Özet:

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 chronic irritation such as renal stone, infection and inflammation. We report a case of a young male patient who was incidentally diagnosed with right pelvic-ureteric junction obstruction during evaluation for Hodgkin lymphoma. After completion of chemotherapy for Hodgkin lymphoma, the patient underwent laparoscopic Anderson-Hynes pyeloplasty. The resected adynamic segment part of the pelvic-ureteric junction was sent for histopathological examination, which showed high-grade urothelial carcinoma with extensive squamous metaplasia. The patient was further managed with laparoscopic radical nephroureterectomy and lymphadenectomy. Our report is the first case of an incidental histologically detected urothelial carcinoma in a young patient without any radiological mass lesion.

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