Dislocation of the sternoclavicular joint (DSCJ) with posterior displacement of the clavicle is uncommon in children. This can lead to ipsilateral compression of the great vessels. Diagnosis may not be apparent on routine radiographs. Axial computed tomographic (CT) scan is the imaging of choice for diagnosis. Reconstruction and 3-dimensional (3D) views on CT scan may be helpful to define the anatomy before surgical reduction. We present 2 patients who had traumatic posterior DSCJ with compromise to their vascular structures. Patient 1 was a 13-year-old boy with posterior DSCJ on his left side that was not apparent on x-ray and that was diagnosed to have encroachment of the medial end of the clavicle on the left brachiocephalic vein on CT scan. Reconstruction and 3D views on CT scan were helpful in defining the anatomy before surgical reduction. The patient underwent emergent open reduction and internal fixation with complete recovery.Patient 2 was a 14-year-old boy with posterior DSCJ on the right side that was apparent on x-ray and was evaluated to have encroachment of the medial end of the clavicle on the right innominate artery with an associated paratracheal hematoma on CT scan. Reconstruction and 3D views on CT scan were also helpful in defining the anatomy before surgical reduction. The patient underwent a successful closed reduction with complete recovery.
Atrioventricular (AV) block is a delay or an interruption in the transmission of an impulse from atria to ventricles due to an anatomic or a functional impairment in the conduction system. Atrioventricular block may be congenital or acquired. Electrocardiographic screening of asymptomatic school-aged children (median, 12.4 years) in Japan found the prevalence of a third-degree AV block to be 2 per 100,000. We report a case of asymptomatic complete AV block of unknown etiology in a 13-year-old child who did not require pacemaker placement. The importance of recognizing an asymptomatic complete AV block in the pediatric population, the classification and controversies of pacemaker placement, and the complications of pacemaker placement are discussed.
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