title: Sonographic findings in a patient with neurofibromatosis type 1 and a gastrointestinal stromal tumor.
abstract: Gastrointestinal stromal tumors (GIST) have been suggested to be the most common neurofibromatosis 1-associated gastrointestinal tumors. This case report describes and compares US and CT findings of both abdominal neurofibromas and a gastrointestinal stromal tumor. On US, the GIST appeared as a well-defined inhomogeneous lesion with a target-like pattern similar to CT. The neurofibromas appeared as well-demarcated round nodules with a relatively homogeneous hypoechoic internal structure and were accompanied by subtle posterior acoustic enhancement. US and CT were able to differentiate between neurofibromatomas and GIST in this neurofibromatosis 1 patient; however, a biopsy of the suspicious mass was performed to clarify the diagnosis.
authors.affiliation: Department of Diagnostic Radiology, London Health Science Center, University Hospital, London, Ontario, Canada.
authors.forename: Marie-Theres
authors.initials: MT
authors.lastname: Girtler
authors.forename: Tobias
authors.initials: T
authors.lastname: De Zordo
authors.forename: Cesare
authors.initials: C
authors.lastname: Romagnoli
mesh_terms: D000369:Aged, 80 and over; D001706:Biopsy; D003287:Contrast Media; D003937:Diagnosis, Differential; D005500:Follow-Up Studies; D046152:Gastrointestinal Stromal Tumors / Q000000981:diagnostic imaging* / Q000473:pathology; D006801:Humans; D007414:Intestinal Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D007421:Intestine, Small / Q000000981:diagnostic imaging / Q000473:pathology; D008297:Male; D009456:Neurofibromatosis 1 / Q000000981:diagnostic imaging*; D011856:Radiographic Image Enhancement / Q000379:methods; D014057:Tomography, X-Ray Computed / Q000379:methods; D018615:Ultrasonography, Doppler, Color / Q000379:methods
chemical_list: D003287:Contrast Media