Skull vault epidermoid
Diagnosis almost certain
Updates to Case Attributes
Body
was changed:
A benign, slow-growing lesion of the skull due to aberrant epidermal inclusion in the calvariumcalvaria. Differential diagnosis is Langerhans cell histiocytosis in a child/young adult, metastasis and plasmacytoma. Key to diagnosis is the intradiploic location with well-demarcated lysis expanding both the inner and outer tables of the skull and well defined borders. The MRI findings of marked restricted diffusion are typical of epidermoid.
-<p>A benign, slow-growing lesion of the skull due to aberrant epidermal inclusion in the calvarium. Differential diagnosis is Langerhans cell histiocytosis in a child/young adult, metastasis and plasmacytoma. Key to diagnosis is the intradiploic location with well-demarcated lysis expanding both the inner and outer tables of the skull and well defined borders. The MRI findings of marked restricted diffusion are typical of epidermoid.</p>- +<p>A benign, slow-growing lesion of the skull due to aberrant epidermal inclusion in the calvaria. Differential diagnosis is Langerhans cell histiocytosis in a child/young adult, metastasis and plasmacytoma. Key to diagnosis is the intradiploic location with well-demarcated lysis expanding both the inner and outer tables of the skull and well defined borders. The MRI findings of marked restricted diffusion are typical of epidermoid.</p>
Presentation
was changed:
Recent blow to left parietal region. CT scan to assess for intra-cranialintracranial injury. No previous history of malignancy.
Updates to Study Attributes
Findings
was changed:
Small left parietal scalp haematoma (arrow) with adjacent expansile soft tissue mass in the skull vault. Soft tissue denistydensity not fat so not a dermoid. Bone margins are regular or scalloped. Incidental right skull vault osteoma.
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