A 4-month-old infant presented with a midline cervical mass apparent only when he cried. Surgical exploration revealed this mass to be the thymus gland in the suprasternal region through the area of Burn's space. The thymus was removed and the patient has had no complications.
Thompson RE, Love WG. Persistent Cervical Thymus, Apparent Only With Crying. Am J Dis Child. 1972;124(5):762–763. doi:10.1001/archpedi.1972.02110170140024