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NCI Dictionary of Cancer Terms


stage I Merkel cell carcinoma  listen  (stayj ... MER-kul sel KAR-sih-NOH-muh)

  Stage I Merkel cell carcinoma is divided into stages IA and IB. In stage IA, the tumor is 2 centimeters or smaller at its widest point and no cancer is found when the lymph nodes are checked under a microscope. In stage IB, the tumor is 2 centimeters or smaller at its widest point and no swollen lymph nodes are found by a physical exam or imaging tests.