Table 3. Sebaceous gland carcinoma of the eyelid in 191 cases: histopathology features.
| Features | All patients (n=191) |
|---|---|
| Tumor differentiation (n=173) | |
| Well differentiated | 30 (17) |
| Moderately differentiated | 113 (59) |
| Poorly differentiated | 30 (17) |
| Tumor growth pattern (n=161) | |
| Lobular | 86 (53) |
| Comedo | 21 (13) |
| Papillary | 15 (9) |
| Mixed | 39 (24) |
| Mitotic activity (n=170) | |
| High | 114 (67) |
| Moderate | 48 (28) |
| Low | 8 (5) |
| Pagetoid involvement of the conjunctiva (n=180) | 92 (51) |
| Pagetoid involvement of the conjunctiva detected by map biopsy (n=129) | 21 (16) |
| Perivascular invasion (n=180) | 15 (8) |
| Perineural invasion (n=180) | 10 (5) |