Table 4.
Histologic and molecular characteristics of PAs
| No. | Cellular a | PLGA1 | HMGA2 | CTNNB1 | FGFR1 |
|---|---|---|---|---|---|
| 1 | No | Rearranged | NP | Rearranged | Neg |
| 2 | No | Neg | Neg | NP | NP |
| 3 | No | Neg | Neg | NP | NP |
| 4 | No | Neg | Rearranged | NP | NP |
| 5 | No | Neg | Rearranged | NP | NP |
| 6 | No | Neg | Neg | NP | NP |
| 7 | No | Rearranged | NP | NP | NP |
| 8 | No | Rearranged | NP | Neg | NP |
| 9 | No | Rearranged | NP | Rearranged | NP |
| 10 | Yes | Rearranged | NP | NP | NP |
| 11 | Yes | Neg | Neg | NP | NP |
| 12 | Yes | Rearranged/C′ amp | NP | NP | Rearranged/T del |
| 13 | Yes | Neg | Neg | NP | NP |
| 14 | Yes | Neg | Neg | NP | NP |
| 15 | Yes | Neg | Neg | NP | NP |
| 16 | Yes | Neg | Neg | NP | NP |
Abbreviations: NP, not performed; Neg, negative; C′, centromeric; amp: amplified; T del, deletion of telomeric part.
a
Cellular PAs are predominantly monomorphic with a predominant 1 cell type with focal stromal matrix.