Hypertrophic osteoarthropathy caused by lipoid pneumonia.

A case of hypertrophic osteoarthropathy in a 5-year-old Saudi boy is presented. The child developed painful joints, was found to have clubbing of fingers and radiologically hypertrophic osteoarthropathy was demonstrated. The underlying cause of the condition was ingestion of animal fat in infancy, with a history of ghee oil aspiration which caused a chronic lung inflammation, lipoid pneumonia, proven by lung biopsy.