Metástasis tiroidea de un carcinoma de células renales. Hallazgos citológicos e histológicos / Renal cell carcinoma metastatic to the thyroid. Cytological and histological findings

Introducción: El carcinoma de células renales (CCR)tipo célula clara es un tumor maligno que puede metastatizaren múltiples localizaciones incluido el tiroides, con unabaja incidencia. Presenta una citología característica quepermite un rápido diagnóstico y tratamiento. Caso clínico:Presentamos el caso de una metástasis tiroidea por un CCRde células claras en un paciente de 67 años a los 12 años deldiagnóstico del tumor primario en el riñón derecho (AU)

Introduction: Clear cell type renal cell carcinoma(RCC) is a malignant tumor that can metastasize to manylocations –including the thyroid–, with a low incidence.Cytological features are characteristic enough to allow a fastdiagnosis and treatment. Case report:We report the case ofa thyroid metastasis of clear cell RCC in a 67-year oldpatient, 12 years after the diagnosis of the primary tumourin right kidney (AU)

Hamartoma quistico de pelvis renal, un hallazgo infrecuente / Cystic hamartoma of the renal pelvis: unfrequent finding

OBJETIVO: El hamartoma quístico de pelvis renal es un tumor benigno muy infrecuente. Presentamos un caso haciendo hincapié en la histología y revisamos la literatura.METODOS: Se trata de una paciente de mediana edad, con hallazgo incidental de masa renal que ocupa pelvis.RESULTADOS: Se practica nefrectomía radical con resultado histológico de hamartoma quístico de pelvis renal.CONCLUSIÓN: Se trata de un tumor renal quístico con criterios histológicos e inmunohistoquimicos bien definidos y que probablemente no comporta peligro para la vida del paciente. (AU)

[Cystic hamartoma of the renal pelvis: unfrequent finding]. / Hamartoma quístico de pelvis renal, un hallazgo infrecuente.

OBJECTIVES: This cystic hamartoma of the renal pelvis is a very unfrequent benign tumor. We report one case emphasizing its histology and performed a bibliographic review. METHODS: Mid age female patient with the incidental diagnosis of a renal mass taking up the pelvis. RESULTS: A radical nephrectomy was performed with the pathologic report of cystic hamartoma of the renal pelvis. CONCLUSIONS: It is a cystic renal tumor with well-defined histologic and immunohistochemical criteria, and it probably does not involve any danger for the patient's live.

[Bladder metastasis of renal carcinoma]. / Metástasis vesical de carcinoma renal.

OBJECTIVES: We report the case of a patient who had underwent surgery for a clear cell renal carcinoma 2 years before presenting with metastasic extension to bladder on follow-up. METHODS: Radiological finding of a bladder mass during follow-up after nephrectomy. RESULTS: TURBT was carried out with the pathologic report of clear cell carcinoma, compatible with a primary renal origin. CONCLUSIONS: Bladder is a very rare place for metastasis from kidney tumors. Prognosis will depend on the time of appearance of such metastases.

[Obstructive urethral angioleiomyoma]. / Angioleiomioma uretral obstructivo.

OBJECTIVES: To report one case of urethral angioleiomyoma because of the rare site, and to review its main characteristics. METHODS: We report one case of male urethra angioleiomyoma presenting with obstructive symptoms. RESULTS: We performed excision and end to end anastomosis of a small bulbar urethra stenosis. Pathology reported angioleiomyoma. CONCLUSIONS: Angioleiomyoma is a benign tumor arising from smooth muscle within blood vessel walls. It is extremely rare in the urethra. It is more common in females. Recurrence and metastasis are exceptional. It shows scarce or moderate cellularity with predominance of fusiform cells. They may express smooth muscle vimentin, desmin, and actin. The best therapeutic option is resection.