## **Core Concept**
Typhoid ulcers are complications of typhoid fever, caused by *Salmonella Typhi* infection. These ulcers occur due to the bacteria's invasion of the intestinal mucosa, leading to necrosis and sloughing of the mucosa. The pathophysiology involves the bacteria's entry into the bloodstream, followed by colonization of Peyer's patches in the intestine.

## **Why the Correct Answer is Right**
The correct answer, , implies a feature that is not characteristic of typhoid ulcers. Typically, typhoid ulcers are known for being:
- Solitary or few in number
- Oval or round in shape
- Longitudinal axis along the intestine's long axis
- Bleeding is not a common feature; they are more likely to perforate than bleed.

## **Why Each Wrong Option is Incorrect**
- **Option A:** This option would describe a characteristic feature of typhoid ulcers, making it incorrect as the "except" option.
- **Option B:** Similarly, if this option aligns with known features of typhoid ulcers, such as their location or shape, it would be incorrect as the exception.
- **Option C:** If this option also describes a known feature, it would not be the correct answer to the "except" question.
- **Option D:** This is the correct answer because it likely describes a feature not typical of typhoid ulcers, such as significant bleeding, multiple ulcers, or another characteristic not commonly associated with them.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that typhoid ulcers are more likely to **perforate** than bleed. This is a critical distinction because perforation can lead to peritonitis, a life-threatening complication.

## **Correct Answer: D.**