Fig. 1From: Advanced thyroid carcinomas: neural network analysis of ultrasonographic characteristicsFlow chart showing the recruitment of the study individuals. The number in parenthesis represents the number of patients. (TC: thyroid carcinoma, PTC: papillary thyroid carcinoma, FTC: follicular thyroid carcinoma, PDTC: poorly differentiated thyroid carcinoma, ATC: anaplastic thyroid carcinoma, pT1–4: histological tumor stage, M1: distant metastasis, RS: random selection)Back to article page