This report consists of an analysis of two thousand consecutive cases admitted to the University of Michigan Hospital during a period of nearly two years. The ages of these patients range from 3 days to 12 years. All infants and children coming to the hospital are first admitted to the pediatric clinic for examination, so that both surgical and medical cases are included in this group. Of the two thousand patients there were only three who came because of symptoms related to the thymus gland. A large number of patients with thymic symptoms were observed during this time, but are not considered in this report, as they were treated in the outpatient department and not admitted to the wards. The patients studied were those in whom there was no particular reason to suspect thymic enlargement from the history. The diagnosis rests on physical examination, roentgen-ray examination of the thorax, and
GREENTHAL RM. THE INCIDENCE OF THYMIC ENLARGEMENT WITHOUT SYMPTOMS IN INFANTS AND CHILDREN. Am J Dis Child. 1922;24(5):433–440. doi:10.1001/archpedi.1922.04120110074009
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