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Table 2 Masaoka-Koga, TNM staging and histological diagnosis of patients

From: Primary thymus tumors: retrospective case analysis at a reference center in Latin America, 2011–2019

Masaoka-koga

(N = 17)

age I

13 (76.4%)

Stage II

0 (0%)

Stage III

1 (6.2%)

Stage IV

3 (17.6%)

TNM staging system

(N = 17)

Stage I (T1a,b N0M0)

13 (76.4%)

Stage II (T2N0M0)

1 (6.2%)

Stage IIIA (T3N0M0)

0 (0%)

Stage IIIB (T4N0M0)

0 (0%)

Stage IVA (Any T, N1M0/ Any TN0-1M1a)

0 (0%)

Stage IVB (Any T, N2M0-M1a/ Any T, Any N, M1b)

3 (17.6%)

Histological diagnosis

(N = 18)

Thymoma

13 (72.2%)

 Type A

4 (30.8%)

 Type AB

2 (15.4%)

 Type B1

6 (46.1%)

 Type B2

1 (7.7%)

Thymic neuroendocrine tumors

2 (11.1%)

Thymic carcinoma

1 (5.5%)

Thymolipoma

1 (5.5%)

Thymic cyst

1 (5.5%)