Table 3.
Comparison of various parameters among myoepithelial tumors
| Variables | ME | MECA | P value |
|---|---|---|---|
| Total cases | 6 | 9 | |
| Age range (Median) | 37(21, 60) | 51(32, 83) | 0.272 |
| Gender | 2:1 | 1:1.2 | |
| Male | 4(66.7) | 5(44.4) | 0.608 |
| Female | 2(33.3) | 4(55.6) | |
| Tumor cell type | 0.776 | ||
| Epithelioid | 4(66.67) | 4(44.44) | |
| Clear cell | 0(0) | 2(22.22) | |
| Mixed | 2(33.3) | 3(33.33) | |
| Architecture | 0.053 | ||
| Multinodular | 0(0) | 5(55.56) | |
| Sheet like | 5(83.33) | 4(44.44) | |
| Trabecular | 1(16.67) | 0(0) | |
| Tumor matrix | 1.000 | ||
| Hyalinized | 4(66.67) | 6(66.67) | |
| Myxoid | 2(33.33) | 3(33.33) | |
| Cytologic atypia | Mild | Moderate to marked | |
| Tumor borders | |||
| Invasive pattern (focal to extensive invasion) | 0 | 9 | |
| Circumscribed | 6 | 0 | |
| Necrosis | 0 | 7 | |
| Lymphovascular invasion | 0 | 2 | |
| Perineural invasion | 0 | 2 | |
| Mitosis/10 HPF (range) | 1–3 | 3–20 | |
| MIB-1 LI range (%) | 1–3 | 3–60 | |
| Prognosis |
4 NED and followed for 4, 44, 54 and 54 mo 0 DOD 0 REC 0 METS 2 LOF |
3 NED and followed for 19, 30 and 45 mo 2 DOD at 8 & 40 mo 4 REC 1 METS 3 LOF |
DOD died of disease, HPF high power field, LOF lost to followup, LI labelling index, ME myoepithelioma, MECA myoepithelial carcinoma, METS metastasis, mo months, NED no evidence of disease, REC recurrence