Accumulation of mesalazine pills in the medium ileum in a patient with Crohn´s disease.

Crohn´s disease is an inflammatory disease that can involve any portion of the gastrointestinal tract, although terminal ileum is the most commonly affected portion. It is characterized by a transmural and discontinuous distribution pattern, with alternating periods of active disease and remission. We present the case of a 23-year-old patient diagnosed with Crohn´s disease, in treatment with extended release Mesalazine and corticoids. The CT Enterography showed activity signs and a great dilatation of medium ileum with lots of Mesalazine pills accumulated inside. Pill accumulation occurred because of stenosis, which did not let the pills at this level progress to distal ileum, and be absorbed.

Imaging of shoulder instability.

This extended review tries to cover the imaging findings of the wide range of shoulder injuries secondary to shoulder joint instability. Usefulness of the different imaging methods is stressed, including radiography, computed tomography (CT) and magnetic resonance. The main topics to be covered include traumatic, atraumatic and minor instability syndromes. Radiography may show bone abnormalities associated to instability, including developmental and post-traumatic changes. CT is the best technique depicting and quantifying skeletal changes. MR-arthrography is the main tool in diagnosing the shoulder instability injuries.