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PA occlusion morphology (Jamieson disease classification).
| Type of PA Occlusion Morphology | Characteristics |
|---|---|
| Type 1 | The presence of a mural thrombus in the main PA or interlobar artery |
| Type 2 | Organized thrombus or intimal thickening on the central side of the regional artery |
| Type 3 | Intimal thickening or fibrotic tissue is present on the peripheral side of the regional artery |
| Type 4 | Lesions in the small arteries |
