Seromucinous carcinoma of ovary - A rare entity

Ovarian epithelial tumours are common tumors of female genital tract and they account for vast majority of female ovarian neoplasms. ovarian seromucinous carcinomas (OSMC) are rare ovarian tumours containing serous and endocervical mucinous type cells. In 2020, World Health Organization Classification of Female Genital Tumors recategorized seromucinous ovarian carcinomas as ovarian endometrioid carcinoma with mucinous differentiation. Most OSMC present in stage I or II and have a favourable prognosis. We present the case of a 30-year-old female who presented with complaints of lower abdominal pain and abdominal distension. Contrast enhanced computed tomography of abdomen suggested a left sided malignant adnexal mass following which Left sided salpingo-oophorectomy was performed and histopathological examination and immunohistochemistry of specimen was done and a diagnosis of left ovarian seromucinous carcinoma was rendered.