摘要
目的 探讨鼻石的CT表现 ,评价CT的诊断价值。方法 回顾性分析 9例经手术病理证实的鼻石 ,均经过CT检查 ,主要临床表现包括脓涕和鼻塞。结果 9例均为右侧鼻腔发病 ,其中7例位于下鼻道 ,2例位于中鼻道 ;2例见 2个病灶 ,其余 7例均为单发病灶 ;最大病灶约 5 0cm×3 8cm。8个病灶中心见低密度的核心 ,外围为高密度影 ,手术证实为沉积的无机盐 ,CT值均在10 0 0HU以上 ;其余 3个病灶为均匀高密度影。主要的继发改变包括上颌窦炎、鼻腔扩大、鼻中隔偏曲、鼻中隔穿孔和邻近骨质受压、变薄、硬化。结论 CT可准确显示鼻石的位置、大小、数目、密度 ,也可清晰显示其并发症 ,有助于鼻石的诊断和鉴别诊断 。
Objective To study the CT features of rhinolith and to evaluate its CT diagnostic value. Methods Nine cases of rhinolith proved by operation and pathology were retrospectively analyzed. The main clinical findings of patients with rhinolith included purulent discharge and nasal obstruction. Results On CT scans, all the lesions originated in right nasal cavity. In 7 cases the lesions were found in the inferior nasal meatus, in the other 2 cases they were found in the middle nasal meatus. The lesion was monostotic in 7 cases, and double foci were found in 2 cases. All the lesions showed well defined but not sharp borders and varied in shapes. The maximum size of the lesions was approximately 5 0 cm×3 8 cm. Eight lesions showed low density in central region as the nidus and high density in peripheral region due to the deposition of mineral salts (CT value >1 000 HU) which were confirmed by operation. The other 3 lesions were of homogeneous high attenuation. CT also demonstrated complications such as maxillary sinusitis, expansion of the nasal cavity, deviation or perforation of the nasal septum, and compression, thinning, and sclerosis of the adjacent bone. Conclusion CT may accurately demonstrate the site, size, number, and density of the rhinoliths as well as its complications. HRCT findings may aid the diagnosis and differential diagnosis of rhinoliths and may help to select the optimal operating approach.
出处
《中华放射学杂志》
CAS
CSCD
北大核心
2003年第4期341-343,共3页
Chinese Journal of Radiology
