Table 2 Clinical and pathologic characteristics of small pulmonary nodules for localization (N = 590).
Variables | n (%) |
---|---|
Total nodules | 590 |
Size, diameter, cm, median (range) | 0.7 (0.3–2.0) |
 0–0.5 | 103 (17.5) |
 0.6–1.0 | 412 (69.8) |
 1.1–1.5 | 67 (11.3) |
 1.6–2.0 | 8 (1.4) |
Nodule characteristics | |
 GGO | 474 (80.3) |
 Solid | 50 (8.5) |
 Semisolid | 66 (11.2) |
Location | |
 Right upper lobe | 188 (31.9) |
 Right middle lobe | 40 (6.8) |
 Right lower lobe | 129 (21.9) |
 Left upper lobe | 144 (24.4) |
 Left lower lobe | 89 (15.1) |
Depth of nodule from visceral pleura, cm, median (range) | 0.9 (0–6.0) |
Resection | |
 Wedge resection | 518 (87.8) |
 Segmentectomy | 67 (11.4) |
 Lobectomy | 5 (0.8) |
Pathological diagnosis | |
Adenocarcinoma of the lung | |
 Adenocarcinoma in situ | 93 (15.8) |
 Minimally invasive adenocarcinoma | 344 (58.3) |
 Invasive adenocarcinoma | 48 (8.1) |
Mucinous adenocarcinoma | 5 (0.8) |
Squamous cell carcinoma | 2 (0.3) |
Primary lung carcinoid | 1 (0.2) |
Lymphoepithelioma-like carcinoma | 1 (0.2) |
Metastatic lesions | 1 (0.2) |
Benign lesions | |
 Fibrosis scar tissue | 46 (7.8) |
 Granuloma | 24 (4.1) |
 Hamartoma | 4 (0.7) |
 Lymphoid hyperplasia | 11 (1.9) |
 Atypical adenomatous hyperplasia | 9 (1.5) |
 Sclerosing hemangioma | 1 (0.2) |