Endocervicosis of the urinary bladder is a rare benign condition exclusively seen in women, usually of reproductive age. To the best of our knowledge there are only about twenty cases reported so far. It causes non-specific symptoms and is seen as a submucosal lesion on cystoscopy. On histological examination one finds endocervical glands embedded deep within the muscle layers. It can be confused with an adenocarcinoma of the bladder. Unless the correct diagnosis is made these patients can undergo potentially debilitating surgery. As demonstrated in our patient even symptomatic endocervicosis can be managed conservatively.
[Show abstract][Hide abstract] ABSTRACT: Endocervicosis of the urinary bladder is a very rare tumor-like benign lesion. In the present report, a case in a 34-year-old woman, who has a prior Caesarean section at the age of 30 and 2-years history of dysuria, is described. Transvaginal ultrasound, cystoscopy and magnetic resonance imaging demonstrated a solid mass in the posterior wall of the bladder. The mass was removed and histology revealed a haphazard proliferation of endocervical-type mucinous glands scattered through the muscularis propria of bladder wall. Immunohistochemical phenotype of these glands was compared with three normal uterine endocervices and two cases of well-differentiated mucinous adenocarcinoma of the uterine cervix. Endocervicosis glands displayed positive reaction for antibodies against estrogen receptor, progesterone receptor, CAM 5.2, cytokeratin 7, CA125, HBME-1 and carcinoembryonic antigen, which showed positivity in normal endocervices. On the other hand, only glands of well-differentiated mucinous adenocarcinoma expressed human gastric mucin and showed high proliferative index of Ki-67. These results supported the hypothesis of its Müllerian origin. Furthermore, diffuse distribution of estrogen and progesterone receptors, lack of human gastric mucin and low proliferative activity were distinct features for endocervicosis compared to well-differentiated mucinous adenocarcinoma.
Pathology International 07/2010; 60(7):528-32. DOI:10.1111/j.1440-1827.2010.02555.x · 1.69 Impact Factor
[Show abstract][Hide abstract] ABSTRACT: Endocervicosis in the urinary bladder is a rare benign condition. We present a case in a 37-year-old woman with classical clinical and pathological features of endocervicosis. The unusual observation of endocervical-like mucinous epithelium in continuity with the urothelium in addition to fully developed endocervicosis prompted immunohistochemical profiling of the case using antibodies to cytokeratins (AE1/AE3, CK19, CK7, CK5/6, CK20), HBME-1, estrogen receptor (ER) and progesterone receptor (PR) to assess the relationship of the surface mucinous and endocervicosis glandular epithelia. The surface mucinous epithelium, urothelium and endocervicosis glands were immunopositive for AE1/AE3, CK7 and CK19 while CK20 was only expressed by few urothelial umbrella cells. The surface mucinous epithelium was CK5/6 and HBME-1 immunonegative but showed presence of ER and PR. This was in contrast to the urothelium's expression of CK5/6 but not ER and PR. In comparison, endocervicosis glands expressed HBME-1, unlike the surface mucinous epithelium. The endocervicosis epithelium also demonstrated the expected presence of ER and PR and CK5/6 immunonegativity. The slightly differing immunohistochemical phenotypes of the surface mucinous and morphologically similar endocervicosis glandular epithelium is interesting and requires further clarification to its actual nature. The patient has remained well and without evidence of disease 18-months following transurethral resection of the lesion.
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