Gut and Liver in Vasculitic Disorders

Area of Science:

• Gastroenterology
• Rheumatology
• Vascular Medicine

Background:

• The gastrointestinal (GI) tract is often overlooked in vasculitic disorders, yet numerous disease mechanisms impact its structures.
• Vascular inflammation can disrupt (peri)vascular homeostasis and perivascular matrix metabolism, affecting GI function and motility.

Purpose of the Study:

• To review the mechanisms, clinical manifestations, diagnostic approaches, and therapeutic strategies for vasculitis affecting the GI tract.
• To highlight the importance of early recognition and intervention in GI vasculitis.

Main Methods:

• Review of existing literature on vasculitis and its GI manifestations.
• Discussion of clinical symptoms, diagnostic imaging (Doppler ultrasound, CT, MRI, angiography), and laboratory findings.
• Overview of therapeutic options including corticosteroids, immunosuppressants, biologics, and antiviral agents.

Main Results:

• GI vasculitis presents with diverse symptoms like abdominal pain, bleeding, ileus, and necrosis, particularly in antiphospholipid syndrome.
• Small-bowel involvement can lead to pseudoobstruction, malabsorption, and bacterial overgrowth.
• Diagnosis often requires advanced imaging when biopsies are inconclusive; treatment involves immunosuppression and targeted therapies.

Conclusions:

• GI vasculitis significantly impacts patient health, with symptoms often linked to vascular homeostasis disruption.
• Early diagnosis and intervention are critical to prevent irreversible organ damage and improve patient prognosis.
• Treatment strategies are tailored to the underlying vasculitis, ranging from conventional immunosuppressants to biologics and antivirals.