TY - CHAP M1 - Book, Section TI - The Omentum, Mesentery, and Peritoneal Cavity A1 - Wells, Robert G. PY - 2015 T2 - Diagnostic Imaging of Infants and Children AB - An internal abdominal herniation is the extension of an abdominal organ through a mesenteric or peritoneal aperture. These rare lesions can be congenital or acquired as a result of trauma or intra-abdominal surgery. There is an association of this lesion with intestinal malrotation. Internal abdominal herniations rarely present during childhood, even when the underlying cause is developmental. The clinical manifestations of internal abdominal herniation are nearly always nonspecific. Patients may report abdominal pain or discomfort that tends to be episodic. The pain is most often localized to the periumbilical region. Nausea may occur. Manifestations of an acute bowel obstruction develop if there is bowel incarceration. CT is the most useful diagnostic imaging study for the evaluation of internal abdominal herniations; contrast studies of the bowel and standard radiographs serve roles as well.1,2 SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/03/28 UR - accesspediatrics.mhmedical.com/content.aspx?aid=1148946311 ER -