鼻腔孤立性髓外浆细胞瘤的CT和MR成像
CT and MR imaging of solitary extramedullary plasmacytoma of the nasal tract.
作者信息
Ching Alex Sik-Chung, Khoo James Boon-Kheng, Chong Vincent Fook-Hin
机构信息
Department of Diagnostic Imaging, National Cancer Centre, Singapore, Singapore.
出版信息
AJNR Am J Neuroradiol. 2002 Nov-Dec;23(10):1632-6.
BACKGROUND AND PURPOSE
Solitary extramedullary plasmacytoma (SEP) is rare. The purpose of this study was to determine the CT and MR imaging features of SEP of the nasal tract.
METHODS
We retrospectively reviewed three CT and two MR images of three histologically proved cases in two men and one woman aged 43-66 years.
RESULTS
The plasmacytomas predominantly involved the nasopharynx in two cases and the nasal cavity in one. Two of the tumors were bulky solid masses, whereas the third showed infiltrative features. They were predominantly masses or infiltrative lesions with soft-tissue attenuation on CT scans. The lesions were isointense and hyperintense on T1- and T2-weighted MR images, respectively. The tumors revealed moderate-to-marked contrast enhancement and may have been associated with lytic bone destruction.
CONCLUSION
The imaging features of SEP are nonspecific. However, this entity should be included in the differential diagnosis of tumors in the nasopharynx and nasal cavity.
背景与目的
孤立性髓外浆细胞瘤（SEP）较为罕见。本研究旨在确定鼻腔SEP的CT和MR成像特征。
方法
我们回顾性分析了3例经组织学证实的病例的3份CT图像和2份MR图像，病例包括2名男性和1名女性，年龄在43 - 66岁之间。
结果
2例浆细胞瘤主要累及鼻咽部，1例累及鼻腔。其中2个肿瘤为较大的实性肿块，而第3个表现为浸润性特征。CT扫描显示它们主要为肿块或浸润性病变，呈软组织密度。在T1加权和T2加权MR图像上，病变分别呈等信号和高信号。肿瘤表现为中度至明显强化，可能与骨质溶解性破坏有关。
结论
SEP的影像学特征不具有特异性。然而，在鼻咽部和鼻腔肿瘤的鉴别诊断中应考虑到这种疾病。
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