Table 1. Summary of histopathological features of nine patients with eccrine porocarcinoma (EPC) from our institutions.
| Histopathological feature | Number (%) |
|---|---|
| Mature duct formation | 6 (66.7) |
| Necrosis (comedonecrosis/diffuse necrosis) | 6 (66.7) |
| Melanocytic colonization | 2 (22.2) |
| Differentiation | |
| Squamous | 5 (55.6) |
| Clear cell | 1 (11.1) |
| Spindle cell | 0 (0) |
| Mucus cell | 0 (0) |
| Associated benign component | |
| Eccrine poroma | 5 (55.6) |
| Hidroacanthoma simplex | 1 (11.1) |
| Epidermal nevus | 1 (11.1) |
| Perineural invasion | 0 (0) |
| Lymphovascular invasion | 0 (0) |