Endoscopic ultrasound-guided fine-needle aspiration cytology of peripheral nerve-sheath tumors.
Endoscopic ultrasound (EUS) has allowed for the fine-needle aspiration and diagnosis of many different gastrointestinal neoplasms, including mesenchymal tumors. Although most mesenchymal tumors of the gastrointestinal tract are gastrointestinal stromal tumors (GISTs), other mesenchymal tumors, including neural tumors, do occur. Proper diagnosis and differentiation of these tumors from GISTs are important because of their different prognoses and treatment regimens. We encountered three peripheral nerve-sheath tumors of the gastrointestinal tract aspirated by EUS (two schwannomas and a granular-cell tumor). We report on the endoscopic ultrasound, cytologic, histologic, and immunohistochemical findings of these cases.
Department of Pathology and Laboratory Medicine, Hennepin County Medical Center, Minneapolis, Minnesota 55415, USA. edstelow@yahoo.com
Edward B
EB
Stelow
Rebecca
R
Lai
Ricardo H
RH
Bardales
Bradley M
BM
Linzie
Shawn
S
Mallery
Michael W
MW
Stanley
D000328:Adult; D044963:Biopsy, Fine-Needle; D016099:Endoscopy, Gastrointestinal / Q000379:methods*; D019160:Endosonography; D005260:Female; D005770:Gastrointestinal Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging; D016586:Granular Cell Tumor / Q000175:diagnosis* / Q000000981:diagnostic imaging; D006801:Humans; D008297:Male; D008875:Middle Aged; D009442:Neurilemmoma / Q000175:diagnosis* / Q000000981:diagnostic imaging