This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Medicine
The jejunal biopsy is diagnostic in 
Select and explain. 
A. Abetalipoproteinemia, B. Giardiasis, C. Tropical sprue, D. Celiac sprue
A: Abetalipoproteinemia
Answer: A: Abetalipoproteinemia 
Explanation: Abetalipoproteinemia is characterized by a normal mucosal appearance except for the presence of mucosal absorptive cellsthat contain lipid postprandially and disappear after a prolonged period of either fat-free intake or fasting.Ref: Harrison; 19th edition; Page no: 1939