| Author (Year） | Malignant Nodules (n = 364, 100%) | Benign Nodules (n = 373, 100%) | ||||||||
| Papillary carcinoma | Medullary carcinoma | Poor-differentiated carcinoma | Anaplastic carcinoma | Follicular carcinomas | Others* | Nodular goiters | Follicular adenoma | Granuloma | Others** | |
| Li (2015) | 27 | 1 | 4 | 2 | - | 1 | 71 | 15 | 1 | - |
| Gao (2016) | 25 | - | - | - | 1 | - | 5 | 5 | - | 17 |
| Cheng (2019) | 55 | 3 | - | 2 | 3 | - | 32 | 4 | 2 | - |
| He (2014) | 45 | - | - | - | - | - | 30 | - | - | - |
| Xue (2013) | 30 | - | - | 1 | 2 | - | 31 | 16 | - | - |
| Lee (2018) | 46 | - | - | - | - | - | 5 | 6 | - | 6 |
| Zhao (2015) | 60 | - | - | - | - | - | 25 | 5 | - | - |
| Zhang (2017) | 37 | 6 | - | - | 9 | 4 | 47 | 29 | - | 21 |
| Total | 325 (89.29%) | 10 (2.75%) | 4 (1.10%) | 5 (1.37%) | 15 (4.12%) | 5 (1.37%) | 246 (65.95%) | 80 (21.45%) | 3 (0.80%) | 44 (11.80%) |