鼻腔及鼻窦内翻性乳头状瘤的CT和MRI表现
CT and MRI findings of sinonasal inverted papilloma
王春宇1
作者信息
- 1. 阜新市第二人民医院妇产医院CT室,辽宁阜新123000
- 折叠
摘要
目的 探讨鼻腔及鼻窦内翻性乳头状瘤的CT和MRI表现特点.方法 回顾性分析17例经手术病理证实的鼻腔及鼻窦内翻性乳头状瘤的CT和MRI资料,17例均行CT平扫及三位重建,7例行MRI平扫及增强.结果 17例均为单侧发病,累及鼻腔外侧壁2例,累及鼻腔及鼻窦15例,其中1例恶变为鳞癌.16例良性病灶呈条块状、菜花状,游离缘呈小波浪状,沿鼻固有结构匍匐生长;CT上病灶呈均匀的中等密度,骨质受压变形13例,局部骨质增生肥大5例,骨质吸收3例;中下鼻甲受压移位11例,上颌窦口开大5例;MRI上呈等T1、等-稍高混杂T2信号,不均匀强化,T2及增强T1呈栅栏状3例;呈等-低T1、等-高T2混杂信号、不均匀强化,T2和增强T1呈卷曲脑回状2例;等T1、等T2信号、中等均匀强化1例.1例恶变病例呈球形,边缘呈分叶状,可见骨质侵袭破坏,信号混杂,缺少栅栏状及卷曲脑回样强化.结论 匍匐性膨胀性生长、小波浪状边缘是鼻腔及鼻窦内翻性乳头状瘤的形态特征,CT呈均匀软组织密度,常伴骨质受压改变,T2WI和增强T1WI呈栅栏状、卷曲脑回状是其典型MRI表现.骨质侵袭破坏,信号混杂,缺少栅栏状及卷曲脑回状强化提示恶性可能.
Abstract
Objective To investigate CT and MRI findings of sinonasal inverted papilloma.Methods Seventeen patients with SNIP that were confirmed by surgery and pathology were retrospectively analyzed.All of them underwent non-contrast CT with muti-planar reformation,seven contrast-enhanced MR imaging.Results All of the 17 patients were unilateral,involving the lateral nasal wall in 2 cases,involving the nasal cavity and sinuses in 15 cases,including 1 case of malignant change.The 16 cases of benign lesions showed as strips,cauliflower,with a small wavy surface,and creeping along with the inherent structure.On CT scan,all 17 lesions showed medium density,with bone displacement in 13 cases,hyperplasia in 5 cases,absorption in 3 cases,and enlargement of opening of the maxillary sinus in 5 cases.On MRI,the lesions showed medium T1 signal,medium-slightly hyper mixed T2 signal and fence-like pattern enhancement in 3 cases;medium-hypo mixed T1 signal,medium-hyper mixed T2 signal,and convoluted cerebriform pattern enhancement in 2 cases;medium T1,medium T2 and moderate enhancement in 1 case.The malignant change lesion showed spherical,lobulated,rim visible bone invasion damage,mixed signals,lack of fence-like or convoluted cerebriform pattern reinforcement.Conclusion Diffuse Creeping growth and small wavy edge is the sinonasal inverted papilloma morphological characteristics;CT shows medium density,usually with bony changes;Fence-like or convoluted cerebriform pattern on MR T2WI or enhanced TlWI is typical finding.
关键词
鼻肿瘤/鼻窦肿瘤/乳头状瘤,内翻/体层摄影术,X线计算机/磁共振成像Key words
Nose neoplasms/Paranasal sinus neoplasms/Papilloma, inverted/Tomography, X-ray computed/Magnetic resonance imaging引用本文复制引用
出版年
2016
NETL
NSTL
维普
万方数据