Histologic findings of the transurethral resected bladder tissue. (A) Endocervicosis showing round to branched endocervical-like glands with surrounding smooth muscle in the bladder (H + E × 40). (B) Surface mucinous epithelium delineated from urothelium (Southgate's mucicarmine x 40). (C) CK5/6 decorating basal cells of urothelium while surface mucinous epithelium is immunonegative (x 40). (D) Nuclear ER immunopositivity is noted in the surface mucinous epithelium and adjacent endocervicosis gland (x 40).
Cheah et al. Diagnostic Pathology 2011 6:56 doi:10.1186/1746-1596-6-56