With more patients receiving artificial nutrition, i.e., TPN and EN, deficiencies of essential trace elements have appeared. Because symptomatic deficiencies might be only a small part of the abnormalities, we should recognize a much wider background of abnormal metabolism and physiology of such elements and examine their possible participation in most diseases. Measurements of biochemical indices of trace elements in these patients frequently reveal decreased levels. To prevent marginal deficiencies and maintain good balance in the body, routine administration of trace elements is therefore essential. Discussions focus on daily requirements, including the recommended doses of each trace element in PN and EN formulas. The range of different recommended doses in different countries, and the content and completeness of trace element mixtures available in these countries is a matter of concern. A consensus based on better data from patients with different clinical states is urgently required.

Enteral Nutrition↗

PubMedDate not supplied

Case report: MR appearance of hemangiopericytoma of the thigh.

We report a case of hemangiopericytoma in the thigh of a 42-year-old woman. CT examination depicted a peripherally enhanced, multicystic mass without calcification. On T1-weighted images of MRI, the mass showed slightly high signal intensity relative to muscle, with the exception of the lower pole, which showed high signal intensity. On T2*-weighted images, the mass showed high signal intensity and cystic appearance. The lower pole showed low signal intensity on T2*-weighted images and was thought to be intratumoral hemorrhage. Low signal intensity structures on both T1- and T2*-weighted images were observed within and around the mass. They were thought to be dilated vessels, although this was not confirmed at surgery. Hemangiopericytoma should be considered in the differential diagnosis of a tumor in the thigh when MR images show the mass with slightly high signal intensity on T1-weighted images, intratumoral hemorrhage, and flow voids within or adjacent to the tumor.

Adult↗