Whole thickenss of bowel is involved with skin lesions in ?
**Core Concept**
The question is testing the understanding of a rare condition characterized by thickening of the bowel wall and skin lesions. This condition is often associated with malabsorption, weight loss, and other systemic symptoms.
**Why the Correct Answer is Right**
The correct answer is Zollinger-Ellison syndrome, a rare disorder caused by a gastrin-secreting tumor, leading to excessive acid production in the stomach. The increased acidity stimulates the growth of the bowel wall, resulting in thickening, and can also cause skin lesions due to the excess gastrin and acid production. The pathophysiology involves the gastrin-releasing peptide (GRP) and its receptors, which stimulate the parietal cells in the stomach to secrete more acid.
**Why Each Wrong Option is Incorrect**
**Option A:** Crohn's disease is a type of inflammatory bowel disease (IBD) that can cause thickening of the bowel wall, but it is not typically associated with skin lesions.
**Option B:** Ulcerative colitis is another type of IBD that causes inflammation and thickening of the colon, but it is not usually associated with skin lesions.
**Option C:** Celiac disease is an autoimmune disorder that causes malabsorption and bowel damage, but it is not typically associated with skin lesions.
**Clinical Pearl / High-Yield Fact**
Zollinger-Ellison syndrome is often associated with other endocrine tumors, such as pancreatic neuroendocrine tumors (PNETs), and can be treated with proton pump inhibitors (PPIs) and somatostatin analogs.
**Correct Answer:** D. Zollinger-Ellison syndrome.