Multiple calvarial "doughnut lesions".

  title={Multiple calvarial "doughnut lesions".},
  author={P M Royen and M. B. Ozonoff},
  journal={The American journal of roentgenology, radium therapy, and nuclear medicine},
  volume={121 1},
Osseous and biochemical abnormalities are described in an essentially asymptomatic 13 year old male.Roentgenographically similar bone lesions have been documented as isolated occurrences, but the combination of skeletal and biochemical findings noted herein has not been presented previously.The etiology of these findings remains obscure. 

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