**Core Concept**
Reflux esophagitis is a chronic inflammatory condition of the esophagus caused by the backflow of stomach acid and bile into the esophagus, leading to mucosal damage and complications. This condition is a result of the failure of the lower esophageal sphincter (LES) to prevent the reflux of acidic gastric contents into the esophagus.

**Why the Correct Answer is Right**
The complications of reflux esophagitis can include esophageal strictures, which are narrowings of the esophagus that can cause difficulty swallowing, and esophageal adenocarcinoma, a type of cancer that develops in the glandular cells of the esophagus. Another complication is Barrett's esophagus, a condition in which the normal squamous epithelium of the esophagus is replaced by metaplastic columnar epithelium. This condition increases the risk of esophageal adenocarcinoma.

**Why Each Wrong Option is Incorrect**
* **Option A:** Stricture formation is indeed a complication of reflux esophagitis, so this option is incorrect.
* **Option B:** Esophageal adenocarcinoma is a known complication of long-standing reflux esophagitis, so this option is incorrect.
* **Option C:** Barrett's esophagus is a recognized complication of chronic reflux esophagitis, so this option is incorrect.

**Clinical Pearl / High-Yield Fact**
A key point to remember is that the presence of dysplasia in Barrett's esophagus increases the risk of progressing to esophageal adenocarcinoma, emphasizing the importance of regular surveillance and early detection.

**Correct Answer: D.**