Research Article

Dual S-100-AE1/3 Immunohistochemistry to Detect Perineural Invasion in Nonmelanoma Skin Cancers

Table 1

Detection of PNI on H&E and dual IHC staining.

Case numberTumor typePNI H&ENerve size (mm)PNI dual IHCNerve size (mm)Notes

1BCC
2BCC+0.01+0.04
3BCC
4BCC
5BCC+0.06
6BCC
7BCC
8BCC+0.08+0.06
9BCC+0.11+0.08
10BCC
11BCC
12BCC+0.14+0.15
13BCC
14BCC
15BCC+0.07+0.07
16BCC+0.02
17BCC
18SCC+0.18+0.11
19SCC+0.03
20SCC+0.04IHC staining more clearly demonstrated that tumor did not invade perineurium
21SCC
22SCC
23SCC
24SCC
25SCC
26SCC
27SCC
28SCC
29SCC
30SCC
31SCC
32SCC+0.03
33SCC+0.03
34SCC
35SCC+0.06Tissue block was cut through on sectioning for IHC
36SCC
37SCC+0.06
38SCC+0.04
39SCC+0.05+0.02
40SCC
41SCC
42SCC+0.05
43SCC+0.12
44SCC
45SCC

PNI: perineural invasion; H&E: hematoxylin and eosin; IHC: immunohistochemistry; BCC: basal cell carcinoma; SCC: squamous cell carcinoma.