NBME3 Blk2 q37 - sheri

[ArchivalUser]

A 4 year old boy has had recurrent watery diarrhea, abdominal distention and increased borborygmi for 3 month. The elimination of most diary products form his diet causes his symptoms to abate. In which of the following portions of the GI tract is an enzyme def. most likely?
1. Colon
2. Jejunum
3. liver
4. Pancreas
5. Stomach

Plz let me know why Jejunum is the answer when the stem says the elimination of the most diary product abate the Symptoms , which foster the answer of Pancreas def. ( like CF).

[ArchivalUser]

Lactase deficiency. Lactose in dairy products.

[ArchivalUser]

The q says " elimination of the most diary products" abate the symptoms though! not " product" !
What do ya think? and then the boy is 4 year-old and no longer is dependent fully to milk...