In recurrent chalazion, histopathological examination is done to rule out
**Core Concept**
Recurrent chalazion is a condition where a chalazion (a type of benign eyelid lump) keeps recurring. Histopathological examination of the affected tissue is essential to determine the underlying cause, which may not be a simple meibomian gland lipogranuloma as seen in a typical chalazion.
**Why the Correct Answer is Right**
The correct answer is to rule out basal cell carcinoma or other malignant lesions. This is because basal cell carcinoma can mimic a chalazion clinically and may present with recurrent or persistent lesions. Histopathological examination is necessary to differentiate between a benign chalazion and a malignant tumor. The examination involves a biopsy of the affected tissue, which is then examined under a microscope for any abnormal cell growth or other signs of cancer.
**Why Each Wrong Option is Incorrect**
* **Option A:** Sarcoidosis is a systemic granulomatous disease that can affect any organ, including the eye. However, it is not the primary concern in recurrent chalazion.
* **Option B:** Hordeolum (stye) is a superficial infection of the eyelid margin, which is different from a chalazion. Histopathological examination is not necessary to rule out a hordeolum.
* **Option D:** Demodex infestation can cause blepharitis, which may present with eyelid lesions. However, it is not a primary concern in recurrent chalazion.
**Clinical Pearl / High-Yield Fact**
It is essential to remember that any recurrent or persistent eyelid lesion should be thoroughly evaluated to rule out a malignant tumor, especially basal cell carcinoma.
**Correct Answer: C. Basal cell carcinoma.**