title: [Gastrointestinal stromal tumor (GIST) in a patient with neurofibromatosis type 1. Report of one case].
abstract: Neurofibromatosis Type 1 (NF1) is an autosomic dominant condition affecting the central nervous system and presenting a disposition towards development of gastrointestinal stromal tumors (GIST). We report a 38 year-old female patient with neurofibromatosis type 1 that required emergency surgery due to a perforated GIST originating in the fourth duodenal portion. The GIST, and the fourth duodenal portion, were excised and a primary duodenum-jejunal anastomosis was performed. The pathological study showed a partially necrotic solid-cystic tumor with 1 to 2 mitoses per 50-high-power fields. The cells stained positively to CD 117, CD34 and Desmin, and were negative to S-100, Vimentin, and Smooth Muscle a-Actin. The patient is currently asymptomatic and under follow-up during the last 11 months after surgery.
authors.affiliation: Servicio de Cirugía, Hospital de La Serena, La Serena, Chile. beltran_01@yahoo.com
authors.forename: Marcelo A
authors.initials: MA
authors.lastname: Beltrán
authors.forename: Carlos
authors.initials: C
authors.lastname: Barría
authors.forename: Mario A
authors.initials: MA
authors.lastname: Contreras
authors.forename: Christian S
authors.initials: CS
authors.lastname: Wilson
authors.forename: Karina S
authors.initials: KS
authors.lastname: Cruces
mesh_terms: D000328:Adult; D005260:Female; D046152:Gastrointestinal Stromal Tumors / Q000473:pathology* / Q000601:surgery; D006801:Humans; D009456:Neurofibromatosis 1 / Q000150:complications*