Antineutrophil cytoplasmic antibody–associated vasculitis with initial gastrointestinal symptoms: case series and literature review

Key Points

• This research aims to address the rarity and misdiagnosis of gastrointestinal symptoms in antineutrophil cytoplasmic antibody-associated vasculitis (AAV).
• Conducted a case series analysis of AAV patients with initial gastrointestinal symptoms.
• Performed a literature review to assess prior findings related to AAV symptoms.
• Evaluated the involvement of gastrointestinal, pulmonary, and renal systems in AAV cases.
• Identified significant cases where gastrointestinal symptoms preceded AAV diagnosis.
• Highlighted the importance of recognizing gastrointestinal symptoms for early detection of AAV.
• Reinforced the need for thorough assessments including pulmonary involvement in suspected AAV cases.