Mantle cell lymphoma presenting as a pelvi-ureteric junction obstruction: a case report.

INTRODUCTION: Mantle cell lymphoma is one of the several subtypes of non-Hodgkin's lymphoma. Mantle cell lymphoma is the rarest of the subtypes, accounting for about 6% of all non-Hodgkin's lymphoma cases in the United States and Europe. Lymphoid neoplasms of the urinary tract and male genital organs are relatively rare, accounting for less than 5% of extranodal lymphomas. We present a rare case of mantle cell lymphoma infiltrating the ureter causing pelvi-ureteric junction obstruction on tissue diagnosis. CASE PRESENTATION: A 78-year-old Caucasian woman was referred to our department with right flank pain, pyrexia and features of a urinary tract infection. A nephrostogram revealed a grossly distended right pelvicalyceal system in a pelvi-ureteric junction obstruction pattern. She underwent an elective pyeloplasty after her acute management and the results of histological examination revealed mantle cell lymphoma. CONCLUSION: We describe a rare presentation of mantle cell lymphoma as a pelvi-ureteric junction obstruction. To the best of our knowledge, there has not been any previously published report of the above finding. Our patient had a history of a previous lymphoma but the aim of this manuscript is to highlight a possible presentation rather than determining whether the mantle cell lymphoma was de novo or a transformation from her previous splenic lymphoma with villous lymphocytes.

Significant upper urinary tract hematuria as a rare complication of high-pressure chronic retention of urine following decompression: a case report.

INTRODUCTION: Hematuria has been described following bladder drainage in 2% to 16% of high-pressure chronic urinary retention treatments by decompression and is generally self-limiting. We describe a case of significant bilateral upper urinary tract hematuria following drainage of high-pressure chronic retention. To the best of our knowledge, the only similar case reported in the literature was in 1944. CASE PRESENTATION: An 82-year-old Caucasian man was referred to our department with nocturnal enuresis and a palpable bladder. He was catheterized, produced a residual volume of 2900mL, and ended up becoming oliguric. Following investigations, he had bilateral nephrostomies. He was discharged 18 days after presentation. CONCLUSIONS: Clinicians should keep in mind the presentation discussed in this case report to be able to swiftly manage this extremely rare complication of decompression in patients with high-pressure chronic retention.