1 MCQs in Surgery for NEET PG
A 62-year-old man with a remote Billroth II gastrectomy 30 years ago for perforated peptic ulcer presents with progressive malabsorptive diarrhea, steatorrhea, 12 kg weight loss, megaloblastic anemia, and paresthesias. Upper GI endoscopy reveals the structure marked **A** — a markedly dilated, angulated, tortuous afferent limb filled with stagnant bilious fluid and residual food debris. Quantitative culture of jejunal aspirate yields >10⁵ CFU/mL of colonic-type bacteria. Which of the following best explains the pathophysiology of malabsorption in this patient?
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