鼻咽及鼻窦肌上皮癌的影像学特征

发布时间：2018-01-06 17:26

本文关键词：鼻咽及鼻窦肌上皮癌的影像学特征　出处：《临床放射学杂志》2017年02期 　论文类型：期刊论文

【摘要】：目的分析鼻咽及鼻窦肌上皮癌的影像学表现,探讨其诊断要点。方法回顾性分析经病理证实的11例鼻咽及鼻窦肌上皮癌的CT、MRI表现及临床资料。其中,4例行CT平扫和MRI平扫、DWI和动态增强扫描;3例仅行MRI平扫、DWI和动态增强扫描;4例仅行CT扫描。结果 11例肿瘤均位于单侧,肿瘤直径均2.3 cm,形态均不规则,与周围组织分界不清,大多伴有骨质破坏及邻近组织受累。8例CT检查结果示:肿瘤中心位于鼻咽部4例,上颌窦3例,鼻腔及同侧筛窦1例;病灶均呈不规则软组织密度肿块影;5例有明显周围骨质破坏,2例伴颈部淋巴结转移。行增强扫描的1例呈轻度强化。7例MRI检查结果示:肿瘤中心位于鼻咽部5例,上颌窦、筛窦各1例;在T_1WI上,4例呈等信号,3例呈低信号;在T_2WI上,7例均呈稍高或高信号,信号混杂。增强扫描示6例呈明显不均匀强化,1例呈明显均匀强化,1例颈部淋巴结环形强化。肿瘤的平均ADC值为(0.87±0.04)×10~(-3)mm~2/s。结论 CT和MRI能很好地显示鼻咽及鼻窦肌上皮癌的大小、部位、周围骨质破坏情况及与邻近组织的关系,CT示肿瘤邻近骨质易发生溶骨性破坏,MRI表现及ADC值也具有一定的特征性,有助于临床早期诊断及治疗方案的制定。
[Abstract]:Objective to analyze the manifestations of nasopharynx and paranasal sinus myoepithelial carcinoma image, to discuss the diagnosis. Methods: a retrospective analysis of 11 patients with pathologically confirmed nasopharyngeal and nasal myoepithelial carcinoma CT, MRI findings and clinical data. Among them, 4 cases underwent CT scan and MRI scan and dynamic enhanced DWI scan; 3 cases underwent MRI plain and dynamic enhanced DWI scan; 4 cases underwent CT scan. Results 11 cases of tumors were located in unilateral, tumor diameter were 2.3 cm, were irregular, and the tissue around the boundary is not clear, mostly associated with bone destruction and adjacent tissue involvement.8 cases of CT examination showed that the tumor is located in the center of the nasopharynx in 4 cases, 3 cases of maxillary sinus, 1 cases of nasal cavity and ipsilateral ethmoid sinus; lesions showed irregular soft tissue density mass; 5 cases had obvious damage to the surrounding bone, 2 cases with lymph node metastasis. 1 cases underwent enhanced scan showed mild enhancement of.7 cases of MRI examination showed that the tumors located in the heart of the nasopharynx 5 cases, Maxillary sinus, ethmoid sinus in 1 cases; in T_1WI, 4 cases showed signals, 3 cases showed low signal; in T_2WI, 7 cases showed slightly high or high signal, mixed signal. Enhanced scan, 6 cases showed inhomogeneous enhancement, 1 cases showed homogeneous enhancement, 1 cases of cervical lymph node circular enhancement. Average ADC value of the tumor (0.87 + 0.04) * 10~ (-3) mm~2/s. conclusion CT and MRI can well display the nasopharynx and paranasal sinus myoepithelial carcinoma size, location, bone destruction and the relationship with the adjacent tissues, CT showed the tumor adjacent bone is prone to osteolytic destruction, and manifestation of MRI the ADC value also has certain characteristics, the development will help to clinical early diagnosis and treatment plan.

【作者单位】：郑州大学第一附属医院磁共振科;
【分类号】：R739.6;R730.44;R445.2
【正文快照】： 作者单位:450052郑州大学第一附属医院磁共振科肌上皮癌(myoepithelial carcinoma,MEC)也称恶性肌上皮瘤(malignant myoepithelioma,MME),WHO于1991年在重版的《涎腺肿瘤的组织学分型》中提出此肿瘤类型[1]。MEC属罕见的恶性肿瘤,多见于大小涎腺,其发病率不超过所有涎腺肿瘤的

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