%0 Case Reports
%T Characteristics of Epithelioid Trophoblastic Tumor: Endoscopic and Magnetic Resonance Imaging Findings.
%A Idegami D
%A Amano T
%A Torii H
%A Tsuji S
%A Urabe M
%A Murakami T
%J Case Rep Oncol
%V 17
%N 1
%D 2024 Jan-Dec
%M 39015636
暂无%R 10.1159/000539428
%X <B>UNASSIGNED: </B>Epithelioid endothelial tumor (ETT) is an extremely rare tumor that typically occurs in women of reproductive age. The diagnosis tends to be delayed because it often necessitates a total hysterectomy. Therefore, it is important to understand ETT macroscopic and imaging findings. Here, we report a case of ETT with detailed macroscopic and imaging findings.<BR><B>UNASSIGNED: </B>A 39-year-old woman with positive pregnancy test results was admitted to a nearby hospital. No gestational sac was found in the uterus, and magnetic resonance imaging (MRI) revealed a cystic mass of approximately 7 cm that extended continuously from the anterior wall of the lower uterine segment into the pelvic cavity. She underwent laparoscopic and hysteroscopic surgeries for a ruptured cervical pregnancy. Pathology of the specimens obtained from this surgery did not allow for the diagnosis of ETT. Two months after the surgery, as the serum human chorionic gonadotropin β subunit (β-HCG) level did not decrease, she was diagnosed with low-grade gestational trophoblastic neoplasia, leading to the administration of chemotherapy. After three regimens of chemotherapy over 9 months, her β-HCG level decreased but did not reach normal levels. Ultimately, a total hysterectomy was performed. The pathological diagnosis was mixed ETT and choriocarcinoma. A literature review revealed several cases similar to ours.<BR><B>UNASSIGNED: </B>ETT in the lower uterus often perforates the myometrium and forms cystic lesions in the retroperitoneal space or subserosa. The MRI and laparoscopic/hysteroscopic findings in this case may have contributed to the early diagnosis of ETT.