Abstract
Fourteen patients were treated at Prefectural Miyazaki Hospital with diagnosis of cystic disease of paranasal sinuses from August 1976 to December 1978. Study of these cases indicates as follows.
1) These cystic lesions are more frequently observed in the postoperative cases.
2) Cystic lesions of postoperative paranasal sinuses are frequently revealed to be more advanced compared with those of non-operative.
3) Occlusive change of middle meatus is more often observed in the case with postoperative cystic disease of paranasal sinuses. Therefore on examination of the postoperative case with occlusive change of middle meatus, attention should be paied to the possibility of the development of these cystic lesions.
4) Operative procedure seems to be not unique cause of the development of these cystic lesions. For postoperative occlusive change of the ostia of paranasal sinuses seems to be so affected by the proliferative tendency of surrounding tissue.
