Hinchey classification of acute diverticulitis

The original Hinchey classification was based on perioperative surgical finding. It has been later modified by Sher et al.:

Modified Hinchey classification (Sher et al., 1997):

Stage Description
I Pericolic abscess
IIa Distant abscess amendable to percutaneous drainage
IIb Complex abscess associated with fistula
III Generalized purulent peritonitis

C-RADS - reporting system for CT colonography

In July 2005, Radiology published a consensus proposal for reporting in CT colonography. It has similar purpose and structure as Bi-RADS reporting system in breast imaging. According to this proposal, lesions and massess should be describes by:

  • Lesion size: the largest dimension (excluding stalk in pedunculated polyps) measures on MRP or 3D views.
  • Morphology:
    • Sessile: broad-based with height > width
    • Pedunculated: polyp with a stalk

Gastroesophageal reflux - grading on barium study

In 1977, a grading system of gastroesophageal reflux on barium study was devised. It is based on the extent of retrograde flow of barium.

Grade Description
I reflux into distal esophagus only
II reflux extending above carina
III reflux into cervical esophagus
IV free persistent reflux into cervical esopagus with a wide open cardia (chalasia)
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