[Incidence of second primary malignant neoplasms in patients treated for laryngeal cancer].

Although the survival rates reported for patients with laryngeal cancer are quite good, there is a risk of developing second malignant tumors in this population. From a total analyzed of 1268 patients with laryngeal cancer, the second malignant tumors in 30 persons group were identified. The prognosis for second malignant tumors is poor, especially with tumors of the lung and oesophagus. Vitamin A and carotenoids are promising for second malignancies prevention.