title: Renal smooth muscle tumor with features of lymphangioleiomyomatosis. Problems in histological diagnosis.
abstract: A 44-year-old woman with left kidney tumor involving the perirenal and retroperitoneal lymph nodes is presented. Imaging findings including ultrasonography and computerized tomography showed renal and para-aortic masses and no features of lymphangioleiomyomatosis or angiomyolipoma were seen. The histopathological examination was considered as a renal smooth muscle tumor with features of lymphangioleiomyomatosis. Diagnosis considerations, particularly histopathological, immunohistochemical and hormonal studies are discussed and we comment the distinction of this case from the benign mesenchymal tumors.
authors.affiliation: Department of Pathology, POVISA Medical Center, Vigo, Spain. psanmiguel@hotmail.com
authors.forename: P
authors.initials: P
authors.lastname: San Miguel
authors.forename: G
authors.initials: G
authors.lastname: Fernández
authors.forename: F
authors.initials: F
authors.lastname: Sacristán
authors.forename: C
authors.initials: C
authors.lastname: Alvarez
authors.forename: J A
authors.initials: JA
authors.lastname: Ortiz-Rey
authors.forename: I
authors.initials: I
authors.lastname: Antón
authors.forename: E
authors.initials: E
authors.lastname: Zungri
authors.forename: A
authors.initials: A
authors.lastname: de la Fuente
mesh_terms: D000328:Adult; D002292:Carcinoma, Renal Cell / Q000473:pathology*; D005260:Female; D006801:Humans; D007680:Kidney Neoplasms / Q000473:pathology*; D018192:Lymphangioleiomyomatosis / Q000473:pathology*; D009130:Muscle, Smooth; D009379:Neoplasms, Muscle Tissue / Q000473:pathology*