In the past several years, the Department of Otolaryngology of the Babies Hospital has been requested to see many children with nasal symptoms who had previously been diagnosed as having fibrocystic disease of the pancreas. These children had various nasal complaints, but particularly nasal suppration and obstruction. All cases that were examined were found to have chronically diseased paranasal sinuses. The entity of sinusitis and bronchiectasis is well known, but in reviewing the literature of fibrocystic disease it was found that the paranasal sinuses were not, as a rule, included in the list of structures affected. Only Bodian1in his work on fibrocystic disease showed pathological studies of the entire respiratory tract, including the sinuses, and demonstrated that there were at times changes in nasal respiratory mucosa. Fibrocystic disease in the upper respiratory tract probably has gone unrecognized as such because the disease in the young child produces such obvious