Magnetic Resonance Imaging Provides Useful Diagnostic Information Following Equivocal Ultrasound in Children With Suspected Appendicitis [Formula: see text].

Purpose: In Canada, ultrasonography is the primary imaging modality for children with suspected appendicitis, yet equivocal studies are common. Magnetic resonance imaging provides promise as an adjunct imaging strategy. The primary objective of this study was to determine the proportion of children with suspected appendicitis and equivocal ultrasound where magnetic resonance imaging determined a diagnosis.

Magnetic resonance imaging of a restrictive atrial septal defect in a univentricular connection.

Magnetic resonance imaging (MRI) provides accurate and valuable information regarding cardiac shunts including their location, size, and flow. We describe the MRI findings of a restrictive atrial septal defect within a complex case of congenital heart disease: univentricular atrioventricular connection of left ventricular type with right-sided discordant atrioventricular connection (single), absent left atrioventricular connection, and ventriculoarterial discordance. Few similar cases are reported in the literature.

Widespread osteonecrosis in children with leukemia revealed by whole-body MRI.

Background: Confirmation of early long-bone epiphyseal osteonecrosis in pediatric patients with leukemia allows for medical and surgical intervention before articular surface collapse. MRI detects early osteonecrosis, but multiple focused MR images are required to capture all lesions.

Questions/purposes: We determined whether whole-body MRI (WB-MRI) could (1) assist in diagnosing long-bone epiphyseal and other osteonecroses, (2) characterize articular surface involvement, and (3) detect preferential sites for osteonecrosis.

Ingested foreign body mimicking an appendicolith in a child.

We describe an unusual case of a child who had ingested sand and stones and presented with signs and symptoms suggestive of appendicitis. Plain radiographs revealed calcific opacities in the right iliac fossa simulating appendicoliths. At surgery and histopathology a small sealed off perforation of the terminal ileum with hard concretions in the wall was observed.