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.
© 2021 The Authors. Clinical Case Reports published by John Wiley & Sons Ltd.