Cavernous hemangiomas are composed of large, dilated, blood-filled vessels lined by flattened endothelium. |
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A septal hematoma is a blood-filled cavity between the cartilage and the supporting perichondrium. |
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This procedure meant cutting directly into the back of the knee, tying the damaged artery above and below the aneurysm and scraping out the blood-filled sac. |
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