Collision Tumor of Ovary: Invasive Serous Papillary Cystadenocarcinoma and Mature Cystic Teratoma

Collision tumour is defined as coexistence of two dintinct tumours in the same organ without any histological intermixing. Collision tumors involving ovaries are extremely rare. In this paper, we present a case of ovarian collision tumor composed of mature cystic teratoma with invasive serous papillary cystadenocarcinoma in a 83-year-old woman who had abdominal pain and abnormal uterine bleeding.

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