chalazion

chalazion /cha·la·zi·on/ (kah-la´ze-on) pl. chala´zia, chalazions   [Gr.] a small eyelid mass due to inflammation of a meibomian gland.

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cha·la·zi·on (k-lz-n, -n)

n.

A cyst of a tarsal gland.

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chalazion

[kəlā′zion]

Etymology: Gk, hailstone

a small, nonmalignant, localized swelling of the eyelid resulting from obstruction and retained secretions of the meibomian glands. Treatment can include warm wet compresses, but the condition often requires surgery for correction. Compare hordeolum, sty.

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chalazion (ch·laˑ·zē·n),

n nonmalignant swelling in the eyelid area due to an obstruction of or malfunctioning meibomian gland.

Chalazion.

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chalazion

a small eyelid mass resulting from chronic inflammation of a meibomian gland. Called also meibomian cyst.

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chalazion 

A chronic inflammatory lipogranuloma due to retention of the secretion (such as blocked ducts) of a meibomian gland in the tarsus of an eyelid. It is characterized by a gradual painless swelling of the gland without marked inflammatory signs and sometimes astigmatism which is induced by the cyst pressing on the cornea (Fig. C5). Small chalazia may disappear spontaneously but large ones usually have to be incised and curetted (i.e. removal of the pus with a scraper) through a tarsal incision. Resolution may also occur after local injection of a corticosteroid drug (e.g. dexamethasone or triamcinolone). Syn. meibomian cyst (although it is not a true cyst because its walls are made of granulomatous tissue and not lined with epithelium). See internal hordeolum.

Fig. C5 Upper eyelid chalazion

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chalazion

Meibomian cyst, meibomian gland lipogranuloma, tarsal cyst Opthalmology A cyst in the eyelid caused by plugging of the meibomian gland Management Warm wet compresses; surgical drainage if unresponsive to conservative measures