What is the diagnostic method to confirm esophageal candidiasis?

What is the diagnostic method to confirm esophageal candidiasis?

• A. Serology for Candida
• B. Esophagogastroduodenoscopy with biopsy
• C. Sputum culture
• D. Plain X-ray

Answer: (B)

Diagnosing esophageal candidiasis relies on direct visualization of the esophageal mucosa and obtaining tissue to prove infection, not just exposure or colonization. Esophagogastroduodenoscopy with biopsy allows the clinician to see the characteristic mucosal plaques or exudates and to take tissue samples for histology. The biopsy typically shows budding yeasts with pseudohyphae invading the mucosa, sometimes with fungal elements highlighted by special stains. This tissue confirmation is essential because noninvasive tests can't reliably distinguish true esophageal infection from colonization or transient symptoms. Serology for Candida isn’t helpful here because antibodies indicate exposure, not active mucosal infection, and many people have positive serology without disease. Sputum culture won’t diagnose esophageal infection and can reflect airway colonization instead. A plain X-ray lacks the sensitivity and specificity to identify Candida involvement of the esophagus and is not diagnostic. If suspicion is high, this endoscopic approach provides definitive confirmation and helps exclude other causes of odynophagia or dysphagia.

Diagnosing esophageal candidiasis relies on direct visualization of the esophageal mucosa and obtaining tissue to prove infection, not just exposure or colonization. Esophagogastroduodenoscopy with biopsy allows the clinician to see the characteristic mucosal plaques or exudates and to take tissue samples for histology. The biopsy typically shows budding yeasts with pseudohyphae invading the mucosa, sometimes with fungal elements highlighted by special stains. This tissue confirmation is essential because noninvasive tests can't reliably distinguish true esophageal infection from colonization or transient symptoms.

Serology for Candida isn’t helpful here because antibodies indicate exposure, not active mucosal infection, and many people have positive serology without disease. Sputum culture won’t diagnose esophageal infection and can reflect airway colonization instead. A plain X-ray lacks the sensitivity and specificity to identify Candida involvement of the esophagus and is not diagnostic. If suspicion is high, this endoscopic approach provides definitive confirmation and helps exclude other causes of odynophagia or dysphagia.