PMC6558230_01
Clinical presentation upon day of surgery.
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On examination, there was a solitary scalp swelling (Fig. 1) measuring 7 x 7 cm in size, with a crusted surface.
CT head showing subcutaneous extra cranial cystic lesion with no intracranial connections.
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A. H&E section H&E section (2x) : Low power of the cyst lined by malignant squamous epithelium. B. H&E section H&E section (10x) High power of cyst lining with foci of stromal invasion. (highlighted by red arrow) by islands of malignant squamous epithelium.
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The sections showed fragments of cyst wall lined by malignant squamous epithelium with no benign epithelial component identified (Fig. 3A-C).
Patient's presentation on follow up after 2nd surgery.
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Post-op, the patient did well (Fig. 4).