Incomplete Conventional Colonoscopy: Magnetic Resonance Colonography in the Evaluation of the Proximal Colon

Abstract

Dark-lumen MR colonography is a feasible and useful method of evaluating the entire colon in patients with incomplete conventional colonoscopy.

S3-Leitlinie – Kolorektales Karzinom

“…Bei Patienten mit stenosierenden Tumoren oder inkompletter Koloskopie aus anderen Gründen konnten in Fallserien mittels CT- [408 -411] oder MR-Kolonografie [438,439] proximale Tumoren oder Polypen nachgewiesen werden, sodass gemeinsame Leitlinien von ESGE und ESGAR von 2014 hier den Einsatz der CT-Kolografie empfehlen [440]. Allerdings gibt es inzwischen Evidenz für die Kolon-Kapselendoskopie bei inkompletter Koloskopie (natürlich nicht bei Stenosen), die in einer 2015 veröffentlich-ten kleineren randomisierten Studie (n = 100) hier doppelt soviele Adenome ≥ 6 mm wie die CT-Kolonografie fand (24,5 vs. 12,2 %) [441].…”

MR colonography: current status

“…Hereby, virtual endoscopy can provide helpful additional information [33][34][35]. Distending media used for MRC, namely water or gasiform substances, will pass the stenotic segments and will allow for a sufficiently high conspicuity of the prestenotic structures.…”

“…1). Hartmann et al [33] have assessed the concept of MRC in 32 patients with incomplete previous optical colonoscopy due to high-grade stenoses (n=26), bowel elongation (n=5) and patient intolerance (n=1). All stenoses were correctly identified on the MR data sets.…”

Colonography by CT, MRI and PET/CT combined with conventional colonoscopy in colorectal cancer screening and staging

“…The majority of the patients found MRC less unpleasant than CC and a majority would prefer MRC over CC as a future colon examination. MRC also appears to be less time consuming to the patients and medical personnel than CC with postprocedural monitoring [88,89] . MRC proved reliable in evaluating the majority of colonic segments inaccessible with CC.…”