PMC10008422_01
Well-defined swelling with a depression on the top of the scalp.
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On examination, a 3x4 cm soft and movable mass was noted on the top of his scalp, upon which was a round depression with a diameter of 2 cm (Figure 1).
Epidermoid cyst lined by stratified squamous epithelium having granular layer and filled with laminated keratin material. (a) Bar length = 3mm. The rectangular box shows the structure of the cyst wall. (b) Bar length = 400mum.
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The cavity was filled with laminated keratin materials (Figure 2).