Cytomegalovirus colitis with common variable immunodeficiency and Crohn's disease

Area of Science:

• Immunology
• Gastroenterology
• Pathology

Background:

• Common variable immunodeficiency (CVID) is a primary immunodeficiency characterized by impaired antibody production.
• Crohn's disease (CD) is a chronic inflammatory bowel disease with complex etiology.
• Comorbidities between CVID and autoimmune diseases like CD are increasingly recognized.

Purpose of the Study:

• To report a rare case of a pediatric patient with coexisting CVID and CD.
• To investigate the potential role of opportunistic infections in the severe clinical course.
• To highlight diagnostic and therapeutic challenges in managing such complex cases.

Main Methods:

• Case report of an 11-year-old male with CVID and CD.
• Review of clinical history, diagnostic workup, and treatment interventions.
• Postmortem examination including histopathological analysis of biopsies from liver, lungs, and lymph nodes.

Main Results:

• The patient experienced severe gastrointestinal complications requiring total colectomy.
• Despite immunoglobulin and antiviral therapies, the patient's condition worsened postoperatively.
• Postmortem biopsies revealed cytomegalovirus (CMV) inclusion-containing cells in the liver, lungs, and lymph nodes, despite seronegative laboratory results.

Conclusions:

• This case underscores the potential for severe complications and mortality in pediatric patients with combined CVID and CD.
• Opportunistic infections, such as CMV, may play a critical role in disease progression and treatment failure.
• Aggressive diagnostic approaches and tailored therapeutic strategies are crucial for managing these complex immunological and gastrointestinal disorders.