The following case, which has been observed for four years, is one of an unusual type of decalcification of the bones in an 8 year old boy. A decreased calcium content of bone brings to mind the following conditions in which it tends to occur: osteitis fibrosa cystica, rickets, renal rickets, osteomalacia, hyperthyroidism, ammonium chloride and acid poisoning, atrophy of disuse and osteoporosis due to a low calcium and phosphorus intake. The case to be described does not readily fall into any of these categories.
REPORT OF A CASE
W. R., aged 4 years, was first admitted to the Lenox Hill Hospital on Dec. 22, 1927, because of a reducible right inguinal hernia which had been growing larger since birth. He had lived in New York all his life. Both parents, Porto Rican by birth, were well. The mother had never had a miscarriage. The patient had four brothers and