Head and Neck Imaging

CT Characteristics and Pathological Analysis of Tuberculosis in Parotid Gland*

Author:ZENG Chun, LI Xian, LI Yong-mei, et al.

affiliation:Department of Radiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, Sichuan Province, China

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Abstract

Objective To summarize the CT characteristics of tuberculosis in parotid gland, improving diagnostic accuracy of this disease. Methods 26 patients with tuberculosis in parotid confirmed by surgical pathology were analyzed retrospectively. All patients underwent preoperative CT plain scan and enhanced scan, comparing with the pathological results. Results (1) Location of the lesions: 23 cases were in one parotid gland and three cases were in both parotid glands. One case was diffuse lesion, 10 cases were single lesions, and 15 cases were multiple lesions. Eight cases involved the shallow lobes of parotid gland, 18 cases involved both the shallow and deep lobes. (2) Amount and morphology of lesions: A total of 56 lesions were found. Six lesions were nodular type and four were tumor type in 10 single lesions; 45 multiple lesions concluded 32 nodular type and 13 tumor type. (3) Density and enhancement forms of the lesions: Focal calcification was not found in all lesions. On CT plain scan, 18 cases showed homogeneous density, and eight cases were inhomogeneous density. On CT enhanced scan, moderate homogeneous enhancement was seen in six cases, ring enhancement was seen in 19 cases, diffuse enhancement was seen in one case. (4) Change of adjacent skin and lymph modes in neck: Thickening of skin around the parotid gland were found in 18 cases. Ipsilateral lmphadenectasis were found in carotid sheath, posterior triangle of the neck and sub maxillary region in 23 patients, bilateral lmphadenectasis were seen in three cases. Conclusion CT characteristics of tuberculosis presents diversity in parotid gland, relating pathological manifestation closely. Correct understanding characteristic CT performance of tuberculosis presents diversity in parotid gland is helpful for differential diagnosis, but final diagnosis still depend on laboratory results and pathological examination.

【Keyword】Parotid Disease; Tuberculosis; Pathology; Tomography; X-ray Computed

【Chart number】R816.96

【Document Identification Number】A

【DOI】10.3969/j.issn.1672- 5131.2016.02.001

Introduction