A mathematical model using computed tomography for the diagnosis of metastatic central compartment lymph nodes in papillary thyroid carcinoma
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- 作者：Tianrun Liu ; Xuan Su ; Weichao Chen ; Lie Zheng ; Li Li ; AnKui Yang
- 关键词：Papillary thyroid carcinoma ; Lymph nodes metastases ; Central compartment ; CT ; Mathematical model
- 刊名：European Radiology
- 出版年：2014
- 出版时间：November 2014
- 年：2014
- 卷：24
- 期：11
- 页码：2827-2834
- 全文大小：683 KB
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Xuan Su (2)
Weichao Chen (2)
Lie Zheng (2)
Li Li (2)
AnKui Yang (2)
1. The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
2. Sun Yat-sen University Cancer Center, 651 Dongfeng Road East, Guangzhou, China - ISSN：1432-1084
文摘
Objectives The purpose of this study was to establish a potential mathematical model for the diagnosis of the central compartment lymph node (LN) metastases of papillary thyroid carcinoma (PTC) using CT imaging. Methods 303 patients with PTC were enrolled. We determined the optimal cut-off points of LN size and nodal grouping by calculating the diagnostic value of each cut-off point. Then, calcification, cystic or necrotic change, abnormal enhancement, size, and nodal grouping were analysed by univariate and multivariate statistical methods. The mathematical model was obtained using binary logistic regression analysis, and a scoring system was developed for convenient use in clinical practice. Results 30?mm2 for LNs area (size) and two LNs as the nodal grouping criterion had the best diagnostic value. The mathematical model was: p-?e y /(1+ e y ), y--0.670-0.087?×?size--.010?×?cystic or necrotic change--.371?×?abnormal enhancement--.828?×?nodal grouping--.909?×?area. We assigned the value for cystic or necrotic change, abnormal enhancement, size and nodal grouping value as 25, 33, 20, and 22, respectively, yielding a scoring system. Conclusions This mathematical model has a high diagnostic value and is a convenient clinical tool. Key Points -Papillary thyroid carcinoma has a relatively high rate of metastasis. -CT has unique advantages in evaluating the central compartment. -The mathematical model can improve the diagnosis of CT imaging. -Corresponding scoring system is a convenient clinical tool.