Retrospective analysis of upper aerodigestive tract cancer and thyroid cancer

Objective:To study the definition,etiology,diagnosis,treatment and prognosis in patients with multiple primary malignant tumor of upper aerodigestive tract cancer and thyroid cancer.Method:Retrospectively analyze the events of 7cases with multiple primary malignant tumors of upper aerodigestive tract cancer and thyroid cancer.Result:Lesions of upper aerodigestive tract cancer and thyroid cancer located on the same side.After4 to 8years of follow-up,2cases of hypopharyngeal cancer and thyroid cancer got poor prognosis,prognosis of other patients with early stage laryngeal cancer and thyroid cancer is better.Conclusion:The prognosis of multiple primary malignant tumors in patients with upper aerodigestive tract cancer and thyroid cancer depends on the biological behavior of aerodigestive tract cancer.