Impact of the 2009 (7th Edition) AJCC Melanoma Staging System in the Classification of Thin Cutaneous Melanomas

Table 3

Staging and rate of SLNB in reported cohorts of patients with thin melanomas.

	No. of patients	Median age in years (range)	CL	Median BT in mm (range)	No. of patients with SLNB (%)	Patients with + SLNB	No. of positive SLN/total no. SLN
BT < 0.5 mm	39	55; (21–85)	II–IV	0.32; (0.12–0.49)	15 (38)	0	0/37
BT ≥ 0.5 mm	67	59; (11–86)	II–IV	0.70; (0.50–1.0)	50 (75)	3	4/139
Total	106	56.5; (11–86)	II–IV	0.60; (0.12–1.0)	65 (61)	3	4/176

CL: Clark level; BT: Breslow thickness; SLNB: sentinel lymph node biopsy; SLN: sentinel lymph node; no.: number.