Yuan-Jiao Liang1, Qun Hao, Yuan-Zhe Wu, Bo Wu. 1. Department of Obstetrics and Gynecology, Jinling Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu 210002, People's Republic of China. yuanjiao1965@126.com
Abstract
OBJECTIVE: To describe a rare extrauterine mass of an unknown origin that was composed of smooth muscle with a central cavity lined by endometrium, which resembled a uterus. DESIGN: Case report. SETTING: Academic teaching hospital. PATIENT(S): A 17-year-old girl with severe dysmenorrhea was found to have a uterus-like mass composed of smooth muscle and lined by endometrium in the left broad ligament. INTERVENTION(S): Abdominal surgery. RESULT(S): The mass was successfully removed surgically, and her dysmenorrhea resolved. Histopathological examination revealed that the uterus-like mass was composed of smooth muscle with a cavity lined by endometrial glands and stroma. CONCLUSION(S): The histogenesis of a uterus-like mass is theorized to be a Müllerian system anomaly, metaplastic change, and/or heterotopia. We believe metaplasia is the most likely cause in this case. Alhough rare, it should be considered in the differential diagnosis of dysmenorrhea of uncertain etiology. Crown Copyright 2010. Published by Elsevier Inc. All rights reserved.
OBJECTIVE: To describe a rare extrauterine mass of an unknown origin that was composed of smooth muscle with a central cavity lined by endometrium, which resembled a uterus. DESIGN: Case report. SETTING: Academic teaching hospital. PATIENT(S): A 17-year-old girl with severe dysmenorrhea was found to have a uterus-like mass composed of smooth muscle and lined by endometrium in the left broad ligament. INTERVENTION(S): Abdominal surgery. RESULT(S): The mass was successfully removed surgically, and her dysmenorrhea resolved. Histopathological examination revealed that the uterus-like mass was composed of smooth muscle with a cavity lined by endometrial glands and stroma. CONCLUSION(S): The histogenesis of a uterus-like mass is theorized to be a Müllerian system anomaly, metaplastic change, and/or heterotopia. We believe metaplasia is the most likely cause in this case. Alhough rare, it should be considered in the differential diagnosis of dysmenorrhea of uncertain etiology. Crown Copyright 2010. Published by Elsevier Inc. All rights reserved.
Authors: Filomena M Carvalho; Jesus Paula Carvalho; Ricardo Mendes Alves Pereira; Benito Pio Vitório Ceccato; Rafael Lacordia; Edmund Chada Baracat Journal: Clin Med Insights Case Rep Date: 2012-05-21