[The problem of hidden metastases in larynx and hypopharynx carcinoma].

On the base of 1901 cases of larynx and hypopharynx carcinoma treated in ENT Department in Szczecin occurrence of occult nodal metastases was analysed. The frequency of such cases was 21%. Clinical statement and localisation of the tumour was the major factors predicted to occurrence of occult metastases. It was statistically pointed out that nodal recurrences occurred mainly among the patients with occult metastases. Survival rate was significantly better in group with no occult metastases (64.9%--3 year and 50.4--5 year) than in group with occult metastases (37.5%--3 year and 27.9%--5 year).