Table 2. Summary of pathological features of 32 patients with MCA.
| Case/reference | Gross appearance | IDC | DCIS | ER/PR/HER2 | Ki67 | CK7/CK20 | MUC1/MUC5AC/MU6 |
|---|---|---|---|---|---|---|---|
| 1 (1) | Solid and cystic | − | − | −/−/NA | 40% | +/− | NA |
| 2 (1) | Cystic | − | + | −/−/NA | 30% | +/− | NA |
| 3 (1) | Solid and cystic | − | + | −/−/NA | 70% | +/− | NA |
| 4 (1) | Solid, gray-brown | − | − | −/−/NA | 50% | +/− | NA |
| 5 (4) | Well-defined cystic | − | + | −/−/− | 50% | +/− | NA |
| 6 (5) | Solid and cystic | − | + | −/−/− | 50% | +/+ | +/+/− |
| 7 (6) | Solid and cystic | − | − | −/−/− | NA | +/− | NA |
| 8 (7) | Solid and cystic | + | + | −/−/− | 80% | +/− | NA |
| 9 (8) | Cystic | − | + | −/−/− | NA | +/− | NA |
| 10 (8) | Cystic | − | + | −/−/− | NA | +/− | NA |
| 11 (9) | Multilocular cystic | − | − | −/−/− | 10% | +/− | NA |
| 12 (10) | Irregular, solid and firm | − | + | −/−/2+ | 5% | +/− | +/+/− |
| 13 (11) | Solid and cystic | − | − | −/−/− | 30% | +/− | NA |
| 14 (12) | Solid and cystic | + | + | NA | NA | NA | NA |
| 15 (13) | Solid and cystic | + | + | −/−/− | 40% | +/− | NA |
| 16 (14) | Solid and cystic | − | + | +/+/− | NA | NA | NA |
| 17 (15) | Multilocular cystic | − | − | −/−/− | 35% | +/− | NA |
| 18 (16) | Cystic | + | + | −/−/− | 20.5% | +/focally+ | NA |
| 19 (17) | Unilocular cystic | + | + | −/−/− | >90% | +/− | NA |
| 20 (18) | Unilocular cyst | − | + | −/−/− | NA | +/− | NA |
| 21 (19) | Well-defined multilobular cystic | − | − | +95%/−/− | NA | −/− | NA |
| 22 (20) | Lobulated cystic | − | + | −/−/2+ | NA | +/− | NA |
| 23 (21) | Solid and cystic | − | + | −/−/2+ | 30% | +/− | NA |
| 24 (22) | Multilocular cystic | − | − | −/−/3+ | NA | NA | NA |
| 25 (22) | Solid and cystic | − | − | −/−/− | NA | NA | NA |
| 26 (23) | Multilocular cystic | − | − | NA/NA/NA | 21.8% | +/− | NA |
| 27 (24) | Multilocular cystic | − | − | −/−/NA | NA | +/− | NA |
| 28 (25) | Unilocular cystic | − | − | −/−/− | NA | +/− | NA |
| 29 (26) | Solid and cystic | − | − | −/−/− | NA | +/− | NA |
| 30 (27) | Solid and cystic | − | − | −/−/− | NA | +/− | NA |
| 31 (28) | Solid and cystic | − | + | −/−/− | 60% | +/− | NA |
| Our case | Well-defined multilobular cystic | + | + | −/−/− | 40% | +/− | +/focally+/− |
+, positive; −, negative. MCA, mucinous cystadenocarcinoma; IDC, invasive ductal carcinoma; DCIS, ductal carcinoma in situ; ER, estrogen receptor; PR, progesterone receptor; NA, not available.