title: Leiomyosarcoma of renal vein, initially resembling pheochromocytoma.
abstract: We report the case of a 43-year-old woman who presented with mild left-sided abdominal pain. Computed tomography and MRI findings revealed a 10.7 × 8.5 × 12 cm left-sided soft tissue mass on the renal vessels pushing away the left kidney. The combination of the patient's medical history (episodes of paroxysmal hypertension accompanied with dizziness and sweating) and radiological findings initially pointed toward the diagnosis of a paraganglioma or ectopic pheochromocytoma. Surgical removal of the tumor and left nephrectomy was performed. Histological findings were consistent with a renal vein leiomyosarcoma of a high malignancy grade. There is no evidence of local recurrence or metastatic disease for more than 2 years postoperatively, although the patient did not receive adjuvant chemotherapy or radiation therapy.
authors.affiliation: 2nd Prop. Department of Internal Medicine, Aristotle University, Thessaloniki, Greece.
authors.forename: Stella
authors.initials: S
authors.lastname: Douma
authors.forename: Apostolos
authors.initials: A
authors.lastname: Kamparoudis
authors.forename: Konstantinos
authors.initials: K
authors.lastname: Petidis
authors.forename: Panagiota
authors.initials: P
authors.lastname: Anyfanti
authors.forename: Michael
authors.initials: M
authors.lastname: Doumas
authors.forename: Eugenia
authors.initials: E
authors.lastname: Gkaliagkousi
authors.forename: Areti
authors.initials: A
authors.lastname: Triantafyllou
authors.forename: Eleni
authors.initials: E
authors.lastname: Gavriilaki
authors.forename: Thomas
authors.initials: T
authors.lastname: Gerasimidis
authors.forename: Chrysanthos
authors.initials: C
authors.lastname: Zamboulis
mesh_terms: D015746:Abdominal Pain / Q000209:etiology / Q000601:surgery; D000310:Adrenal Gland Neoplasms / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000473:pathology*; D000328:Adult; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007668:Kidney / Q000000981:diagnostic imaging / Q000473:pathology; D007890:Leiomyosarcoma / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D009392:Nephrectomy / Q000379:methods; D010235:Paraganglioma / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D010673:Pheochromocytoma / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000473:pathology*; D011859:Radiography; D012082:Renal Veins / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D019043:Vascular Neoplasms / Q000175:diagnosis / Q000601:surgery