ANCA-associated vasculitis in a patient with enteropathic spondylarthritis: a case report and literature review

Rare association of granulomatosis with polyangiitis with an underdiagnosed spondyloarthritis effectively treated with rituximab: A case-report

RATIONALE

Associations of autoimmune diseases are rare but interesting and challenging situations from a diagnostic, pathophysiological, and therapeutic point of view. This article studies a rare association of autoimmune diseases by discussing the pathophysiological hypotheses and an original therapeutic management. The coexistence of antineutrophil cytoplasmic antibody-associated vasculitis and spondyloarthritis has rarely been described.

PATIENT CONCERNS

We present a patient with inflammatory back pain, stiffness, and enthesopathies followed by pulmonary and ear, nose and throat granulomatous involvement.

DIAGNOSES

A combination of spondyloarthritis and granulomatosis with polyangiitis, with spinal, enthesopathic, pulmonary, and ear, nose and throat involvement.

INTERVENTIONS AND OUTCOMES

Effective treatment with rituximab both on spondyloarthritis and vasculitis.

LESSONS

We discuss the pathogenic, diagnostic, and therapeutic implications of this rare but intriguing association between these 2 inflammatory conditions.