bladder, cases Week 452: Case 4 April 26, 2023 pathadmin 1. Presented by Jonathan Epstein, M.D. and prepared by Rui Zheng, M.D., Ph.D.An 87 year old female with no past known significant medical history was noted to have a bladder mass. Though the tumor had an epithelioid pattern with some nesting, all cytokeratin markers were negative and the case was sent in for consultation.images/1alex/09272010case4image1.jpgimages/1alex/09272010case4image2.jpgimages/1alex/09272010case4image3.jpgimages/1alex/09272010case4image4.jpgSmall cell carcinomaPoorly differentiated urothelial carcinomaLymphoepithelial-like carcinomaLarge cell lymphoma Loading...