A CASE OF INFECTIOUS MONONUCLEOSIS WITH ATYPICAL PNEUMONIA

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Abstract
A case has been presented in which the symptoms, physical signs and clinical: course are similar to those of primary atypical pneumonia. X-rays of the lungs revealed progressive changes through to almost complete resolution and are interpreted as being characteristic of the same disease. A significantly elevated cold agglutinin titer was present but agglutinins for Streptococcus MG and psittacosis were not present. The characteristic hematological picture of infectious mononucleosis was present with atypical lymphocytes, an initial leukocytosis followed by a mononucleosis and a return to a normal blood picture. The heterophile antibody titers were consistently elevated declining from an initial peak, and the Davidsohn test was interpreted as being serologically positive for infectious mononucleosis in a high titer. The cephalin flocculation and thymol turbidity tests were strongly positive on two occasions. It is suggested that in the presence of the hematological and serological picture of infectious mononucleosis, that the pneumonitis present represents a manifestation of the infection by the unknown etiologic agent of infectious mononucleosis.