A nodule or cyst, often on the upper eyelid, resulting from the obstruction of a sebaceous gland is a/an .
The correct answer and explanation is:
Correct Answer: Chalazion
A chalazion is a small, usually painless nodule or cyst that forms on the upper or lower eyelid due to the blockage of a sebaceous (meibomian) gland. These glands are responsible for secreting oils that help lubricate the surface of the eye. When a gland becomes clogged, the trapped secretions can accumulate and lead to inflammation and swelling, forming a firm lump.
Chalazia are often confused with styes (hordeola). However, while both can cause eyelid lumps, they are different in nature:
- A stye is typically painful, caused by a bacterial infection (usually of a hair follicle or sweat gland), and appears red and swollen.
- A chalazion is generally not infected, painless, and grows more slowly. It is more of a chronic inflammatory lesion than an acute infection.
Chalazia may vary in size and can become large enough to press on the eyeball, causing blurry vision. In some cases, they resolve on their own without treatment. Home management includes:
- Applying warm compresses several times a day to help open the gland and drain the contents.
- Gentle massage of the eyelid may aid in improving drainage.
If a chalazion does not improve after a few weeks of home treatment or becomes recurrent, medical intervention may be needed. Options include:
- Corticosteroid injections to reduce inflammation.
- Surgical drainage or removal by an eye specialist.
Preventing chalazia includes maintaining good eyelid hygiene, especially for individuals with chronic blepharitis or other eyelid disorders. Recurrent chalazia may warrant further investigation to rule out underlying conditions such as sebaceous gland carcinoma, although this is rare.
In conclusion, a chalazion is a common, typically non-infectious eyelid lump caused by the blockage of an oil-producing gland, often managed with conservative care.