title: [Granular-cell tumor (Abrikossoff's tumor): precise preoperative diagnosis is crucial when for minimally-invasive resection].
abstract: METHODS
  A 38-year-old man was referred to a gastroenterologist because of thoracic pain and dysphagia of uncertain cause.
  
  
  METHODS
  Endoscopy revealed a centrally depressed, coarse submucosal tumor, 1.0 cm in diameter, in the anterior wall of the esophagus at about 35 cm from the teeth. Button-hole biopsy revealed histologically and immunohistochemically a granular cell tumor (Abrikossoff's tumor), positive for S-100 protein. CT-staging was unremarkable, except for a thickening of the distal esophageal wall.
  
  
  METHODS
  Minimally invasive submucosal resection was undertaken using the videoscopic/endoscopic rendezvous technique. Histological examination confirmed complete resection of the tumor. The clinical course was uneventful and endoscopy 6 and 12 weeks after the operation showed complete resection of the tumor.
  
  
  CONCLUSIONS
  An exact preoperative diagnosis beyond a mere description of site and morphology, but also providing the histopathological data creates favorable conditions for planning and performing a minimally invasive resection. Submucosal resection with the videoscopic/endoscopic in rendezvous technique offers the possibility of complete resection, which can often not be achieved in a submucosal tumor by only endoscopic resection.
authors.affiliation: Praxis für Gastroenterologie, Kirn. hwkarch@arcor.de
authors.forename: H W
authors.initials: HW
authors.lastname: Karch
authors.forename: I
authors.initials: I
authors.lastname: Gockel
authors.forename: M
authors.initials: M
authors.lastname: Goetz
authors.forename: A
authors.initials: A
authors.lastname: Kreft
authors.forename: H
authors.initials: H
authors.lastname: Lang
mesh_terms: D000328:Adult; D001706:Biopsy; D002637:Chest Pain / Q000209:etiology; D003680:Deglutition Disorders / Q000209:etiology; D003937:Diagnosis, Differential; D004938:Esophageal Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery*; D004945:Esophagoscopy / Q000295:instrumentation*; D004947:Esophagus / Q000473:pathology / Q000601:surgery; D006106:Granulosa Cell Tumor / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery*; D006801:Humans; D008297:Male; D019060:Minimally Invasive Surgical Procedures / Q000295:instrumentation*; D020775:Thoracic Surgery, Video-Assisted / Q000295:instrumentation*