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Artículo Tomo 70, Número. 3, Abril 2017

Archivos Españoles de Urología

Urinary tract lymphoepithelial carcinoma. Report of two cases and bibliographic review.

Authors: Sebastián Valverde Martínez, Waleska Salcedo Mercado, Isabel Rodríguez Cruz, Sara Belén Prieto Nogal, Mario Martín Hernández y Luis Miguel Gómez Tejeda.

Arch. Esp. Urol. 2017; 70 (3): 361-366

Vol. 70, Number. 3, April 2017

OBJECTIVE: We report two cases of patients diagnosed with lymphoepithelioma-like carcinomas of the urinary tract. We review the literature of this rare entity. The objective is to clarify the clinical and therapeutic characteristics.

METHODS: We present a retrospective review of medical records of two patients diagnosed with lymphoepitheliomalike carcinomas, one in the renal pelvis and the other in the bladder. We review the epidemiology, diagnosis and therapeutic alternatives.

RESULTS: Case 1: A 74-year-old women with past medical history of left radical nephrectomy and retroperitoneal lymphadenectomy six years before for renal pelvis carcinoma type pure lymphoepithelioma-like, stage pT4R0pN1cM0. She received adjuvant chemotherapy with Cisplatin and Gemcitabine. Five years later, she presented tumor recurrence in the left ureteral meatus, this lesion was resected. The pathology reported a high-grade urothelial carcinoma with marked lymphoid component, stage pT1. At follow-up, one year after the last recurrence, the patient was asymptomatic. In tomography control, no local or distant recurrences were objectified. Case 2: A 82-year-old men with diagnosis of muscleinvasive bladder cancer. The tumor caused right obstructive uropathy without extracapsular, regional or remote extension. We performed a radical cystoprostatectomy with bilateral pelvic lymphadenectomy and urinary diversión type cutaneous transureterostomy. The pathology reported a urothelial bladder carcinoma type mixed lymphoepithelioma-like, stage pT4aR1pN2cM0. At six months follow-up, the patient had liver and spleen lesions and retroperitoneal adenopathic nodes, all suggestive of metastases. He is currently receiving symptomatic treatment of their disease.

CONCLUSIONS: We emphasize the clinical importance involved in the diagnosis of this entity. The diagnosis influence the aggressiveness of treatment and disease-specific survival. Therefore, concomitant transitional cell carcinoma defines the prognosis. The role of immunohistochemical staining is fundamental, allowing us to confirm the presence of the epithelial component.


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