Collecting duct carcinoma with long survival treated by partial nephrectomy

A case is reported of collecting duct carcinoma of the left kidney treated with partial nephrectomy. A 57-year-old woman presented for evaluation of t he left renal mass, which was detected by screening ultrasonography. A comp uted tomography scan and magnetic resonance imaging showed a solid mass at the upper pole of the left kidney. The renal tumor biopsy revealed a low-gr ade renal cell carcinoma or a tubulopapillary adenoma. Subsequently, left p artial nephrectomy was performed. Microscopically, the tumor showed tubulop apillary proliferation with a fibrous capsule. Histochemically, the tumor c ells reacted with lectins or antibodies against the collecting duct. Twenty -four months after partial nephrectomy, the patient is alive and has no dis tant metastatic lesions. We review the literature on collecting duct carcin oma, in addition to the case of partial nephrectomy.