The diagnostic value of Superb Microvascular Imaging in identifying benign tumors of parotid gland
- PDF / 9,383,707 Bytes
- 10 Pages / 595.276 x 790.866 pts Page_size
- 84 Downloads / 186 Views
RESEARCH ARTICLE
Open Access
The diagnostic value of Superb Microvascular Imaging in identifying benign tumors of parotid gland Lihui Zhao1†, Yiran Mao1†, Jie Mu1, Jing Zhao1, Fangxuan Li2, Sheng Zhang1*
and Xiaojie Xin1
Abstract Background: We compared the ultrasound features, superb microvascular imaging (SMI) and micro vessel density (MVD) of pleomorphic adenoma (PA), Warthin’s tumor (WT) and basal cell adenoma (BCA) to explore the clinic value of SMI in differential diagnosis of benign tumors of parotid gland. Methods: The vascular distributions and grade by color doppler flow imaging (CDFI) and SMI, as well as vascular index (VI) of 249 parotid gland masses from 217 patients were analyzed. Results: The internal echogenicity of BCA are more homogeneous in comparing with WT and PA(P < 0.05). By SMI, the vascular distribution and vascular grade in PA were mainly peripheral (33.1%) and avascular (25.7%), Grade 1 (27.8%) and Grade 0 (25.7%). WT were mainly central (31.3%) and mixed distribution (34.9%), in Grade 3 (37.3%) and Grade 2 (36.2%). BCA was mainly peripheral (33.3%) and mixed distribution (33.3%), in Grade 2 (33.3%) and Grade 3 (33.3%). The overall detection rate of SMI for vascular Grade 2 and 3 was significantly higher than that of CDFI (P < 0.05). Both VI and MVD were lowest in PA, highest in WT (P < 0.001). The VI by SMI was correlated with MVD (P < 0.001). The correlation index between vascular distribution and grade by SMI and MVD were significantly higher than CDFI. Conclusion: SMI can provide low-velocity blood flow information, which is helpful for the differential diagnosis of common benign tumors of parotid gland, and is expected to be more widely used. Keywords: Superb microvascular imaging, Parotid gland tumors, Pleomorphic adenoma, Warthin’s tumor, Basal cell adenoma
Background Parotid gland tumors account for 3–6% of head and neck tumors [1]. 80% parotid gland tumors are benign tumors, in which pleomorphic adenoma (PA), Warthin’s tumor (WT) and basal cell adenoma (BCA) account for the top three [2]. Different types of parotid gland tumors have different biological behaviors; therefore, different * Correspondence: [email protected]; [email protected] † Lihui Zhao and Yiran Mao contributed equally to this work. 1 Department of Ultrasound, Tianjin Medical University Cancer Institute and Hospital; National Clinical Research Center for Cancer, China; Key Laboratory of Cancer Prevention and Therapy, Tianjin;Tianjin’s Clinical Research Center for Cancer, Binshuixi Road, Hexi District, Tianjin 300060, China Full list of author information is available at the end of the article
types of parotid gland tumors have different operation principle. PA has complex components, often presents multicenter growth, tends to infiltrate into the surrounding tissues and may recur after resection. Additionally, 2–25% PA has malignant tendency. In order to ensure the complete resection of tumors, reserve normal tissues maximumly and reduce recurrence and postoperative complications, tumor resection inc
Data Loading...
