Proximal bronchiolar adenoma with malignant transformation to invasive mucinous adenocarcinoma with 4 years follow-up: a case report and literature review - Yang, Yuan-Hui; Yin, Ke; Xu, Jia-Qi; Xu, Xiao-Ying; Zhang, Jun-Lei; Liu, Ji-Xuan; Feng, Xin-Zhi; Lin, Xiao-Yan (Frontiers in Oncology, 2025)