Mixed Large Cell Neuroendocrine Carcinoma and Endometrioid Adenocarcinoma: A Rare Case Report with Review of Literature.

We report the case of a 60-year-old female who presented with postmenopausal bleeding after she underwent investigations followed by a total abdominal hysterectomy with bilateral salpingo-oophorectomy and pelvic lymphadenectomy. A diagnosis of low-grade endometrioid adenocarcinoma admixed with large cell neuroendocrine carcinoma (NEC) was made based on the histomorphology and immunohistochemical profile. NEC of the endometrium is a rare and highly aggressive neoplasm requiring a multidisciplinary approach for its treatment. As treatment strategies are changing over time, preoperating imaging evaluation and histopathological examination with molecular characterization whenever possible are essential to follow, to offer the appropriate information to surgeons and/or oncologists for optimal management in these patients.