The occurrence of mediastinal teratoma in children is unusual. Hedblom1 in a recent review of the literature found reports of 191 cases of intrathoracic dermoid cyst and teratoma. Of these only 21, or 11 per cent, occurred in children under 12 years of age; 6 occurred in children less than 1 year of age.
The following report concerns an infant with a teratoma completely enclosed within the pericardial sac. Since only 2 similar cases are on record, it was thought worth while to report this one.
REPORT OF CASE
E. C., a white girl 3 weeks old, was admitted on Sept. 13, 1933, to the Strong Memorial Hospital, where she died on September 22.Present Illness.—Cough and dyspnea had been present since birth. The cough was intermittent and at times spasmodic. She took breast feedings well and thrived the first week of life. When 6 days old, she