PMC6275160_01
Non-healing wound on the right lower limb approximately 4 cm in diameter.
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The ulcer, approximately 4 cm in diameter (Fig. 1), was surgically excised with a 5 mm margin, without the use of frozen sections, and covered with a split thickness skin transplant. The histology showed an ulcerated basal cell carcinoma of nodular type, with growth deep into the dermis, but not involving the subcutaneous tissue.