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 number | Tumor type | PNI H&E | Nerve size (mm) | PNI dual IHC | Nerve size (mm) | Notes |
| 1 | BCC | − | | − | | | 2 | BCC | + | 0.01 | + | 0.04 | | 3 | BCC | − | | − | | | 4 | BCC | − | | − | | | 5 | BCC | + | 0.06 | − | | | 6 | BCC | − | | − | | | 7 | BCC | − | | − | | | 8 | BCC | + | 0.08 | + | 0.06 | | 9 | BCC | + | 0.11 | + | 0.08 | | 10 | BCC | − | | − | | | 11 | BCC | − | | − | | | 12 | BCC | + | 0.14 | + | 0.15 | | 13 | BCC | − | | − | | | 14 | BCC | − | | − | | | 15 | BCC | + | 0.07 | + | 0.07 | | 16 | BCC | − | | + | 0.02 | | 17 | BCC | − | | − | | | 18 | SCC | + | 0.18 | + | 0.11 | | 19 | SCC | − | | + | 0.03 | | 20 | SCC | + | 0.04 | − | | IHC staining more clearly demonstrated that tumor did not invade perineurium | 21 | SCC | − | | − | | | 22 | SCC | − | | − | | | 23 | SCC | − | | − | | | 24 | SCC | − | | − | | | 25 | SCC | − | | − | | | 26 | SCC | − | | − | | | 27 | SCC | − | | − | | | 28 | SCC | − | | − | | | 29 | SCC | − | | − | | | 30 | SCC | − | | − | | | 31 | SCC | − | | − | | | 32 | SCC | − | | + | 0.03 | | 33 | SCC | − | | + | 0.03 | | 34 | SCC | − | | − | | | 35 | SCC | + | 0.06 | − | | Tissue block was cut through on sectioning for IHC | 36 | SCC | − | | − | | | 37 | SCC | − | | + | 0.06 | | 38 | SCC | − | | + | 0.04 | | 39 | SCC | + | 0.05 | + | 0.02 | | 40 | SCC | − | | − | | | 41 | SCC | − | | − | | | 42 | SCC | − | | + | 0.05 | | 43 | SCC | − | | + | 0.12 | | 44 | SCC | − | | − | | | 45 | SCC | − | | − | | |
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PNI: perineural invasion; H&E: hematoxylin and eosin; IHC: immunohistochemistry; BCC: basal cell carcinoma; SCC: squamous cell carcinoma.
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