MohsSurgeon.com is the website for Dr. Patricia Carroll-Chen and Precision Dermatology and Skin 
Dr. Patricia Carroll-ChenCancer Treatment Center located in Peoria, AZ.
Precision Dermatology is a clinic specializing in Mohs Micrographic Surgery - a highly effective procedure used in Skin Cancer removal.
Here are some indications that for a need for Mohs Micrographic Surgery:
Mohs micrographic surgery is indicated for tumors that occur in high-risk areas such as tumors located around the eyes, ears, nose, and lips have higher recurrence rates than do those in other parts of the body because they occur within embryonic fusion planes. This results in tumors invading more deeply and aggressively than would otherwise be expected.
Other indications for Mohs surgery are recurrent tumors, tumors greater than 2 cm in diameter, and incompletely excised carcinomas. Tumors that do not meet these criteria but are indications for Mohs surgery regardless of their location include cutaneous malignancies with ill-defined tumor borders and with aggressive histology. Morpheaform and metatypical basal cell carcinomas also should be treated with the Mohs technique to trace out all extensions of tumor.