title: Solitary fibrous tumor of the sella mimicking pituitary adenoma: an uncommon tumor in a rare location-a case report.
abstract: Solitary fibrous tumor (SFT) is rarely located in the central nervous system, and sella turcica involvement was reported in only two patients. We report the case of a 28-year-old man with a SFT of the sella turcica mimicking a pituitary nonfunctioning macroadenoma. He presented with optic nerve compression caused by a heterogeneous tumor located in the sellar and suprasellar area. At surgery, the tumor was hard and infiltrated the sellar diaphragm, so that resection resulted in a cerebrospinal fluid fistula. His postoperative course was also complicated by complete central diabetes insipidus, hypopituitarism, and two episodes of meningitis. After surgical resection, the diagnosis of SFT was reached on the basis of histological and immunohistochemical studies. He was discharged after 49 days. Ten months after surgery, he was clinically well, and magnetic resonance images showed no evidence of residual or recurrent tumor. SFT should be considered in the differential diagnosis of sellar and parasellar tumors.
authors.affiliation: Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil. furlanet@cpovo.net
authors.forename: Tania Weber
authors.initials: TW
authors.lastname: Furlanetto
authors.forename: Cláudio Faria Pitta
authors.initials: CF
authors.lastname: Pinheiro
authors.forename: Paulo Petry
authors.initials: PP
authors.lastname: Oppitz
authors.forename: Luiz Carlos
authors.initials: LC
authors.lastname: de Alencastro
authors.forename: Sylvia L
authors.initials: SL
authors.lastname: Asa
mesh_terms: D000328:Adult; D020790:Diabetes Insipidus, Neurogenic / Q000209:etiology; D003937:Diagnosis, Differential; D005402:Fistula / Q000209:etiology; D006801:Humans; D007018:Hypopituitarism / Q000209:etiology; D008279:Magnetic Resonance Imaging; D008297:Male; D008581:Meningitis / Q000209:etiology; D019635:Neurosurgical Procedures / Q000009:adverse effects; D010911:Pituitary Neoplasms / Q000473:pathology* / Q000601:surgery; D011183:Postoperative Complications; D012658:Sella Turcica / Q000473:pathology* / Q000601:surgery; D054364:Solitary Fibrous Tumors / Q000473:pathology* / Q000601:surgery; D014057:Tomography, X-Ray Computed