Renal Pelvis Leiomyoma- An Infrequent Clinical Case PD12-PD13
Dr. Adolfo González-Serrano,
Hospital Ángeles Pedregal, Camino a Sta. Teresa 1055, Office 827, Héroes de Padierna, Magdalena Contreras,
D.F México. Postcode 10700, Magdalena Contreras, Distrito Federal, Mexico.
Renal pelvis leiomyomas are infrequent benign tumours. These tumours are more frequent in women, usually asymptomatic and difficult to distinguish from malign kidney masses. A 27-year-old female presented with an asymptomatic renal mass discovered after abdominal ultrasound during routine check-up. Percutaneous renal biopsy was performed and reported urothelial carcinoma. After open nephroureterectomy, histopathological evaluation and immunohistochemistry were positive for Smooth Muscle Actin (SMA), Ki67 <5%, and negative for cytokeratin and HMB-45. Thus, confirming the diagnosis of renal leiomyoma. The diagnosis of these infrequent tumours is often difficult and it is usually made by immunohistochemistry after surgical treatment.