Table 3.

Comparison of chosen pathological parameters by age groups (≤18 years, ≥18 years).

Characteristic	Age ≤ 18 y, n = 16 (2,3%)	Age ≥ 18 y, n = 683 (97,7%)	P
Pathologic aggressiveness	9/15 (60%)	302/651 (46,4%)	P = 0,19
Capsule invasion/no clear border	4 (26%)	198 (30,4%)
Wider aggression	5 (34%)	104 (16%)
Multicentricity	6/15 (40%)	222/645 (34,4%)	P = 0,89
Ipsilateral lobe	2 (13%)	81 (12,5%)
Bilateral/contralateral lobe	4 (27%)	141 (21,9%)
Neck dissection	13/17 (76,5%)	300/674 (44,5%)	P = 0,005
Paratracheal	6 (35,3%)	200 (29,7%)
Paratracheal and lateral	7 (41,2%)	100 (14,8%)
Metastatic spread	10/13 (77%)	180/671 (26,8%)	P = 0,0000
Paratracheal	3 (23%)	92 (13,7%)
Paratracheal and lateral	7 (54%)	88 (13,1%)