title: Leiomyoma of the kidney.
abstract: This is the report of a 27-year old woman with a symptomatic leiomyoma of the left kidney. Symptoms consisted of a mild discomfort at the left flank and a walking difficulty. A left radical nephrectomy was performed. The tumor measured 15 cm in its largest diameter and was composed of elongated cells which demonstrated positive reactivity with anti-desmin and anti-actin antisera and negative reactivity for S-100 protein and cytokeratins. Histologic differential diagnosis is with other spindle cell renal tumors such as leiomyosarcoma, mesoblastic nephroma, angiomyolipoma, fibroma, schwannoma and sarcomatoid renal cell carcinoma.
authors.affiliation: Division of Anatomic Pathology and Cytology, Istituto Nazionale per lo Studio e la Cura dei Tumori, Milano, Italia.
authors.forename: S
authors.initials: S
authors.lastname: Di Palma
authors.forename: R
authors.initials: R
authors.lastname: Giardini
mesh_terms: D000199:Actins / Q000032:analysis; D000328:Adult; D002292:Carcinoma, Renal Cell / Q000473:pathology; D003893:Desmin / Q000032:analysis; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D007680:Kidney Neoplasms / Q000473:pathology*; D007889:Leiomyoma / Q000473:pathology*; D009392:Nephrectomy
chemical_list: D000199:Actins; D003893:Desmin