A boy who can puff his neck: Bilateral internal jugular phlebectasia

A 5-year-old boy presented to our outpatient clinic with swelling on both sides of his neck. The parents reported observing an enlargement of the neck since the past two years, which was noted only when coughing or sneezing and soon downsized afterward. The presence of any pain or discomfort was denied. No history of trauma was reported. On physical examination, soft and cystic swelling bulged up with Valsalva maneuver in the level III and IV...