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Development and validation of diagnostic prediction model for solitary pulmonary nodules
Author(s) -
YONEMORI Kan,
TATEISHI Ukihide,
UNO Hajime,
YONEMORI Yoko,
TSUTA Koji,
TAKEUCHI Masahiro,
MATSUNO Yoshihiro,
FUJIWARA Yasuhiro,
ASAMURA Hisao,
KUSUMOTO Masahiko
Publication year - 2007
Publication title -
respirology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.857
H-Index - 85
eISSN - 1440-1843
pISSN - 1323-7799
DOI - 10.1111/j.1440-1843.2007.01158.x
Subject(s) - medicine , receiver operating characteristic , radiology , solitary pulmonary nodule , radiography , carcinoembryonic antigen , diagnostic accuracy , medical diagnosis , logistic regression , diagnostic model , computed tomography , cancer , data mining , computer science
Background and objective: The aim of this study was to develop a simple prediction model for the underlying diagnosis of solitary pulmonary nodules (SPN) based on clinical characteristics and thin‐section CT findings. Methods: Retrospective analysis was carried out on 452 patients with SPN (113 benign and 339 malignant) smaller than 30 mm, who underwent thin‐section CT followed by surgical resection and histological diagnosis. The clinical characteristics were collected from medical records, and radiographic characteristics from thin‐section CT findings. The prediction model was determined using multivariate logistic analysis. The prediction model was validated in 148 consecutive patients with undiagnosed SPN, and the diagnostic accuracy of the model was compared with that of an experienced chest radiologist. Results: The prediction model comprised the level of serum CRP, the level of carcinoembryonic antigen, the presence or absence of calcification, spiculation and CT bronchus sign. The areas under the receiver‐operating characteristic curve in training and validation sets were 0.966 and 0.840, respectively. The diagnostic accuracies of the prediction model and the experienced chest radiologist for the validation set were 0.858 and 0.905, respectively. Conclusion: The simple prediction model consisted of two biochemical and three radiographic characteristics. The diagnostic accuracy of an experienced chest radiologist was higher compared with the prediction model.