Diagnostic challenges in celiac disease

Area of Science:

• Gastroenterology
• Immunology
• Pathology

Background:

• Celiac disease diagnosis relies on serological tests and small intestinal biopsy.
• High antibody titers and villous atrophy confirm diagnosis in immunocompetent individuals on a gluten-containing diet.
• Symptom and histological improvement with a gluten-free diet support the diagnosis.

Purpose of the Study:

• To address diagnostic challenges in celiac disease.
• To emphasize critical evaluation of laboratory and histopathology results when diagnostic criteria are not met.
• To guide differential diagnosis and management of persistent or recurrent symptoms.

Main Methods:

• Review of diagnostic criteria for celiac disease.
• Analysis of factors contributing to diagnostic uncertainty, including serology and biopsy interpretation.
• Consideration of differential diagnoses and management strategies for complex cases.

Main Results:

• Diagnostic certainty requires high celiac-specific antibody titers and villous atrophy on a gluten-containing diet.
• Serological interpretation must account for immune deficiency, antibody cross-reactivity, and seronegative/latent celiac disease.
• Biopsy validity depends on sample quality, gluten consumption, and awareness of uneven pathological changes and mimickers.
• Persistent symptoms necessitate re-evaluation of diagnosis, gluten-free diet adherence, and search for concurrent disorders.

Conclusions:

• Optimal celiac disease diagnosis involves integrated interpretation of serology and biopsy, performed while consuming gluten.
• Diagnostic uncertainty demands critical assessment, consideration of alternative diagnoses, and thorough patient history.
• Management of persistent symptoms requires reassessment of the initial diagnosis and treatment plan.