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== Clinical Summary ==
This 63-year-old white male had recurrent thickening and scaling of the lower lip for two years. In recent months, it had undergone ulceration and progressive enlargement. The lesion was excised by a wedge resection.
The biopsy specimen was triangular in shape; the upper part was covered by mucosa and the lower part by skin. At the junction of the mucosa and skin there was a 2 x 1.4 cm oval shaped superficial lesion which was flat, firm, and had raised borders. The base was orange.
== Images ==
