Table 1. Summary of immunohistochemical results of both cases.
Immunohistochemical stains | Clone | First case | Second case |
CD56 | 123C3 | + (focal) | - |
CD99 | O13 | + (diffuse and strong) | + |
Chromogranin | LK2H10) | + (focal) | - |
CK5/6 | D5/1684 | + | + |
CK7 | SP52 | - | - |
Ki67 | 30-9 | + (>20% of tumor cells) | Not done |
P16 | CINTecP16 | + (>75%) | + (focal) |
P63 | 4A4 | + (Diffuse) | + (diffuse) |
PGP 9.5 | 10-A1 | + | Not done |
Synaptophysin | SP11 | + (weak) | + (patchy) |