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Cutaneous meningioma: histochemical, immunohistochemical and ultrastructural investigation

Histologically. the subcutaneous lesion was circumscribed, not capsulated and showed scattered lobules and nests of oval to spindle-shaped cells intermixed with fibro-collagenous stroma, sometimes arranged in a whorled configuration (Figure 1). Small peripheral nerves were present in the vicinity. The tumour cells had abundant, pale-staining eosinophilic cytoplasm and oval, vesicular nuclei with inconspicuous nucleoli. There was no nuclear pleomorphism or mitotic activity. Hyaline psammoma bodies were scattered within the tumour.