Urothelial carcinomas of the renal pelvis are rare malignancies presenting commonly in older individuals and are characterised by flank pain,haematuria and palpable mass. Squamous differentiation is a common urothelial carcinoma and is usually associated with factors causing chronicirritation such as renal stone, infection and inflammation. We report a case of a young male patient who was incidentally diagnosed with rightpelvic-ureteric junction obstruction during evaluation for Hodgkin lymphoma. After completion of chemotherapy for Hodgkin lymphoma, thepatient underwent laparoscopic Anderson-Hynes pyeloplasty. The resected adynamic segment part of the pelvic-ureteric junction was sent forhistopathological examination, which showed high-grade urothelial carcinoma with extensive squamous metaplasia. The patient was furthermanaged with laparoscopic radical nephroureterectomy and lymphadenectomy. Our report is the first case of an incidental histologically detectedurothelial carcinoma in a young patient without any radiological mass lesion.
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