stage III

Definition of stage IIIA melanoma
National Cancer Institute

stage IIIA melanoma

(... MEH-luh-NOH-muh)
Stage III is divided into stages IIIA, IIIB, IIIC, and IIID. In stage IIIA, the tumor is not more than 1 millimeter thick, with ulceration (a break in the skin), or not more than 2 millimeters thick, without ulceration. Cancer is found in one to three lymph nodes by sentinel lymph node biopsy.

Source: NCI Dictionary of Cancer Terms