RESUMEN
OBJECTIVE@#To investigate the value of sentinel lymph node of papillary thyroid carcinoma exploring and measuring in the metastasis of the cervical lymph node of thyroid carcinoma.@*METHOD@#The sentinel lymph node were investigated by injecting the methylene blue around 25 cases of thyroid tumors. The lymph nodes dyed in blue and obtained from selective lymph node dissection were examined by pathology, respectively. The value of the sentinel lymph nod were evaluated.@*RESULT@#The sentinel lymph nodes dyed in blue were identified in 22 cases which account for 88.0% of all the 25 cases. Nineteen cases of the sentinel lymph node were positive by pathology, of whom 13 cases were verified positive in other area. Six cases were negative.@*CONCLUSION@#It is of great value that sentinel lymph node of thyroid carcinoma can indicate the metastasis of the cervical lymph node of thyroid carcinoma.