摘要:
In many clinical situations, endoscopy has replaced barium examination as the primary means of assessing the mucosa of the upper gastrointestinal tract and colon. Owing to the relative limitations of availability and thoroughness of enteroscopy, however, radiologic studies retain a role ofprincipal importance in the evaluation of the small bowel. Computed tomography and ultrasound imaging provide unique diagnostic information, but their role most often is complementary to the demonstration of small bowel details provided by barium contrast examinations.Despite an extensive mucosal sugace, the incidence of small bowel disease is low, and the symptoms of small bowel disease often are simulated by disease of other organs. Establishing a definitive diagnosis often can be difficult. An accurate radiologic examination to exclude small bowel disease definitively can be as important in the evaluation of patients as the diagnosis of a small bowel abnormality. Clinically effective small bowel imaging, therefore, not only should be able to diagnose small or early structural small bowel abnormality, but also must document reliably the normal small bowel morphology.The current imaging literature rejlects the limitations of the conventional smnll bowel follow-through examination, describes modifications to improve its diagnostic yield, and establishes the contribution of enteroclysis examination in the work-up and management of patients with possible small bowel disease.The purpose of this lesson is to discuss the accepted clinical indications for small bowel radiography, which include: (1) suspected small bowel obstruction, (2) possible small bowel neoplasm, (3) Crohn's disease, (4) unexplained or obscure gastrointestinal bleeding, and (5) malabsorption.
ISSN:0149-9009
出版商:OVID
年代:1996
数据来源: OVID