title: Intrauterine hydrosalpinx.
abstract: An unusual case of intrauterine hydrosalpinx is reported. The tube was greatly dilated and formed a large intramyometrial cyst. It was thought to be a leiomyoma with cystic degeneration but was shown to be a true cyst lined by tube-type epithelium. Because it simulated a neoplasm owing to its large size, the term " endosalpingoma " is proposed. The differential diagnosis with myometrial cysts is discussed.
mesh_terms: D000328:Adult; D003560:Cysts / Q000175:diagnosis* / Q000473:pathology; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007889:Leiomyoma / Q000175:diagnosis; D014591:Uterine Diseases / Q000175:diagnosis* / Q000473:pathology; D014594:Uterine Neoplasms / Q000175:diagnosis