Dictionary of Cancer Terms
View in Spanish: Carcinoma de células de Merkel en estadio I
Stage I Merkel cell carcinoma (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.
Source: National Cancer Institute Dictionary of Cancer Terms, available at www.cancer.gov/dictionary.