with removal of melanotic deposits from the pouch of doughlas, bladder peritoneum, mesentric, and omentum, as well as the small and large bowel serosa. Only roughly 45 cases of malignant melanoma originating in mature cystic teratomas in the ovary have been documented since 1901.