Objective To discuss the value of X-ray diagnosis for desmoplastic fibroma of periosteum and significance in differential diagnosis.

目探讨骨膜硬性纤X线诊断价值及在鉴别诊断义。

Nasopharyngeal fibroma is a very rare, benign, soft tissue tumor.This disease almost always occurs in young men.It is also called polypoid fibroma or fibromatous polyp.

摘要鼻咽纤是非常罕见良性结缔组织肿，最常发生在年青男性，也称为息肉纤或纤息肉。

RESULTS The CTfeathures of ossifying fibroma inparanasal sinus were similar torotundity or unregular single high density lump in sinus, partarea of low density, integrity bone involucrum around it.

结果鼻窦骨化纤CT表现为鼻窦内单发类圆形或不规则性高密度肿块,部分区域可见低密度影,其周边出现完整骨性包壳,呈膨胀性生长,周边组织受压变形但分界清楚。