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Article
May 1961

Seminiferous Tubule Dysgenesis: A Case of Klinefelter's Syndrome in a Ten-Month-Old Child

Author Affiliations

N.Y.; BROOKLYN
Department of Pediatrics, Kings County Hospital, and the State University of New York, Downstate Medical Center, Brooklyn.

Am J Dis Child. 1961;101(5):635-638. doi:10.1001/archpedi.1961.04020060093011
Abstract

The following case of Klinefelter's syndrome (seminiferous tubule dysgenesis), confirmed by testicular biopsy and chromosome count, is of interest because of the youth of the patient.

Report of Case  The patient (Fig. 1) is a 10-month-old Puerto Rican boy who was admitted to the hospital because of recurrent episodes of pneumonia. The parents, both 23 years of age, were in good health. The patient was the product of the mother's third pregnancy, the first having terminated in a spontaneous abortion at 6 months. There was a 2-year-old male sibling.Pregnancy and delivery were normal, no medication having been taken by the mother during pregnancy. There was no maternal exposure to x-ray. The patient's birth weight was 8 lb. 6 oz. (3,800 gm.). The patient was bottle-fed, and he sat up at the age of 9 months.Physical examination on admission revealed a well-developed, well-nourished male child with physical

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