What happen if there are cancer cells in a sentinel lymph node in the biceps but none in the armpit? the tumor started from a nevus on the arm.

Adjuvant therapy: It means that after a wide surgical resection and lymph nodes dissection- you will need to get an adjuvant therapy to decrease your risk from having cancer recurrence. The options would be high dose interferon vs clinical trials. You need to see an oncologist and discuss pros and cons in detail with your oncologist. Also, will need to complete staging work-up- perhaps with a pet scan. Good luck.

Adjuvant treatment: For melanoma that has spread to the nodes, adjuvant therapy (such as interferon) can be considered. You should discuss with an oncologist. Was a node removed from the biceps and axilla, but only the biceps node was positive. If so, an axillary dissection may not be recommended. But if no node from the axilla was removed, dissection may be considered. Talk to your surgeon.

Complete dissection: I would recommend that you undergo a complete axillary dissection and a complete removal of any remaining nodes where the positive node was located.