Abstract
Traditional surgical treatment of non‐melanoma skin cancer includes excision with subsequent surgical margins, the “security” margins leading to determine the theoretical level of recurrences. Thus, some authors favor a clinical excision margin of 4 mm for basal cell carcinoma and 6 mm for squamous cell carcinoma. However, such “security” margins could not be applied in all cases of eyelids tumors for anatomic and functional considerations because such recommendations may lead to severe ocular complications. Thus the best assurance of minimal excision with complete excision is obtained by extemporaneous examination of the resection margins by frozen section or by surgery in two times. The aim of this paper is to review these two techniques for eyelids (lid margins) and medial canthus. This article will discuss the concept of surgical margins in excisions of non‐melanoma skin cancer and the role of frozen section of the margins for minimizing the amount of tissue that must be excised.
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