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ResumenIntroducciónEl nefroma mesoblástico es un tumor de la infancia y de excepcional aparición en adultos. Presentamos un caso en una mujer adulta.MétodosMujer de 53 años con tumor palpable, hematuria y dolor con hallazgo mediante TAC de tumor renal izquierdo heterogéneo; se realizó nefrectomía radical izquierda.ResultadosSe obtuvo un tumor lobulado de 17×16cm, de 1,850g de peso, sólido, nodular, blanquecino al corte y de aspecto fibroso; al microscopio, con células ahusadas largas, vasos delgados y túbulos en el estroma, vimentina positivas en las células tumorales, sin atipia.ConclusiónLa paciente, a 2 años de vigilancia, está libre de recurrencia. Se reportó un tumor nefroma mesoblástico benigno pero de gran tamaño y con gran repercusión clínica. Se requiere vigilancia ante la posible recurrencia en tumores grandes.AbstractBackgroundMesoblastic nephroma is a tumor that classically appears in childhood, and rarely in the adult. We present herein a case in an adult woman.MethodsA 53-year-old woman presented with a palpable tumor, hematuria, and pain. A CAT scan revealed a heterogeneous left renal tumor. Left radical nephrectomy was performed.ResultsA lobulated tumor was obtained that measured 17×16cm and weighed 1,850g. When sliced, a solid, nodular, whitish tumor with a fibrous aspect was revealed. Microscopic study showed long spindle cells and thin vessels and tubules in the stroma. The tumor cells were positive for vimentin and there was no atypia.ConclusionThe patient is recurrence-free at 2 years of surveillance. The tumor was a benign mesoblastic nephroma, but it was very large and with serious clinical repercussions. The patient requires continued surveillance because of possible large tumor recurrence. |
