Table 1 Histological features
Histological features | No. of cases | % |
|---|---|---|
(Total no.: 61) | ||
Subtypes | ||
Fibrillary | 55 | 90.2 |
Gemistocytic | 5 | 8.2 |
Protoplasmic | 1 | 1.6 |
Cell density | ||
Low | 16 | 26.2 |
Moderate | 40 | 65.6 |
High | 5 | 8.2 |
Atypia | ||
Slight | 24 | 39.3 |
Moderate | 36 | 59.0 |
Severe | 1 | 1.6 |
Apoptoses | 27 | 44.3 |
Mitoses | ||
None | 41 | 67.2 |
One | 14 | 23.0 |
Two | 4 | 6.6 |
Three | 2 | 3.3 |
Rosenthal fibres | 2 | 3.3 |
Eosinophilic granular bodies | 0 | 0.0 |
Microcysts | 21 | 34.4 |
Myxoid matrix | 7 | 11.5 |
Microcalcification | 3 | 4.9 |
Perivascular lymphocytic infiltration | 11 | 18.0 |
Secondary structures | 40 | 65.6 |
Subpial | 12 | 19.7 |
Satellitosis | 41 | 67.2 |
Angiocentric growth | 13 | 21.3 |