Table 2 Pathologic characteristics between type 1 and type 2 papillary renal cell carcinoma
Type 1 | Type 2 | P | |
|---|---|---|---|
Foamy macrophages | |||
Yes | 20 (83.3%) | 16 (57.1%) | 0.041 |
No | 4 (16.7%) | 12 (42.9%) | |
Hemosiderin laden macrophages | |||
Yes | 20 (83.3%) | 27 (96.4%) | 0.261 |
No | 4 (16.7%) | 1 (3.6%) | |
Necrosis | |||
Yes | 11 (45.8%) | 18 (64.3%) | 0.182 |
No | 13 (54.2%) | 10 (35.7%) | |
Sarcomatoid differentiation | |||
Yes | 0 (0.0%) | 2 (7.1%) | 0.493 |
No | 24 (100.0%) | 26 (92.9%) | |
Eosinophils | |||
Yes | 7 (29.2%) | 18 (64.3%) | 0.012 |
No | 17 (70.8%) | 10 (35.7%) | |
Hyaline cells | |||
Yes | 12 (50.0%) | 18 (64.3%) | 0.299 |
No | 12 (50.0%) | 10 (35.7%) | |
Classic papillary architecture | |||
Yes | 23 (95.8%) | 28 (100.0%) | 0.462 |
No | 1 (4.2%) | 0 (0.0%) | |
Solid architecture | |||
Yes | 4 (16.7%) | 10 (35.7%) | 0.123 |
No | 20 (83.3%) | 18 (64.3%) | |
Tubular architecture | |||
Yes | 15 (62.5%) | 16 (57.1%) | 0.695 |
No | 9 (37.5%) | 12 (42.9%) | |
Perinephric/renal sinus fat invasion | |||
Yes | 3 (12.5%) | 8 (28.6%) | 0.157 |
No | 21 (87.5%) | 20 (71.4%) | |
Microvascular angiolymphatic invasion | |||
Yes | 1 (4.2%) | 9 (32.1%) | 0.028 |
No | 23 (95.8%) | 19 (67.9%) | |