Table 1.
Morphologic Features, Architectural features and background stroma
| Pathologic Features | Number of cases with feature |
|---|---|
| Glandular pattern | |
| -Present | 42 |
| -Predominant | 15 |
| -Significant | 12 |
| -Minor | 15 |
| -Absent | 8 |
|
| |
| Papillae | |
| -Present | 36 |
| -Predominant | 14 |
| -Significant | 8 |
| -Minor | 14 |
| -Absent | 14 |
| Small rounded papillae present | 26 |
| -Predominant/Significant proportion of papillae | 23 |
| -Minor proportion of papillae | 3 |
| -with stromal hyalinization | 18 |
| -without stromal hyalinization | 8 |
| Papillary pattern NOS (other than small rounded papillae) are present | 35 |
|
| |
| Solid Pattern | |
| -Present | 27 |
| -Predominant | 9 |
| -Significant | 7 |
| -Minor | 11 |
| -Absent | 23 |
|
| |
| Cystic Pattern | |
| -Present | 16 |
| -Predominant | 2 |
| -Significant | 3 |
| -Minor | 11 |
| -Absent | 34 |
|
| |
| Frequency of Architectural Patterns and Pattern Combinations | |
| Exclusively papillary pattern | 3 |
| Exclusively solid pattern | 1 |
| Exclusively glandular pattern | 2 |
| Exclusively cystic pattern | 0 |
| Glandular and papillary patterns only | 7 |
| Glandular and papillary and solid patterns only | 12 |
| Glandular and papillary and solid and cystic patterns only | 3 |
| Glandular and papillary and cystic patterns only | 7 |
| Glandular and solid patterns only | 5 |
| Glandular and cystic patterns only | 4 |
| Papillary and solid patterns only | 4 |
| Papillary and cystic patterns only | 0 |
| Solid and cystic patterns only | 0 |
| Papillary and Solid and cystic patterns only | 0 |
| Glandular and solid and cystic patterns present | 2 |
|
| |
| Background stromal inflammation | |
| -Diffuse | 9 |
| -Sporadic or focal | 12 |
| -Absent | 29 |
|
| |
| Background stromal Hyalinization | |
| -Diffuse | 3 |
| -Sporadic or focal | 12 |
| -Absent | 35 |
|
| |
| Background stromal myxoid change | |
| -Diffuse | 3 |
| -Sporadic or focal | 3 |
| -Absent | 44 |