A case of endometrial stromal sarcoma with curvilinear calcification

Although many histopathological, clinical, and imaging findings of ESS have been described, intense calcifications have not been reported previously. A 54-year-old female was admitted with vaginal bleeding and abdominal pain. Gynecologic examination revealed a huge, firm pelvic mass extending up to the epigastrium. Transabdominal ultrasonography and computed tomography demonstrated a well-demarcated uterine mass containing heterogeneous solid and cystic areas and a centric curvilinear calcification. Histopathological diagnosis was established as undifferentiated high-grade endometrial stromal sarcoma. Endometrial stromal sarcomas should be considered in the differential diagnosis of uterine masses containing curvilinear calcifications.