Histopathological Characteristics of Cutaneous Melanoma in Isfahan, Iran, from 2013 to 2018

Table 2

Frequency distribution of Breslow thickness and tumor invasion level.

Variable	Number	Percent
Depth of tumor penetration (Breslow thickness)
<1.00	11	24.4
1.00–2.00	7	15.6
2.01–4.00	11	24.4
>4.00	16	35.6
Total	45	100
Clark’s invasion level
Level I: limited to the epidermis	3	6.7
Level II: invasion of the papillary dermis	8	17.8
Level III: filling the papillary dermis to connect the reticular dermis	5	11.1
Level IV: invasion of the reticular dermis	19	42.2
Level V: fat invasion	10	22.2
Total	45	100