Table 3 Distribution of vascular invasion, local infiltration, differentiation grading and Ki-67 LI in relation to primary site (absolute number and % of patients)
Clinicopathologic features | Head &Necka | Bronchial | GEP | Pheochromocytoma | Unknown Primary | Total |
|---|---|---|---|---|---|---|
N = 44 | N = 16 | N = 156 | N = 6 | N = 24 | ||
Vascular invasion | 13 (28.2) | 5 (10.8) | 23 (50.0) | 2 (4.3) | 3 (6.5) | 46 (100.0) |
Local infiltration | 22 (24.4) | 6 (6.6) | 55 (61.1) | 2 (2.2) | 5 (5.5) | 90 (100.0) |
Differentiation grading | ||||||
G1 | 22 (16.6) | 10 (7.5) | 84 (63.6) | 4 (3.0) | 12 (9.0) | 132 (100.0) |
G2 | 18 (24.6) | 6 (8.2) | 42 (57.5) | 2 (2.7) | 5 (6.8) | 73 (100.0) |
G3 | 1 (4.7) | 0 (0) | 17 (80.9) | 0 (0) | 3 (14.2) | 21 (100.0) |
Ki-67 labelling index | ||||||
Ki-67 ≤ 2 | 34 (20.4) | 13 (7.8) | 104 (62.6) | 5 (3.0) | 10 (6.0) | 166 (100.0) |
Ki-67 3-20 | 3 (5.3) | 3 (5.3) | 39 (69.6) | 1 (1.7) | 10 (17.8) | 56 (100.0) |
Ki-67 > 20 | 0 (0) | 0 (0) | 3 (50.0) | 0 (0) | 3 (50.0) | 6 (100.0) |