CT features and differential diagnosis of pleomorphic adenoma and adenolymphoma of the parotid gland(PDF)
《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]
- Issue:
- 2019年第3期
- Page:
- 301-306
- Research Field:
- 医学影像物理
- Publishing date:
Info
- Title:
- CT features and differential diagnosis of pleomorphic adenoma and adenolymphoma of the parotid gland
- Author(s):
- XIAO Yunyan1; LIU Min1; ZOU Hangyu1; DUAN Fudong1; ZHAO Yazhu1; LIU Yu2
- 1. Department of CT, the People’s Hospital of Xiangyun, Dali Bai Autonomous Prefecture 672100, China; 2. Department of Radiology, Shanghai Ninth People’s Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200011, China
- Keywords:
- Keywords: parotid gland; pleomorphic adenoma; adenolymphoma; computed tomography; contrast-enhanced scanning; differential diagnosis
- PACS:
- R445
- DOI:
- DOI:10.3969/j.issn.1005-202X.2019.03.011
- Abstract:
- Abstract: Objective To investigate the CT features of pleomorphic adenoma and adenolymphoma of the parotid gland and its differential diagnostic values for improving the accuracy of diagnosis. Methods The CT findings and clinical data of 16 cases of pleomorphic adenoma of the parotid gland and 7 cases of adenolymphoma of the parotid gland were analyzed retrospectively. Results The pleomorphic adenoma mostly occurred in middle age and located in the middle and upper part of the superficial parotid gland. Most of them were round with clear boundary and showed uniform or uneven density with cystic degeneration, necrosis and even calcification. After dynamic contrast-enhanced scanning, they showed progressive enhancement. Part of lesions had blood supply arteries, and the enhancement ranges of most lesions were enlarged on delayed phase. The adenolymphoma mostly occurred in elderly male patients and located in the lower part of the superficial parotid gland. Most of them were round with clear boundary and showed uniform or uneven density with cystic degeneration and necrosis. The dynamic contrast-enhanced scanning showed "fast forward and fast out". All lesions had blood supply arteries, and the enhancement ranges of most lesions were not enlarged on delayed phase. Significant differences were found in gender, age, lesion location, number of lesions, contrast-enhanced CT values, blood supply arteries and enhanced ranges between the two groups (P<0.05). However, there was no significant difference in smoking history, lesion size and density between the two groups (P>0.05). Conclusion The CT features of pleomorphic adenoma and adenolymphoma of the parotid gland are characteristic. Therefore, enhanced CT scanning is of great value in the differential diagnosis of pleomorphic adenoma and adenolymphoma in the parotid gland.
Last Update: 2019-03-25