Magnetic Resonance Imaging in Pediatric Acetabulum Fractures with Open Triradiate Cartilage-A Report of 3 Cases.

We present three cases of posterior wall acetabulum fractures occurring in pediatric patients with open triradiate cartilage for whom preoperative magnetic resonance imaging was obtained and open reduction and internal fixation was done. All patients had excellent outcomes at an average of 68-week follow-up. Failure to adequately recognize the severity of pediatric acetabulum fractures can lead to detrimental long-term sequelae in acetabular development when treated nonsurgically. Management of this rare injury is not well reported in the literature. We highlight the utility of MRI in evaluating potential nonosseous injury and examining the articular surface to guide surgical management.

Gargantuan left atrium: a sequela of mitral regurgitation and mitral stenosis.

Cardiac magnetic resonance imaging and echocardiography revealed a gargantuan left atrium measuring 18.9 cm × 15.7 cm × 11.3 cm in a 56-year-old patient diagnosed with severe rheumatic mitral stenosis, severe pulmonary hypertension, and permanent atrial fibrillation. A chest x-ray also revealed a cardiothoracic ratio approaching 1.0 and a transthoracic echocardiogram measured diameters as large as 19.2 cm. The patient then underwent mitral valve replacement and left atrial reduction surgery and has had no further admissions or complications.