[Polymyalgia rheumatica].

The rectum has become the most successful area of the gastrointestinal tract to be studied with MRI. Its anatomical location, fixed in the pelvic fat, and its lack of peristalsis, make it an ideal organ to be scanned with MRI. In addition, MRI allows a direct sagittal and coronal display, of key importance to colorectal surgeons whose terminology and approach are based on the coronal plane. The sagittal plane allows the depiction of the relation of the rectum to the sacrum, uterus and prostate, with detail not available by other imaging techniques, and the use of endorectal coils allows excellent demonstration of the rectal wall. Although MRI has been used primarily to study rectal carcinoma, other diseases, congenital, inflammatory and vascular in origin, can be studied using the correct technique.

Diagnosis, Differential↗

PubMed1998

Chest roentgenology in the intensive care unit: an overview.

Chest roentgenology in the intensive care unit is a real challenge for the general radiologist. Beyond the basic disease, the critically ill is at risk for developing specific cardiopulmonary disorders, all presenting as chest opacities, their diagnosis often being impossible if based only on the radiological aspect. To make things harder, their appearance can vary with the subject's position and the mechanical ventilation. Patients require a continuous monitoring of the vital functions and their mechanical and pharmacological support, for which they are connected to different instruments. The radiologist should know the normal position of these devices, and promptly recognize when they are misplaced or when complications from their insertion occurred. Our aim is to suggest for each of the above-mentioned conditions a guideline of interpretation based not only on the radiological aspect and distribution of the lesions, but also on the physiopathological and clinical grounds.

Diagnosis, Differential↗