A 40-year-old immunocompromised patient presented with complaints of dysphagia. Upper GI endoscopy showed multiple serpiginous ulcers in the distal esophagus. Biopsy from the esophagus showed the following. What is the diagnosis?
**Core Concept**
The patient's presentation with dysphagia and multiple serpiginous ulcers in the distal esophagus suggests an opportunistic infection in an immunocompromised host. This clinical scenario is characteristic of a specific type of esophageal pathology.
**Why the Correct Answer is Right**
The biopsy from the esophagus is likely to show the presence of **Cytomegalovirus (CMV)** inclusions. CMV is a common cause of esophagitis in immunocompromised patients, particularly those with HIV/AIDS or undergoing chemotherapy. The virus infects the esophageal mucosa, leading to the formation of serpiginous ulcers. The diagnosis is confirmed by the presence of characteristic CMV inclusions, such as owl's eye cells, on histopathological examination.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because it does not match the clinical presentation and biopsy findings. **Herpes simplex virus (HSV)** esophagitis typically presents with smaller, more discrete ulcers, rather than the serpiginous ulcers seen in CMV esophagitis.
* **Option B:** This option is incorrect because **Acid reflux** or **Gastroesophageal reflux disease (GERD)** would not typically present with serpiginous ulcers in the distal esophagus, and would not require a biopsy for diagnosis.
* **Option C:** This option is incorrect because **Candida esophagitis** typically presents with white plaques or pseudomembranes on the esophageal mucosa, rather than serpiginous ulcers.
**Clinical Pearl / High-Yield Fact**
In immunocompromised patients, CMV esophagitis should be suspected in the presence of dysphagia and serpiginous ulcers in the distal esophagus, and confirmed by biopsy showing characteristic CMV inclusions.
**Correct Answer:** D. Cytomegalovirus (CMV) esophagitis.