title: [High-resolution magnetic resonance tomography by means of an endorectal coil--the results in rectal tumors].
abstract: OBJECTIVE
  To assess the value of high-resolution MRI of the rectum using an endorectal coil.
  
  
  METHODS
  10 volunteers and in 31 patients with suspected rectal tumors were examined. In 17 patients (n = 17) with rectal carcinoma, of which 15 subsequently underwent radical surgery, the preoperatively obtained tumor stage was compared with histology. In 12 patients (n = 12) with rectal adenoma (severe and medium graded epithelial dysplasias according to the WHO) who underwent endoscopy the results of the endorectal surface coil examination were compared with endoscopy and histology. In 4 patients (n = 4) with large rectal adenomas the surface coil was used before and as follow-up after endoscopic electro laser resection and the absence of adenoma after therapy also in the deeper layers of the rectal wall could be confirmed.
  
  
  RESULTS
  Visualization of anatomical structures of rectum and adjacent structures is improved by the use of the endorectal surface coil. The diagnosis of carcinoma and adenoma of the rectum and the documentation of the exact extension can be reached with high accuracy (85%).
  
  
  CONCLUSIONS
  MRI with an endorectal surface coil may play an important role in the preoperative diagnosis of rectal carcinoma. This method is useful for primary diagnosis and follow-up of large rectal adenoma after endoscopic electro laser resection.
authors.affiliation: Strahlenklinik und Poliklinik, Humboldt-Universität Berlin.
authors.forename: W
authors.initials: W
authors.lastname: Pegios
authors.forename: T J
authors.initials: TJ
authors.lastname: Vogl
authors.forename: M
authors.initials: M
authors.lastname: Hünerbein
authors.forename: M G
authors.initials: MG
authors.lastname: Mack
authors.forename: R
authors.initials: R
authors.lastname: Hintze
authors.forename: A
authors.initials: A
authors.lastname: Adler
authors.forename: O
authors.initials: O
authors.lastname: Söllner
authors.forename: H
authors.initials: H
authors.lastname: Lobeck
authors.forename: P
authors.initials: P
authors.lastname: Wust
authors.forename: P
authors.initials: P
authors.lastname: Schlag
authors.forename: R
authors.initials: R
authors.lastname: Felix
mesh_terms: D000236:Adenoma / Q000175:diagnosis* / Q000473:pathology; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002277:Carcinoma / Q000175:diagnosis* / Q000473:pathology; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000295:instrumentation* / Q000379:methods; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging; D011446:Prospective Studies; D012004:Rectal Neoplasms / Q000175:diagnosis* / Q000473:pathology; D012007:Rectum / Q000473:pathology*; D012016:Reference Values
vernacular_title: Hochauflösende Magnetresonanztomographie mittels Endorektalspule--Ergebnisse bei Tumoren des Rektums.