Title: A 64 -year-old male with diffuse renal large B-cell non-Hodgkin lymphoma:A rare Case Report.Hasan Haydar a,+ ,Mouhammed Sleiaya, Hadi Alabdullaha , Rouba Al-alloush a, Nour Al_alloush a , Mohamad Yasin Lutfi b, Simon Youssefc, Suaad Hamshod.a Faculty of Medicine, Hama University, Hama, Syrian Arab Republic.b Hama National Hospital,Urology Department, Hama, Syrian Arab Republic.c Hama National Hospital,pathology Department, Hama, Syrian Arab Republic.d Rheumatology department Faculty of medicine, Damascus University, Damascus ,Syrian Arab Republic.*Corresponding author: Hasan Haydar, Faculty of Medicine, Hama University, Hama, Syrian Arab Republic. email: hasanhaydar458@gmail.com+ Hasan Haydar ,Mouhammed Sleiay, Rouba Al-alloush , Nour Al_alloush, Mohamad Yasin Lutfi , Simon Youssef , Suaad Hamsho are co-first authors. All contributed equally in this paper.Emails & ORCID:Hasan Haydar: hasanhaydar458@gmail.comMouhammed Sleiay:abdmouh1234mouhmouh@gmail.comORCID: 0009-0003-8887-0739Hadi Alabdullah :dr.alabdullah.md@gmail.comRouba Al-alloush : rouba2002alloush@gmail.comNour Al_alloush: nour2005alloush@gmail.comMohamad Yasin Lutfi: Doctor85yasen@gmail.comSimon Youssef:simon.youssef.1978@gmail.comSuaad Hamsho,soha.hamsho3@gmail.com