Todayโs path rounds are on ๐ฆ๐๐ง๐ข๐ง๐ ๐ข๐จ๐ฆ๐๐ฌ! This post is inspired by one of my cases this week!
๐๐ก๐๐ญ ๐ข๐ฌ ๐ข๐ญ?
๐๐๐ง๐ข๐ง๐ ๐ข๐จ๐ฆ๐๐ฌ are tumours of the ๐ฆ๐๐ง๐ข๐ง๐ ๐๐ฌ, which are the fibrous layers covering the brain. Although these tumours are technically benign, they compress the brain causing pretty significant damage!
๐๐ก๐จ ๐ ๐๐ญ๐ฌ ๐ข๐ญ?
Any species can get this!
๐๐ก๐๐ญ ๐๐๐ฎ๐ฌ๐๐ฌ ๐ข๐ญ?
Like most tumours, the exact reason for development is unknown. They are actually the most common type of ๐ข๐ง๐ญ๐ซ๐๐๐ซ๐๐ง๐ข๐๐ฅ (within the braincase of the skull) tumour.
๐๐ก๐ฒ ๐ข๐ฌ ๐ญ๐ก๐ข๐ฌ ๐ ๐ฉ๐ซ๐จ๐๐ฅ๐๐ฆ?
As mentioned, these tumours compress the brain and can compromise its function. Depending on what portion of the brain is affected, the tumour can cause seizures, blindness, irregular gait, lethargy and behavioural changes.
๐๐จ๐ฐ ๐ข๐ฌ ๐ข๐ญ ๐๐ข๐๐ ๐ง๐จ๐ฌ๐๐?
These tumours can be diagnosed through specialized imaging, such as CT scans or MRI. At necropsy, they are easily identified when the brain is removed, as the mass is often adhered to the skull. Examining the brain itself will show a distorted shape where the mass was located.
๐๐ก๐จ๐ญ๐จ๐ฌ
1-3) Meningiomas pushing on the brain!
4-5) Some brains showing an irregular shape from meningioma compression.
6) Some meningiomas have a characteristic appearance under the microscope of whorling cells. These are called ๐ฉ๐ฌ๐๐ฆ๐ฆ๐จ๐ฆ๐ ๐๐จ๐๐ข๐๐ฌ. Pretty!
๐๐จ๐ฎ๐ซ๐๐๐ฌ
Maxie, G. Jubb, Kennedy and Palmerโs Pathology of Domestic Animals, Volume 1. Sixth Edition.
Photos 1-6 ยฉ Noahโs Arkive contributor Abdy, Leipold, Sagartz, Morris, Wright, Crowell licensed under CC BY-SA 4.0.
