Recently, a most unusual and at first perplexing intrathoracic condition was discovered in a new-born infant, which we considered of sufficient rarity and interest to justify reporting.
REPORT OF CASE
B., a boy, was born Oct. 2, 1924, weighing 3,250 Gm. The delivery was entirely normal and respiration started promptly and the baby appeared to be perfectly well until the fourth day after birth. At this time he suddenly became quite cyanotic and had great difficulty with respiration. One grain of caffein sodium benzoate was administered by hypodermic injection and oxygen inhalations were given, following which the condition of the baby distinctly improved. In addition, 30 cc. of citrated blood was injected subcutaneously. A short time later, an examination of the baby revealed that the right side of the thorax failed to expand on inspiration. The percussion note was dull over the entire right side of the chest, and the