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Familial Onycho-Osteodysplasia

Am J Dis Child. 1964;107(6):640-643. doi:10.1001/archpedi.1964.02080060642016.
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Introduction  Iliac horns (Fong's lesion) are bilateral, but not always symmetrical, bony iliac protrusions arising from the posterior surfaces of the iliac bones. They are usually about 2.5 cm in diameter, and project about 3 cm laterally and posteriorly; in general, they are easily palpable. Although this abnormality is not rare, with cases being described predominantly in the radiologic literature, reports of this lesion are virtually absent from the pediatric literature. It therefore seemed desirable to bring this hereditary abnormality and its associated malformations involving fingernails and the skeletal system to the attention of pediatricians by reporting a case and briefly reviewing the pertinent literature.

Report of Case  A boy, 810/12 years of age, was brought to the Mayo Clinic in September, 1963, because of recurrent left abdominal pain. He is of Swedish-German descent and his pedigree on the paternal side is presented in Fig 1. At birth he had


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