Research Article
Sporadic versus Radiation-Associated Angiosarcoma: A Comparative Clinicopathologic and Molecular Analysis of 48 Cases
Table 2
Histological comparison between SA and RAA.
| ā | Grade | Architecture | Depth of involvement (breast only) |
| SA () | High: 32/37 (86.5%) | V: 10/37 (27%) So: 8/37 (21.6%) Si: 5/37 (13.5%) S/E: 4/37 (10.8%) Other: 10/37 (27%) | Dermis: 1/5 (20%) Parenchyma: 4/5 (80%) |
| RAA () | High: 7/9 (77.8%) | V: 5/9 (55.6%) So: 1/9 (11.1%) S/E: 3/9 (33.3%) | Dermis: 4/5 (80%) Parenchyma: 1/5 (20%) |
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V: vasoformative, So: solid, Si: sieve, S/E: solid/epithelioid.
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