Large Vessel Vasculitis

Large vessel vasculitis (LVV) is the category of vasculitides that predominantly affects the aorta and its major branches. Its two principal forms are giant cell arteritis, typically a granulomatous arteritis of older adults often involving the cranial arteries, and Takayasu arteritis, which usually affects younger adults and the aorta and its primary branches. Inflammation of these large arteries can cause stenosis, occlusion, aneurysm, or dilatation.

Definition

Large vessel vasculitis is vasculitis affecting the aorta and its major branches more often than other vessels, comprising principally giant cell arteritis and Takayasu arteritis, per the 2012 Revised Chapel Hill Consensus Conference nomenclature.

Scope

The entry covers the definition and scope of LVV under the Chapel Hill nomenclature, the two main entities (giant cell arteritis and Takayasu arteritis), their characteristic vessel territories and histology, and how the 2022 ACR/EULAR criteria classify each for study. It is a reference topic and does not provide diagnostic or treatment instructions.

Core questions

• Which large arterial territories are involved, and what ischaemic or structural consequences follow?
• How do giant cell arteritis and Takayasu arteritis differ in age of onset, distribution, and histology?
• What do imaging modalities and temporal artery biopsy contribute to recognising LVV?
• How do classification criteria operationalise each entity for research?

Key concepts

• Granulomatous arteritis
• Giant cell (temporal) arteritis
• Takayasu arteritis
• Aorta and major branches
• Vascular stenosis, occlusion, and aneurysm
• Vessel-wall imaging
• Polymyalgia rheumatica overlap

Mechanisms

In LVV, inflammatory infiltrates centred on the arterial wall — often granulomatous, with multinucleated giant cells in giant cell arteritis — lead to intimal hyperplasia and luminal narrowing, producing ischaemia in the supplied territory, or to wall weakening with aneurysm and dilatation. Giant cell arteritis classically involves branches of the external carotid (including the temporal arteries) and may threaten vision through ophthalmic arterial involvement, while Takayasu arteritis affects the aorta and its primary branches, causing limb claudication, bruits, and blood-pressure discrepancies. Both can involve the aorta itself.

Clinical relevance

LVV is the reference example of vasculitis defined by large-artery involvement, and understanding its territories and histology informs how clinicians interpret imaging and biopsy findings described in the literature. This entry characterises the disease category for educational reference and is not a basis for individual diagnosis or treatment.

Epidemiology

Giant cell arteritis is the most common primary systemic vasculitis in adults over 50, with markedly higher incidence in populations of Northern European ancestry and a female predominance. Takayasu arteritis is far rarer, typically presenting before age 40 and with a strong female predominance, and is relatively more frequently reported in parts of Asia. Reported rates depend on the criteria and ascertainment used.

Evidence & guidelines

The 2012 Revised Chapel Hill Consensus Conference defines the category, the 2022 ACR/EULAR classification criteria operationalise giant cell arteritis and Takayasu arteritis for study, and the EULAR recommendations for the management of large vessel vasculitis summarise the evidence base. These documents frame how LVV is recognised and classified.

History

Temporal (giant cell) arteritis was described in the early twentieth century, and Mikito Takayasu reported the ocular findings of the arteritis later named after him in 1908. The Chapel Hill nomenclature grouped both under large vessel vasculitis, and the 2022 ACR/EULAR criteria provided contemporary, data-driven classification definitions for each.

Key figures

• Mikito Takayasu
• J. Charles Jennette
• Peter A. Merkel
• Cristina Ponte
• Bernhard Hellmich

Seminal works

• jennette-2012
• ponte-2022
• grayson-2022
• hellmich-2020

Frequently asked questions

What are the two main types of large vessel vasculitis?

Giant cell arteritis, typically affecting older adults and often the cranial arteries, and Takayasu arteritis, typically affecting younger adults and the aorta and its major branches.

Why is large vessel vasculitis grouped separately from other vasculitides?

Because it predominantly involves the aorta and its major branches, a distinct vessel-calibre pattern recognised by the Chapel Hill Consensus nomenclature, with characteristic granulomatous histology and large-artery complications such as stenosis and aneurysm.