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Chalazion


Chalazia are firm, swollen masses that are well localized in the eyelid. They are caused by an impaction of the meibomian glands along the eyelid margin. The gland becomes distended with secretion, and in many cases the gland ruptures releasing the secretion to the surrounding eyelid tissue. This may result in a localized tissue reaction called a granuloma. Chalazion often occur adjacent to an eyelid tumour when the tumour is blocking the normal drainage of the meibomian gland. In some cases chalazia are lanced and curetted, while in others they are removed surgically and sent for pathology to rule-out the possibility of tumour.