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Table 3 Vascular distributions and grade of three types of parotid gland tumors by CDFI

From: The diagnostic value of Superb Microvascular Imaging in identifying benign tumors of parotid gland

Pathological type n Vascular Distributions Vascular Grade
Avascular Peripheral Central Mixed Grade 0 Grade 1 Grade 2 Grade 3
PA 148 47 (31.8%) 45 (30.4%) 32 (21.6%) 24 (16.2%) 47 (31.8%) 46 (31.1%) 30 (20.3%) 25(16.9%)
BCA 18 3 (16.7%) 5 (27.8%) 4 (22.2%) 6 (33.3%) 3 (16.7%) 4 (22.2%) 5 (27.8%) 6 (33.3%)
WT 83 15 (18.1%) 20 (24.1%) 24 (28.9%) 24 (28.9%) 15 (18.1%) 23 (27.7%) 24 (28.9%) 21 (25.3%)
χ2   11.860 10.071
P value   0.07 0.122