True about malignant melanoma-
The main cause of death in melanoma patients is widespread metastases. Metastases develop in regional lymph nodes, as satellite or in-transit lesions, or in distant organs. Lymph flow and chemotaxis is responsible for the homing of melanoma cells to different sites Ref Harrison 20th edition pg 556
Lymphatic spread
Lymph node biopsy is always done
Biopsy to be done when sentinel node is involved
Microsatellitism seen
Oncology