69 y.o. F, transurethral resection of bladder tumor in the trigone. What is the diagnosis? @MGHPathology @MGBpathology

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@MGHPathology @MGBpathology Inverted urothelial papilloma - Most common locations: bladder neck and trigone - Endophytic, complex anastomosing urothelial cords of normal thickness - Peripheral pslisading, central streaming - No cytological atypia, although focal degenerative atypia may be present #GUPath

@TingZhaoPathdoc @MGHPathology @MGBpathology Inverted papilloma , palisading check, streaming check , thin anastomosing front check 😬

@TingZhaoPathdoc @MGHPathology @MGBpathology Inverted urothelial papilloma vs florid von brunn nest?

@TingZhaoPathdoc @MGHPathology @MGBpathology ?inverted papilloma

@TingZhaoPathdoc @MGHPathology @MGBpathology sciqst.com.