perivaskulair

Perivaskulair is a term used to describe tissue, structures, or processes that occur around a blood vessel. While it appears in some non-English medical texts as a direct rendering of the Latin-rooted phrase, the conventional English equivalent is perivascular. The spelling and usage vary by language, but the meaning remains around the vessel.

In anatomy, perivascular describes the immediate surrounding tissue around arteries, veins, or capillaries, including connective tissue, adipose tissue, nerves, and small vessels. In pathology, the adjective is used in phrases such as perivascular inflammation (perivasculitis), perivascular edema, and perivascular fibrosis, referring to reactions that occur in the perivascular space or tissue.

In radiology and neuroradiology, perivascular changes can be observed around vessels on imaging. Perivascular enhancement on MRI or CT can point to inflammation, infection, or neoplastic processes. In the brain, Virchow-Robin spaces are a well-known type of perivascular space. In ophthalmology, perivascular areas around retinal vessels may show changes in diseases such as retinopathy.

Related terms include perivascular space, perivascular adipose tissue, and the broader term perivasculature, the network of tissues surrounding blood vessels. The concept is important in anatomy, physiology, and pathology because the perivascular compartment participates in fluid exchange, immune surveillance, and vessel remodeling. The term perivaskulair is rarely used in English clinical writing; when clarity is needed, perivascular should be preferred.