Accuracy of Diagnostic Biopsy for Cutaneous Melanoma: Implications for Surgical Oncologists

Table 4

Frequency of residual melanoma on wide local excision by biopsy margin status.

Residual melanoma on WLE	Present	Absent	P value
Biopsy margin status
Negative	14/128 (11%)	114/128 (89%)	Reference
Any margin positive	107/204 (52%)	97/204 (48%)	<0.001
Deep margin positive	25/49 (51%)	24/49 (49%)	<0.001

WLE: wide local excision.