Calvarial fibrous dysplasia

Case contributed by Ammar Haouimi


Hard lump at the right parietal region.

Patient Data

Age: 12 years
Gender: Female

Expansile lesion with ground-glass appearance of the right parietal bone arising mainly from the external table of the skull with no cortical breach or soft tissue component.

Normal appearance of the cerebral parenchyma and posterior fossa structures. Normal ventricular system.

Case Discussion

CT features of an expansile ground-glass bony lesion of the right parietal bone with no soft tissue component or cortical breech most consistent with fibrous dysplasia.

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