Table 3. Pathological characteristics of patients with BSMPLA.

Variables	N (%)
Surgical types
Lobar-lobara	4 [7]
Lobar-sublobarb	28 [50]
Lobar-segmentectomy	18 [32]
Lobar-wedge resection	10 [18]
Sublobar-sublobarc	24 [43]
Segmentectomy-segmentectomy	8 [14]
Segmentectomy-wedge resection	6 [11]
Wedge resection-wedge resection	10 [18]
Pathology
AIS	22 [17]
MIA	48 [37]
IA	60 [46]
Tumor dimension (cm)
0< d ≤1	52 [40]
1< d ≤2	60 [46]
2< d ≤3	14 [11]
3< d ≤4	4 [3]
Most advanced TNM stage
Stage I	52 [93]
Stage II	2 [3.5]
Stage III	2 [3.5]
Largest pT
T1	52 [93]
T2	4 [7]
T3	0
Highest pN
N0	52 [93]
N1	2 [3.5]
N2	2 [3.5]

^a, lobar-lobar: bilateral lobectomy; ^b, lobar-sublobar: lobectomy with contralateral sublobar resection (anatomical segmentectomy or wedge resection); ^c, sublobar-sublobar: bilateral sublobar resections (anatomical segmentectomy or wedge resection). BSMPLA, bilateral synchronous multiple primary lung adenocarcinoma; AIS, adenocarcinoma in situ; MIA, minimally invasive adenocarcinoma; IA, invasive adenocarcinoma.