cases, lymph node Week 193: Case 6 April 26, 2023 pathadmin 1. Presented by Theresa Chan, M.D. and prepared by Maryam Farinola M.D.57-year-old male with elevated PSA and this pelvic lymph node. /images/histiocytosis assoc with hip prosthesis 1.jpg/images/histiocytosis assoc with hip prosthesis 2.jpg/images/histiocytosis assoc with hip prosthesis 3.jpg/images/histiocytosis assoc with hip prosthesis 4.jpgMetastatic signet ring cell carcinoma of the prostateSinus histocytosis with massive lymphadenopathy (Rosai-Dorfman disease)Langerhans' cell histiocytosisBenign sinus histiocytosis Loading...