Morpheaform basal cell carcinoma (BCC) represents a minority of BCCs and has a different clinical and histopathologic presentation. While it demonstrates tissue destruction like the nodular form, it frequently has ill-defined borders and is usually larger than estimated on gross examination. a. This morpheaform BCC presents an erosive lesion in the left medial canthus, with ill-defined borders. b. Resection with histologic control of margins demonstrates that tumor extent was greater than estimated from the gross appearance. This can be a common development in the surgical management of morpheaform BCC.