論文の公開元へA mixed Müllerian cystadenoma presenting as a paraurethral tumor.
概要
A mixed Müllerian cystadenoma presenting as a paraurethral tumor was diagnosed after paraurethral tumor excision in a 24-year-old woman. She became aware of the tumor after an external injury at 17 years of age, with no history of sexual intercourse. Seven years after the injury, she first visited the gynecologist, who diagnosed a paraurethral tumor. Then, 15 months later, the paraurethral tumor was excised. The tumor was histologically diagnosed as a mixed Müllerian cystadenoma.
Paraurethral cysts are rare benign lesions usually arising in adult women with a history of vaginal delivery. Since the cysts usually have no communication with the urethra and may bulge into the vagina or vulva, patients sometimes present to gynecologists. Clinically identified paraurethral tumors are mixed conditions including cases that are both congenital/acquired in etiology and non-neoplastic/neoplastic in nature. Although there are very few comprehensive studies of the pathological features of paraurethral cysts (Das, 1981), neoplastic cysts seem to be very rare, with an exceptional case report of an adenocarcinoma arising in a paraurethral cyst (Massari et al., 2014).
A case of a paraurethral cyst in a young adult female without a history of sexual intercourse is reported. The histological findings of the cyst resembled those of a mixed Müllerian cystadenoma of the ovary, and the cystic lesion was considered to be neoplastic in nature. This is the first case of mixed Müllerian cystadenoma of the paraurethral region. Its histogenesis is discussed, referring to its much more common ovarian and pelvic counterparts.
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