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Table 1 Classification by pattern of bone involvement

From: Imaging of skull vault tumors in adults

PseudolesionsLyticSclerotic/mixedTransdiploic
Arachnoid granulation
Meningo-/encephalocele
Dilated vascular canals
Internal hyperostosis
Biparietal thinning
Enlarged parietal foramina
Sinus pericrani
Fibrous dysplasia
Epidermal inclusion cyst
Eosinophilic granuloma
Intraosseous hemangioma
Plasma-cell myeloma
Giant-cell tumor
Aneurysmal bone cyst
Meningioma*
Lymphoma*
Metastasis*
Osteoma
Osteosarcoma
Meningioma*
Lymphoma*
Metastasis*
Meningioma*
Hemangiopericytoma
Lymphoma*
Plasmacytoma*
Metastasis*
  1. *Metastasis, meninigioma, lymphoma, and plasmacytoma may be transdiploic, originating from the intracranial extraaxial soft-tissue, or intradiploic as primary bone lesions