Journal of the American Academy of Dermatology
Usefulness of the staged excision for lentigo maligna and lentigo maligna melanoma: The “square” procedure☆,☆☆
Section snippets
TECHNIQUE
For LM, the clinical margin of the lesion is outlined during Wood’s lamp examination. With the intent to clear the tumor with the initial surgical procedure, a surgical margin of 0.5 to 1 cm is outlined with geometric angled corners of the lines, such as in the form of a square or rectangle. Geometric configuration with angled corners of the surgical excision margin lines, rather than rounded lines (e.g., circle, oval) is necessary to facilitate tissue processing, enabling the technician to
DISCUSSION
The number of new cases of melanoma continues to rise at a rate faster than that of any other human cancer. 33, 46 Although melanoma represents a relatively small percentage of all skin cancers, it accounts for approximately 75% of the deaths from skin cancer. Several independent factors are useful for prognosis and treatment of melanoma including tumor thickness, ulceration, location, and sex. 33 Other important prognostic factors include angiolymphatic invasion, micro-satellitosis, and
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Reprint requests: Timothy M. Johnson, MD, University of Michigan, Department of Dermatology, 1910 Taubman Center, Box 0314, Ann Arbor, MI 48109-0314.
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