Patchy and specific lesions in intestinal biopsy is seen in case of:
**Question:** Patchy and specific lesions in intestinal biopsy is seen in case of:
**Core Concept:** Intestinal biopsies are useful in diagnosing various gastrointestinal (GI) disorders by assessing the intestinal mucosa for histopathological changes. Different diseases can result in distinct patterns of lesions in intestinal biopsies.
**Why the Correct Answer is Right:** The correct answer, **D.** Crohn's disease, is a type of inflammatory bowel disease (IBD) that can affect any part of the GI tract. In intestinal biopsies, Crohn's disease presents with patchy and specific lesions, which can be identified through microscopic examination.
**Why Each Wrong Option is Incorrect:**
A. Ulcerative colitis (Option C) typically presents with continuous and diffuse mucosal inflammation, leading to a continuous mucosal ulceration, as opposed to the patchy lesions seen in Crohn's disease.
B. Eosinophilic gastroenteritis (Option B) typically causes eosinophilic inflammation in the muscularis layer or submucosa, leading to specific histopathological findings, but not patchy lesions.
Eosinophilic gastroenteritis typically involves the muscularis layer or submucosa, leading to specific histopathological findings, but not patchy lesions.
**Why Each Wrong Option is Incorrect:**
C. Infectious enteritis (Option A) usually presents with diffuse inflammation and infiltration of pathogens or inflammatory cells, which is different from the patchy lesions seen in Crohn's disease.
**Clinical Pearl:** This question emphasizes the importance of considering patchy and specific lesions in diagnosing Crohn's disease, which should prompt clinicians to suspect this disease and perform a thorough workup, including intestinal biopsies, to confirm the diagnosis.
**Correct Answer:** D. Crohn's disease
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**Why the Correct Answer is Right:** Intestinal biopsies in Crohn's disease demonstrate patchy and specific lesions, which are characteristic of this disease. The affected areas usually show granulomas, transmural inflammation, and patchy cryptitis, crypt abscesses, and crypt distortion. These findings help differentiate Crohn's disease from other inflammatory bowel diseases, such as ulcerative colitis or infectious enteritis.
**Why Each Wrong Option is Incorrect:**
A. Ulcerative colitis (Option C) typically presents with continuous and diffuse mucosal inflammation, leading to continuous mucosal ulceration, which is different from the patchy lesions seen in Crohn's disease.
B. Eosinophilic gastroenteritis (Option B) often involves the muscularis layer or submucosa, leading to specific histopathological findings, but not patchy lesions.
C. Infectious enteritis (Option A) usually presents with diffuse inflammation and infiltration of pathogens or inflammatory cells, which is different from the patchy lesions seen in Crohn's disease.
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**Clinical Pearl:** The diagnostic criteria for Crohn's disease include patchy and specific lesions in intestinal biopsies, as well