Is it just an obstructive pyelonephritis?

Abstract

Abstract Pyelocaliceal obstruction is a diagnostic challenge, and it is important to identify the obstruction cause. Some patients present extra‐renal compressive masses that need further imagiologic investigation and a biopsy, to establish the diagnosis.

Keywords

• follicular lymphoma
• lymphadenopathy
• lymphoproliferative disorder
• urinary obstruction