One hundred and twenty-three patients with histiocytosis X were treated at the Hospital for Sick Children or the Princess Margaret Hospital between 1940 and 1970. Of these 123, 75 had involvement of a single system and 48 of more than one system at the time of diagnosis. The age of the total group ranged from 3 months to 50 years, but only three patients were over 16 years of age. The ratio of males to females was 1.9 to 1.
KeywordsDiabetes Insipidus Sick Child Synovial Sarcoma Single System Extensive Disease
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