This week's artwork was donated by Lonny, a pediatric cancer patient who received treatment at The Children's Hospital of Philadelphia . The presence of K-12 ras mutations in duodenal adenocarcinomas and the absence of ras mutations in other small bowel adenocarcinomas and carcinoid tumors. The value of somatostatin-receptor scintigraphy in newly diagnosed endocrine gastroenteropancreatic tumors.
Carcinoids are tumors producing excessive amounts of serotonin.
The authors briefly characterize the possibilities of diagnosis. They summarize the current opinions on the therapy of this disease. Ospedale Regionale S. Maria dei Battuti, Treviso. Carcinoid tumors are among the most frequently neuroendocrine neoplasms of the gastrointestinal tract. They occur more commonly as benign diseases but malignant ones can also be found.