Polypoid endometriosis of the ureter mimicking fibroepithelial polyps

Abstract

We present a case of polypoid endometriosis of the ureter that showed bilateral polypoid intraluminal masses in the lower part of the ureter mimicking ureteral fibroepithelial polyps, arising with a background of pelvic endometriosis and a history of gonadotropin releasing hormone (GnRH) therapy. Magnetic resonance imaging revealed the masses to have high signal intensity on T2-weighted imaging. The location and bilaterality of the polypoid intraluminal masses are considered useful points in the differential diagnosis of fibroepithelial polyps.

MR Imaging of Polypoid Endometriosis of the Ovary

“…[7][8][9][10] Each of these cases consisted of a mass with cystic component containing polypoidal areas that were hyperintense on T 2 -weighted image and demonstrated homogeneous enhancement on contrast study, as in our case. [7][8][9][10] Furthermore, Takeuchi and associates described linear areas of hypointensity contained in the polypoid areas of polypoid endometriosis adjacent to the uterus and rectum on T 2 -weighted image,ˆndings compatible with the site ofˆbrous tissue. 9 In the present case, as in that of Takeuchi's group, T 2 -weighted image revealed the cystic mass with solid component of hyperintense signal with hypointense rim and linear areas (Fig.…”

Huge polypoid endometriosis: report of a case and review of the literature

“…Furthermore, Othman et al [11] reported a case of polypoid endometriosis following gonadotrophin-releasing hormone (GnRH) agonist. They postulated that the lesion developed as a rebound phenomenon upon withdrawal of GnRH agonist-induced hormonal suppression [12]. In view of pathological characteristics, Parker et al defined polypoid endometriosis as ''an admixture of benign, but sometimes atypical, appearing endometriotic glands and benign-appearing endometriotic stroma.''…”

Polypoid endometriosis of the ovary mimicking ovarian carcinoma dissemination: A case report and literature review

“…Our literature review using PubMed identified approximately 40 cases of polypoid endometriosis . The mean age was 52.2 years (23–89 years of age).…”

“…Ascites was not noted except in one case. Of these 40 cases, MRI pictures in the reports were available in six cases whose predominant sites were the cervix, ovary, uterus, Pouch of Douglas, ureter and bladder (Table ) . Although the signal intensity of the mass on T1‐WI ranged from low to high, T2‐WI showed high signal intensity in four cases, and these masses were enhanced by gadolinium.…”

“…Our literature review using PubMed identified approximately 40 cases of polypoid endometriosis. [3][4][5][6][8][9][10] The mean age was 52.2 years (23-89 years of age). The lesion was most often found in the ovary (12 cases) but also in the colon (eight cases), uterus (seven cases), bladder/ureter (seven cases), pelvic peritoneum (seven cases), or others.…”