## **Core Concept**
Coeliac disease is a chronic autoimmune disorder primarily affecting the small intestine, triggered by the ingestion of gluten in genetically predisposed individuals. The condition leads to mucosal inflammation, atrophy of the villi, and malabsorption. Histological examination of intestinal biopsies plays a crucial role in the diagnosis.

## **Why the Correct Answer is Right**
The correct answer, option , is characterized by specific histological features that are commonly observed in coeliac disease. These include:
- **Villous atrophy**: A reduction in the height and width of the villi, which can range from partial to total atrophy.
- **Increased intraepithelial lymphocytes (IELs)**: An increase in the number of lymphocytes within the epithelial layer of the intestinal mucosa.
- **Crypt hyperplasia**: An increase in the depth of the crypts of Lieberkühn, which is a response to the injury.

## **Why Each Wrong Option is Incorrect**
- **Option A:** Increased IELs are a hallmark of coeliac disease, making this option incorrect as an "except" choice.
- **Option B:** Villous atrophy is a key feature, so this option is also incorrect.
- **Option C:** Crypt hyperplasia is another characteristic feature, which makes this option incorrect.

## **Why Option D is Correct as the Except**
- **Option D:** Typically, coeliac disease is associated with a decrease in the number of goblet cells or no significant change; however, the most distinctive "except" in the context of provided options usually relates to features not commonly associated with active coeliac disease, such as significant **goblet cell increase** or **inflammation limited to the lamina propria without IEL increase**. However, without specific details on , we infer based on common features.

## **Clinical Pearl / High-Yield Fact**
A key clinical pearl is that while histological features can be quite characteristic, they are not entirely specific to coeliac disease. A definitive diagnosis often requires a combination of clinical presentation, serological tests (e.g., tissue transglutaminase antibody), and histological findings.

## **Correct Answer: D. Increased goblet cells.**