Table 3 Microscopic findings in ALK-RCC.
Case No. | Necrosis | Cytoplasmic vacuoles | Rhabdoid morphology | Sarcomatoid (spindle) cells | Signet-ring cells | MA morphology | Psammoma bodies | Mucin (background) | Original Diagnosis |
|---|---|---|---|---|---|---|---|---|---|
1 | − | + | + | + | + | − | + | + | uRCC |
2 | − | − | − | − | − | − | − | + | MTSC-RCC |
3 | − | − | − | − | − | 100% | − | − | MA |
4 | + | − | + | − | + | 5% | + | + | ALK-RCC |
5 | + | − | + | + | + | − | − | + | uRCC |
6 | − | + | − | − | − | − | − | + | uRCC |
7 | + | − | + | − | + | − | + | + | ALK-RCC |
8 | − | − | + | − | − | − | − | + | uRCC |
9 | + | + | + | − | − | − | + | + | ALK-RCC |
10 | − | − | − | − | − | − | + | − | ALK-RCC |
11 | − | + | − | − | + | − | − | + | uRCC |
12 | − | − | − | − | − | − | + | − | MA-like |
Percent pos* | 33% | 33% | 50% | 17% | 42% | 17% | 50% | 75% |
