Regarding malignant melanoma all the following are true EXCEPT

Ans) d (May shows spontaneous regression) Ref: Sabistons textbook of surgery 18th editionRisk factors1. Solar ultraviolet (UV) radiation - actinic damaged skin2. Severe bums in childhood3. Fair complexion4. Dysplastic nevus (DN) syndrome5. Xeroderma pigmentosum6. History of nonmelanoma skin cancer (NMSC)7. Family history of melanoma.Precursor Lesions and Risk Factors1. Congenital nevi2. DNs3. Spitz neviHistologic types of Cutaneous MelanomaSuperficial spreading melanoma - most commonLentigomalignaAcral lentiginous melanomaNodular melanomaPrognostic factors1. LN involvement (Most important)2. Breslows thickness (Major determinant in the absence of nodal disease)