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Figure 3: Cavernous hemangioma, HE, 50x. Histologic image of the tumours consisting in a well-defined proliferation of dilated tortuous vascular structures, closely adhering to each other, filled by erythrocytes in the lumen. They varied in size and were delimited by a single layer of flat endothelial cells. Superficially, the lesion was lined by hyperkeratotic squamous epithelium.