Journal
FERTILITY AND STERILITY
Volume 95, Issue 5, Pages -Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.fertnstert.2010.11.051
Keywords
Uterus-like mass; endometriosis; metaplasia theory; histogenesis; subserosal tissue
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Objective: To report the first case of a subserosal uterus-like mass. Design: Case report. Setting: A community-based hospital. Patient(s): A 44-year-old nulliparous woman who complained of a left inguinal mass had a medical history that was notable for two features. One was left oophorectomy for a sliding hernia at 10 months of age; the other was endometriosis at the oophorectomy site at 26 years of age. Intervention(s): Tumorectomy. Main Outcome Measure(s): Not applicable. Result(s): Pathologic examination demonstrated that this subserosal mass mimicked a miniature uterus with a leiomyomatous lesion. Conclusion(s): As of September 2010, 23 cases of uterus-like mass had been reported. Three pathologic theories of uterus-like mass have been proposed: [1] congenital anomaly theory, [2] metaplasia theory, and [3] heterotopia. The pathogenesis of this rare entity is currently under debate. Most uterus-like masses have been connected to the genital organs (75.0%) and associated with endometriosis (50.0%). In the present case, the uterus-like mass developed at the surgical scar site of oophorectomy for a sliding hernia and a tumorectomy for endometriosis. We review the literature and discuss the theories regarding the histogenesis of uterus-like mass. (Fertil Steril (R) 2011; 95: 1788. e15-e19. (C) 2011 by American Society for Reproductive Medicine.)
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