Which organ systems are classically involved in granulomatosis with polyangiitis?

Upper respiratory tract, lungs and kidneys The disease is a necrotizing granulomatous small- to medium-vessel vasculitis that classically targets the upper airway, lungs and kidneys.

Heart valves, spleen and thyroid

Central nervous system, pancreas and marrow

Which serological pattern is characteristic of granulomatosis with polyangiitis?

c-ANCA directed against proteinase 3 A cytoplasmic ANCA pattern with anti-proteinase 3 specificity is present in the majority of patients with active systemic disease and is central to diagnosis and monitoring.

p-ANCA directed against myeloperoxidase

Anti-double-stranded DNA antibodies

Anti-cyclic citrullinated peptide antibodies

What should the finding of necrotizing scleritis prompt in any patient?

Screening for an underlying systemic vasculitis Necrotizing scleritis is strongly associated with systemic vasculitis, of which granulomatosis with polyangiitis is among the most important causes, so it should trigger a systemic search.

Topical corticosteroid drops as primary treatment

Empirical antibiotic cover for infectious scleritis

Observation until the inflammation settles

Which corneal complication of granulomatosis with polyangiitis carries a high risk of perforation?

Band keratopathy across the interpalpebral zone

Bullous keratopathy from endothelial failure

Recurrent corneal epithelial erosion

How does orbital involvement in granulomatosis with polyangiitis differ from idiopathic orbital inflammation?

It is more destructive and less responsive to steroids Granulomatous orbital inflammation in this disease tends to be more destructive and less steroid-responsive, frequently requiring more aggressive systemic immunosuppression.

It is painless and usually self-limiting

It characteristically spares the optic nerve

It resolves fully with a short oral steroid course

What provides the most definitive confirmation of granulomatosis with polyangiitis?

Biopsy showing necrotizing granulomatous vasculitis Tissue from an affected site such as sinus, lung or kidney showing necrotizing granulomatous vasculitis is the most definitive confirmation, though a classic picture with positive ANCA often suffices to start treatment.

A positive c-ANCA titre in isolation

Cavitary pulmonary nodules on chest CT

The presence of bilateral necrotizing scleritis

Which systemic testing is essential in suspected granulomatosis with polyangiitis?

Echocardiography for valvular vegetations

Nerve conduction studies of the limbs

Serum immunoglobulin electrophoresis

What distinguishes relapsing polychondritis from granulomatosis with polyangiitis as a cause of scleritis?

Inflammation of ear and nasal cartilage Relapsing polychondritis causes scleritis alongside cartilage inflammation of the ear and nose, rather than the sinonasal and renal pattern that characterises granulomatosis with polyangiitis.

A strongly positive proteinase 3 ANCA

Prominent asthma with blood eosinophilia

An established history of joint disease

What is required to control necrotizing scleritis in granulomatosis with polyangiitis?

Systemic immunosuppression for remission induction Topical treatment alone is inadequate; corticosteroids with cyclophosphamide or rituximab are used for remission induction, since the eye will not settle until the systemic vasculitis is controlled.

Intensive topical corticosteroid drops alone

Subconjunctival corticosteroid injection

Topical ciclosporin with frequent lubricants

What is the outlook for untreated systemic granulomatosis with polyangiitis?

High mortality within the first year, mainly renal and pulmonary Untreated disease historically carried high first-year mortality driven by renal and pulmonary involvement, an outlook transformed by modern immunosuppressive regimens.

Spontaneous remission in most patients within a year

Slow progression over decades with low mortality

Mortality driven chiefly by ocular perforation

Granulomatosis with Polyangiitis: When Scleritis Is a Systemic Emergency

Granulomatosis with polyangiitis, formerly called Wegener’s granulomatosis, is a systemic small-vessel vasculitis affecting the respiratory tract and kidneys, and the eye is involved often enough that ophthalmic disease is sometimes the presenting feature that leads to the systemic diagnosis, not simply a complication that follows it.

Necrotizing scleritis is the finding most closely associated with this disease, and it carries real urgency: scleritis of this severity, left inadequately treated, can perforate the globe, and the systemic vasculitis behind it can be fatal without appropriate immunosuppression.

Systemic Disease Overview

Granulomatosis with polyangiitis is characterised by necrotizing granulomatous inflammation and vasculitis affecting small to medium vessels, classically involving the upper respiratory tract, lungs, and kidneys.

ANCA-associated vasculitis, most often with a cytoplasmic (c-ANCA) pattern targeting proteinase 3, is present in the majority of patients with active systemic disease, and its identification is a central part of both diagnosis and disease monitoring.

Ocular Manifestations

Necrotizing Scleritis

Severe, often bilateral scleritis with a tendency toward scleral necrosis and thinning is one of the most characteristic and sight-threatening ocular manifestations, and necrotizing scleritis in any patient should prompt screening for an underlying systemic vasculitis, of which this is among the most important causes.

Peripheral Ulcerative Keratitis

Progressive, crescentic thinning and ulceration of the peripheral cornea can occur alone or alongside scleritis, and when severe is associated with significant risk of perforation, making it one of the more urgent ocular presentations in this disease.

Orbital Pseudotumour

Granulomatous orbital inflammation can cause proptosis, restricted eye movement, and compressive optic neuropathy, and orbital involvement in this disease is often more destructive and less steroid-responsive than idiopathic orbital inflammation, frequently requiring more aggressive systemic immunosuppression.

Other Findings

Nasolacrimal duct obstruction from involvement of the nasal mucosa, uveitis, and retinal vasculitis are all described, and any combination of ocular inflammation alongside sinonasal or pulmonary symptoms should raise suspicion for this diagnosis.

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Systemic Findings

Upper respiratory tract involvement, including chronic sinusitis, nasal crusting, epistaxis, and, in severe cases, saddle nose deformity from cartilage destruction
Pulmonary involvement, including nodules, cavitary lesions, and pulmonary haemorrhage
Renal involvement, classically a rapidly progressive glomerulonephritis, which is a major driver of morbidity and mortality if untreated
Constitutional symptoms, including fever, weight loss, and malaise, common at presentation

Diagnostic Evaluation

ANCA testing, specifically c-ANCA with anti-proteinase 3 specificity, supports the diagnosis in the appropriate clinical context, though a negative result does not fully exclude the disease, particularly in limited or localised presentations.

Tissue biopsy, from an affected site such as the sinuses, lung, or kidney, showing necrotizing granulomatous vasculitis provides the most definitive confirmation, though a compatible clinical picture with positive ANCA serology is often sufficient to begin treatment without biopsy when the presentation is classic.

Renal function testing and urinalysis for proteinuria or haematuria are essential given the frequency and seriousness of renal involvement, and CT imaging of the chest and sinuses helps characterise the extent of systemic disease.

Differential Diagnosis

Rheumatoid arthritis-associated scleritis, generally occurring in a patient with an established history of joint disease rather than as a first presentation of systemic vasculitis
Other ANCA-associated vasculitides, including microscopic polyangiitis and eosinophilic granulomatosis with polyangiitis, distinguished by their own characteristic organ involvement patterns and, in the latter, prominent asthma and eosinophilia
Relapsing polychondritis, which can cause scleritis alongside cartilage inflammation elsewhere, distinguished by involvement of the ear and nasal cartilage rather than the sinonasal and renal pattern of GPA
Infectious scleritis, generally with a relevant history of trauma or surgery and a different, more localised clinical course

Management

Systemic Immunosuppression

Treatment of the underlying systemic vasculitis, typically with corticosteroids combined with cyclophosphamide or rituximab for remission induction, followed by maintenance immunosuppression, is essential and is managed jointly with rheumatology, since the ocular disease will not resolve without control of the underlying systemic process.

Local Ocular Treatment

Topical treatment alone is inadequate for necrotizing scleritis or peripheral ulcerative keratitis in this disease; systemic immunosuppression is required, with topical lubrication and cycloplegia used as adjuncts for comfort rather than as primary therapy.

Surgical Considerations

Impending or actual scleral or corneal perforation may require surgical reinforcement with a patch graft, and any surgery should ideally be undertaken once systemic inflammation is at least partially controlled, since operating on actively inflamed tissue in this disease carries a high risk of poor wound healing and further breakdown.

Prognosis

Untreated systemic granulomatosis with polyangiitis has a poor prognosis, historically associated with high mortality within the first year, primarily from renal and pulmonary involvement, though modern immunosuppressive regimens have transformed this outlook substantially.

Ocular prognosis depends heavily on how promptly systemic immunosuppression is started relative to the severity of scleral or corneal involvement, since necrotizing scleritis and peripheral ulcerative keratitis can each progress to perforation and vision loss if treatment is delayed.

With appropriate systemic treatment, many patients achieve remission of both ocular and systemic disease, though relapse is common and lifelong monitoring, coordinated between ophthalmology and rheumatology, remains necessary even after apparent disease control.

References

Pakrou N, Selva D, Leibovitch I. Wegener’s granulomatosis: ophthalmic manifestations and management. Seminars in Arthritis and Rheumatism. 2006.
Rothschild PR, Pagnoux C, Seror R, et al. Ophthalmologic manifestations of systemic necrotizing vasculitides at diagnosis. Journal of Rheumatology. 2013.
Kubaisi B, Abu Samra K, Foster CS. Granulomatosis with polyangiitis (Wegener’s disease): an updated review of ocular disease manifestations. Intractable & Rare Diseases Research. 2016.
Granulomatosis with Polyangiitis. EyeWiki, American Academy of Ophthalmology.
Granulomatosis with Polyangiitis. StatPearls, NCBI Bookshelf.

Test yourself

A few questions straight from this article.

1 / 10 0 correct

Which organ systems are classically involved in granulomatosis with polyangiitis?
The disease is a necrotizing granulomatous small- to medium-vessel vasculitis that classically targets the upper airway, lungs and kidneys.
Which serological pattern is characteristic of granulomatosis with polyangiitis?
A cytoplasmic ANCA pattern with anti-proteinase 3 specificity is present in the majority of patients with active systemic disease and is central to diagnosis and monitoring.
What should the finding of necrotizing scleritis prompt in any patient?
Necrotizing scleritis is strongly associated with systemic vasculitis, of which granulomatosis with polyangiitis is among the most important causes, so it should trigger a systemic search.
Which corneal complication of granulomatosis with polyangiitis carries a high risk of perforation?
Progressive crescentic thinning and ulceration of the peripheral cornea can occur with or without scleritis and is one of the more urgent ocular presentations of the disease.
How does orbital involvement in granulomatosis with polyangiitis differ from idiopathic orbital inflammation?
Granulomatous orbital inflammation in this disease tends to be more destructive and less steroid-responsive, frequently requiring more aggressive systemic immunosuppression.
What provides the most definitive confirmation of granulomatosis with polyangiitis?
Tissue from an affected site such as sinus, lung or kidney showing necrotizing granulomatous vasculitis is the most definitive confirmation, though a classic picture with positive ANCA often suffices to start treatment.
Which systemic testing is essential in suspected granulomatosis with polyangiitis?
Renal function and urinalysis for proteinuria or haematuria are essential given the frequency and seriousness of the rapidly progressive glomerulonephritis this disease causes.
What distinguishes relapsing polychondritis from granulomatosis with polyangiitis as a cause of scleritis?
Relapsing polychondritis causes scleritis alongside cartilage inflammation of the ear and nose, rather than the sinonasal and renal pattern that characterises granulomatosis with polyangiitis.
What is required to control necrotizing scleritis in granulomatosis with polyangiitis?
Topical treatment alone is inadequate; corticosteroids with cyclophosphamide or rituximab are used for remission induction, since the eye will not settle until the systemic vasculitis is controlled.
What is the outlook for untreated systemic granulomatosis with polyangiitis?
Untreated disease historically carried high first-year mortality driven by renal and pulmonary involvement, an outlook transformed by modern immunosuppressive regimens.