鼻部多形性腺瘤的CT表现

CT manifestations of pleomorphic adenomas of nose

摘要:

目的探讨鼻部多形性腺瘤的CT表现，提高诊断准确性。方法回顾性分析4例经手术病理证实的鼻部多形性腺瘤患者CT表现并复习相关文献。其中男1例，女3例，年龄23～60岁，中位年龄47.5岁；全部患者均行鼻窦CT平扫，其中1例平扫后行增强扫描。结果4例鼻部多形性腺病患者中，1例位于鼻根部，3例位于鼻中隔前部，肿瘤大小为1～3 cm，病变形状1例呈椭圆形，3例呈类圆形，边界均清楚。CT平扫时病灶密度与邻近肌肉组织密度相等，密度不均匀，其中3例病变内部可见裂隙样低密度区，1例病变周围骨质呈轻微压迫性骨质吸收，其病灶内部可见斑点状钙化，增强扫描病灶未见明显强化。结论鼻部多形性腺瘤的CT表现有一定的特征性，有助于临床早期诊断及治疗方案的制定。

关键词:鼻腔鼻窦肿瘤|腺瘤|多形性|体层摄影术|X线计算机

Abstract:

ObjectiveTo study the computed tomography (CT) features of nasal pleomorphic adenomas for improving its diagnostic validity.MethodsCT manifestations of 4 patients with nasal pleomorphic adenomas confirmed pathologically were analyzed retrospectively with literature review. Of them, one was male and 3 were female. And their age ranged from 23 to 60 years old with a median age of 47.5. CT scan on the sinus was performed to all the patients, and contrastenhanced CT scan to one of them.ResultsThe tumor was located at the nasal root in one case and the anterior nasal septum in 3. Lesions ranged in the longest diameter from 1 cm to 3 cm. All the lesions had welldefined margin with ellipse shape in one case and roundlike in 3．Plain CT scan revealed intermediate density of the lesions which was equal to that of the adjacent muscle. Inhomogeneous density lesion with intratumoral cracklike lowdensity areas presented in 3 cases. Mild compression absorption of surrounding bone with intratumoral calcification was observed in one. Contrastenhanced CT showed no enhancement.ConclusionCT findings of nasal pleomorphic adenomas are of certain characteristics, which may contribute to early diagnosis and treatment decisions of this tumor.

Key words:Sinonasal neoplasm| Adenoma| pleomorphic| Tomography|X-ray computed