Essential osteolysis associated with nephropathy, corneal opacity, and pulmonary stenosis

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Abstract
We report on 5‐year‐old girl with essential osteolysis, nephropathy, corneal opacity, and valvular pulmonary stenosis. The patient was initially seen for evaluation of flexion contractures at wrists, elbows, and knees. Radiographic examination showed osteolytic changes primarily involving the hands and feet. She had persistent proteinuria; renal biopsy disclosed focal glomerulosclerosis in 1/3 of glomeruli. Electron microscopic study of skin fibroblast showed dilated and vacuo‐lated rough endoplasmic reticulum. To our knowledge essential osteolysis associated with the aforementioned disorders has not been previously reported.

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