From: Stage-based treatment for thymoma in due consideration of thymectomy: a single-center experience and comparison with the literature
Masaoka
Total number
Biopsy
Neoadjuvant treatment
Sternotomy
VATS
Thoracotomy
Adjuvant radiation
Recurrence
Death
I
20
13
11
7
4
2
IIA
15
9
10
6
1
14
3
IIB
III
5
IVA
IVB