Appropriate Sublobar Resection Choice for Ground Glass Opacity-Dominant Clinical Stage IA Lung Adenocarcinoma

医学 磨玻璃样改变 楔形切除术 放射科 淋巴血管侵犯 恶性肿瘤 肺癌 淋巴结 腺癌 转移 切除术 阶段(地层学) 癌症 病理 外科 内科学 古生物学 生物
作者
Yasuhiro Tsutani,Yoshihiro Miyata,Haruhiko Nakayama,Sakae Okumura,Shuji Adachi,Masahiro Yoshimura,Morihito Okada
出处
期刊:Chest [Elsevier BV]
卷期号:145 (1): 66-71 被引量:289
标识
DOI:10.1378/chest.13-1094
摘要

Background The purpose of this multicenter study was to characterize ground glass opacity (GGO)-dominant clinical stage IA lung adenocarcinomas and evaluate prognosis of these tumors after sublobar resection, such as segmentectomy and wedge resection. Methods We evaluated 610 consecutive patients with clinical stage IA lung adenocarcinoma who underwent complete resection after preoperative high-resolution CT scanning and 18F-fluorodeoxyglucose PET/CT scanning and revealed 239 (39.2%) that had a > 50% GGO component. Results GGO-dominant tumors rarely exhibited pathologic invasiveness, including lymphatic, vascular, or pleural invasion and lymph node metastasis. There was no significant difference in 3-year recurrence-free survival (RFS) among patients who underwent lobectomy (96.4%), segmentectomy (96.1%), and wedge resection (98.7%) of GGO-dominant tumors (P = .44). Furthermore, for GGO-dominant T1b tumors, 3-year RFS was similar in patients who underwent lobectomy (93.7%), segmentectomy (92.9%), and wedge resection (100%, P = .66). Two of 84 patients (2.4%) with GGO-dominant T1b tumors had lymph node metastasis. Multivariate Cox analysis showed that tumor size, maximum standardized uptake value on 18F-fluorodeoxyglucose PET/CT scan, and surgical procedure did not affect RFS in GGO-dominant tumors. Conclusions GGO-dominant clinical stage IA lung adenocarcinomas are a uniform group of tumors that exhibit low-grade malignancy and have an extremely favorable prognosis. Patients with GGO-dominant clinical stage IA adenocarcinomas can be successfully treated with wedge resection of a T1a tumor and segmentectomy of a T1b tumor. The purpose of this multicenter study was to characterize ground glass opacity (GGO)-dominant clinical stage IA lung adenocarcinomas and evaluate prognosis of these tumors after sublobar resection, such as segmentectomy and wedge resection. We evaluated 610 consecutive patients with clinical stage IA lung adenocarcinoma who underwent complete resection after preoperative high-resolution CT scanning and 18F-fluorodeoxyglucose PET/CT scanning and revealed 239 (39.2%) that had a > 50% GGO component. GGO-dominant tumors rarely exhibited pathologic invasiveness, including lymphatic, vascular, or pleural invasion and lymph node metastasis. There was no significant difference in 3-year recurrence-free survival (RFS) among patients who underwent lobectomy (96.4%), segmentectomy (96.1%), and wedge resection (98.7%) of GGO-dominant tumors (P = .44). Furthermore, for GGO-dominant T1b tumors, 3-year RFS was similar in patients who underwent lobectomy (93.7%), segmentectomy (92.9%), and wedge resection (100%, P = .66). Two of 84 patients (2.4%) with GGO-dominant T1b tumors had lymph node metastasis. Multivariate Cox analysis showed that tumor size, maximum standardized uptake value on 18F-fluorodeoxyglucose PET/CT scan, and surgical procedure did not affect RFS in GGO-dominant tumors. GGO-dominant clinical stage IA lung adenocarcinomas are a uniform group of tumors that exhibit low-grade malignancy and have an extremely favorable prognosis. Patients with GGO-dominant clinical stage IA adenocarcinomas can be successfully treated with wedge resection of a T1a tumor and segmentectomy of a T1b tumor.
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