Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Aneurysm wall type classification (adapted from Frösen et al. [21])
| Wall type | Histological observations |
|---|---|
| A | Endothelialized wall and linearly organized smooth muscle cells |
| B | Thickened wall with disorganized smooth muscle cells |
| C | Hypocellular wall with either intimal hyperplasia or organized luminal thrombosis |
| D | Extremely thin thrombosis-lined hypocellular wall |
