CT, MRI, and 18F-FDG PET/CT in a patient with nested stromal epithelial tumor of the liver.

An 11-year-old girl presented with abnormal weight gain and was found to have hepatomegaly. MRI of the abdomen revealed a 20-cm hepatic mass. F-FDG PET/CT showed a large hypermetabolic calcified hepatic mass and couple of mildly hypermetabolic pulmonary nodules with associated intrathoracic lymphadenopathy.

Colonic manometry and colonic scintigraphy as a diagnostic tool for children with severe constipation.

Objective: In adults, colonic manometry and colonic scintigraphy are both valuable studies in discriminating normal and abnormal colonic motility. The objective of this study was to compare the diagnostic yield and tolerability of colonic manometry and colonic scintigraphy in children with severe constipation.

Methods: Twenty-six children (mean age 11.