chalazion
Học thuậtThân thiện
Definition
Noun: A chalazion is a small, typically painless lump or cyst that forms on the eyelid. It is caused by a blockage in one of the Meibomian glands, which are tiny oil-producing glands located along the edge of the eyelids. This blockage leads to inflammation and the accumulation of secretions, resulting in a firm, localized swelling.
Examples of Usage
- A chalazion often develops gradually and can cause mild eyelid swelling.
- Unlike a stye, a chalazion is usually not infectious and tends to be less painful.
- The ophthalmologist diagnosed the bump on her upper lid as a chalazion.
Advanced Usage
- Recurrent chalazion: This term is used when a person experiences multiple or returning chalazia, which may indicate an underlying condition like blepharitis (chronic eyelid inflammation).
- Incision and curettage of a chalazion: This is a minor surgical procedure to drain and remove a persistent or large chalazion.
Variants and Related Words
- Meibomian cyst: This is a direct synonym for chalazion, referring specifically to its origin in the blocked Meibomian gland.
- Stye (or hordeolum): A related but distinct condition. A stye is a painful, infectious abscess at the base of an eyelash, while a chalazion is a non-infectious blockage further back in the eyelid.
Synonyms
- Meibomian cyst
- Eyelid cyst
- Tarsal cyst
Related Phrases
- To develop a chalazion: The common phrase describing the onset of the condition.
- She developed a chalazion after a period of eye irritation.
- To have a chalazion drained: Refers to the medical treatment for removing its contents.
- The chalazion was large enough that the doctor recommended having it drained.
Noun
- a small sebaceous cyst of the eyelid resulting when a Meibomian gland is blocked