40 year-old immunocompromized came with C/o dysphagia. UGI scopy showed multiple ulcers in the distal esophagus. Biopsy from the esophagus showed the following. What is the diagnosis?
**Core Concept**
The patient's symptoms and biopsy findings suggest an opportunistic infection in the immunocompromised individual, which has led to the development of esophageal ulcers. This condition highlights the importance of considering opportunistic pathogens in immunocompromised patients, particularly those with human immunodeficiency virus (HIV) or undergoing chemotherapy.
**Why the Correct Answer is Right**
The presence of multiple ulcers in the distal esophagus, along with the patient's immunocompromised status, strongly suggests an opportunistic infection caused by **Candida albicans**. This fungus typically colonizes the mucosa of the esophagus, leading to the formation of ulcers. The biopsy findings are consistent with a diagnosis of esophageal candidiasis, characterized by the presence of pseudohyphae and yeast forms of **Candida albicans**. The distal esophagus is a common site for this infection due to its proximity to the stomach, where **Candida albicans** can colonize.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is likely incorrect as it does not specify a pathogen or condition that would cause esophageal ulcers in an immunocompromised patient.
* **Option B:** While herpes simplex virus (HSV) can cause esophageal ulcers, it typically presents as a solitary ulcer rather than multiple ulcers. HSV esophagitis is more common in immunocompromised patients but would not be the most likely diagnosis given the biopsy findings.
* **Option C:** This option is incorrect as it is not a recognized cause of esophageal ulcers in immunocompromised patients.
**Clinical Pearl / High-Yield Fact**
In immunocompromised patients, opportunistic infections such as esophageal candidiasis should be considered in the differential diagnosis of dysphagia. Prompt recognition and treatment of these infections are essential to prevent complications and improve outcomes.
**Correct Answer:** C. Esophageal candidiasis is caused by Candida albicans.