Anatomic Pathology Abstracts, 1/16
January 2016—Uterine leiomyosarcomas are rare malignant tumors with a poor prognosis, while leiomyomas are common benign tumors unrelated to their malignant counterparts. Diagnostic features commonly present in leiomyosarcoma include cytologic atypia, high mitotic index, and a sarcoma-specific geographic cell death designated as tumor cell necrosis (TCN).