Value of bronchogram sign on CT images in differentiating benign and malignant solid pulmonary nodules with maximum diameter ≤2 cm

• Published in: Lu jun jun yi da xue xue bao Vol. 44; no. 21; pp. 2206 - 2210
• Main Authors: ZHANG Chun, LI Qi, LYU Fajin, HUO Jiwen, HE Xiaoqun
• Format: Journal Article
• Language: Chinese
• Published: Editorial Office of Journal of Army Medical University 01.11.2022
• Subjects: bronchus; pulmonary nodule; tomography x-ray computer
• ISSN: 2097-0927
• DOI: 10.16016/j.2097-0927.202204065

Objective To investigate the relationship between solid pulmonary nodules with maximum diameter≤2 cm and the bronchi in order to provide more valuable clues to differentiate benign and malignant solid pulmonary nodules. Methods The clinical and CT data of 776 patients with solid pulmonary nodule at a maximum diameter of not larger than 2 cm confirmed by pathology in our hospital from January 2014 to January 2021 were analyzed retrospectively. According to pathological types, the patients were divided into malignant nodule group(n=340) and benign nodule group(n=436), and those with benign nodules were further assigned into inflammatory nodule subgroup(n=299) and benign tumor subgroup(n=137). Bronchogram sign on CT images were classified into 4 types according to the relationship between pulmonary nodules and bronchi. The incidence and types of different bronchogram sign on CT images were compared between malignant nodule group and benign nodule group, and between inflammatory nodule subgroup and benign tumor s