We describe 5 patients who presented with musculoskeletal abnormalities in the neonatal period. All patients were initially suspected to have Larsen syndrome or Beals syndrome but were subsequently diagnosed with a TGFBR2 mutation diagnostic of Loeys-Dietz syndrome. Patients had progressive aortic enlargement, which necessitated surgical intervention for 3 patients and resulted in the death of 1 patient. Delay in diagnosis of Loeys-Dietz syndrome may be associated with adverse prognosis.
Department of Pediatrics, Division of Cardiology, Primary Children's Medical Center, University of Utah, Salt Lake City, Utah 84113, USA. angela.yetman@intermountainmail.org
