Question

the disease that is produced by an organism that invades into the intestinal crypts and undermines the mucosa from below producing \flask shaped\ ulcers in the colon is which of the following?
giardiasis
amoebic dysentery
bacillary dysentery
typhoid fever

Explanation:

To solve this, we analyze each option:

• Giardiasis: Caused by Giardia, affects small intestine, no flask - shaped ulcers.
• Amoebic dysentery: Caused by Entamoeba histolytica. It invades intestinal crypts, undermines mucosa from below, and produces flask - shaped ulcers in the colon.
• Bacillary dysentery: Caused by Shigella, causes ulcers but not flask - shaped.
• Typhoid fever: Caused by Salmonella, affects lymphoid tissue, no flask - shaped ulcers.

Answer:

B. Amoebic dysentery