<prompt> Chalazion isare a True meibomian cyst b Mucous cyst c Sebaceous cyst d Cyst of hair follicle e Obstruction of meibomian glandaceabcabdbcd  <response>: Chalazion is chronic non-infective lipogranulomatous inflammation of meibomian gland, a modified sebaceous gland, due to obstruction of duct of meibomian gland.Chalazion is also called sebaceous cyst of the eyelid. 