巨大な胞状上鼻甲介(superiorconchabullosa)例

Abstract

A concha bullosa is an aerated turbinate. It is the most common anatomic variant of the middle turbinate. Inferior concha bullosa is a less frequent anatomic variation. Recently we treated a patient with a massive superior concha bullosa with an infection which mimicked a nasal tumor.A 16-year-old boy presented with a right nasal obstruction. He had no medical history of nasal problems. On physical examination a large, firm, nonpulsatile mass was found to fill his right nasal cavity. A CT scan revealed a large intranasal bony rimmed mass. MR imaging showed a cyst-like mass in the right nasal cavity with secondary obstruction of a part of the right posterior ethmoid sinus. We thought that the mass was a massive, infected concha bullosa at the time of examination. A subsequent biopsy revealed a thin, bone-lined, hollow cavity filled with whitish mucopurulent material. A CT scan examined three months later revealed that this extraordinary spreading bullous concha originated from the inner aspect of the right superior turbinate and that the opening of the concha bullosa was the posterior ethmoid air cell. It was evident that the mass was in fact a superior concha bullosa. Nearly the entire wall of the superior concha bullosa was removed by endoscopic technique.