鼻腔恶性肿瘤的CT诊断

目的　探讨鼻腔恶性肿瘤的CT影像学特征。方法　将 41例经病理证实的鼻腔恶性肿瘤分为 2组 ,对其CT表现进行回顾性分析。结果　 2 0例鼻腔非何杰金氏淋巴瘤 (NHL)中 ,17 2 0病变起源于鼻前庭或鼻前部 ,16 2 0鼻翼鼻背受侵 ,19 2 0病灶密度均匀 ,17 2 0骨质无异常或骨质呈虫蚀状或虚线样吸收。 2 1例鼻腔其它恶性肿瘤中 ,11 2 1全鼻道受侵 ,12 2 1双侧鼻腔受侵 ,17 2 1密度不均匀 ,16 2 1骨质破坏。结论　鼻腔NHL与鼻腔其它恶性肿瘤有明显不同的CT影像表现 ,其中病变密度、骨质改变、鼻翼鼻背受侵在统计学上有显著差异

CT Diagnosis of Primary Malignant Tumors of Nasal Cavity

Objective To evaluate the CT image charact eristics of primary malignant tumors of nasal cavity.Methods 41 cases of primary malignant tumors of nasal cav ity were all pathologically proved and divided into two groups. Their CT manifes tations were analyzed respectively. Results In 20 cases of Non-Hodgkins lymphoma (NHL) of nas al cavity, 17/20 cases originate in nasal vestibule or behind nasal bone. Extern al nose skin of 16/20 cases was infiltrated.Density of 19/20 cases was relativel y homogeneous. No bone structure destruction or only slight bony erosion charact erized by mouse nibbled and broken line absorption was found in 17/20 cases. In 21 cases of other primary malignant tumors, nasal channels of 11/21 cases were i nfiltrated throughout. Both left and right nasal chennels of 12/21 cases were infiltrated . Density of 17/21 cases was inhomogeneous. Bone destruction was fou nd in 16/21 cases.Conclusion The CT manifestations of nasal cavity NHL and other primary malignant tumors are obviously different. The lesions density, des truction of bone structure and external nose skin hes clear statistical meaning.