Step 1 → Gastrointestinal EsophagusPreview this topic sectionPreview the conditions. Plans unlock the full Step 1 details when you need them. Free Biochemistry Free Microbiology Plans Esophagus conditions Adenocarcinoma (Esophageal) Barrett Esophagus Boerhaave Syndrome Distal Esophageal Spasm Esophageal Perforation Scleroderma Esophageal Involvement Squamous Cell Carcinoma (Esophageal) Zenker Diverticulum