Abstract
We reviewed the imaging of four pathologically proven calvarial eosinophil granulomas. The diameter of the lesions ranged from 13 to 40 mm; three were biconvex, but the other had a collar-stud appearance. Two lesions were in the frontal and two in the parietal bone. On bone-window CT, a bevelled edge was seen in three cases and button sequestration in one, but no sclerotic rim was shown. Although one lesion had a low-density area, the lesions were slightly denser than grey matter. They were isointense with grey or white matter on T1-weighted MRI and gave heterogeneous high signal on proton-density and T2-weighted images. All enhanced markedly, with a less strongly enhancing portion within them. A tail of dural enhancement and reactive change in the overlying galea or temporal muscle were seen in all cases.
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Received: 24 November 1998 Accepted: 5 February 1999
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Okamoto, K., Ito, J., Furusawa, T. et al. Imaging of calvarial eosinophil granuloma. Neuroradiology 41, 723–728 (1999). https://doi.org/10.1007/s002340050831
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DOI: https://doi.org/10.1007/s002340050831