In the Clatke&;s level of tumor invasion for malignant melanoma level 3 refers to
.Staging of Malignant Melanoma (It is older staging system) IA: Thickness less than 0.75 mm. IB: Thickness between 0.76 to 1.5 mm. IIA: Thickness between 1.51 to 4.0 mm. IIB: Thickness more than 4.0 mm. IIIA: Any of the above + nodes less than 3 cm. IIIB: Any of the above + nodes more than 3 cm. IV: Any of the above + any node + M1 (distant spread) ref:SRB;s manual of surgery,ed 3,pg no 262
All tumar cells above basement membrane
Invasion into reticular dermis
Invasion into loose connective tissue of papillary dermis
Tumor cells at junction of papillary and reticular dermis
General surgery