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 Syn: Meibomian gland Lipogranuloma

           

                Microscopic Image of Chalazion

     

Chalazion is characterized by chronic foreign-body, granulomatous inflammation. The inflammation is centered around the meibomian glands (deep chalazion) or Zeis sebaceous glands (superficial chalazion). The lesion presents as a slow growing, painless swelling in the eyelid.

Histologically there are multiple foci of of granulomatous inflammation.  Small globule of fat may be noted in the center of some of the granulomas.

               

Virus-induced chalazion. Eye. 2006 Feb;20(2):242-6

PURPOSE: To investigate a viral etiology in certain chalazia. METHODS: A prospective study over 7.5 years of all newly presenting chalazia associated with diffuse follicular conjunctivitis but without any other aetiological factors. Patients were investigated for ocular or systemic infections by history, physical exam, slit-lamp exam, and/or histology of conjunctival biopsy (including transmission electron microscopy). RESULTS: A total of 27 patients developed follicular conjunctivitis without meibomian gland dysfunction, blepharitis, or sexually transmitted diseases. Evidence for a viral aetiology included: recent systemic viral illness (15/27), recent contact with subjects with chalazia or follicular conjunctivitis (5/27), preauricular lymphadenopathy (4/27), viral corneal disease (4/27), or viral particles by ultrastructure (4/4). CONCLUSIONS: Chalazia may be associated with viral conjunctivitis. Intralesional corticosteroids should be considered with great caution for viral-induced chalazia.

Cytopathology of chalazia. Diag Cytopathol 2004 Aug;31(2):118-22

Chalazion is a common inflammatory condition of the eyelid, usually treated on the basis of clinical diagnosis alone. Preoperative exclusion of malignancy in chalazia with atypical clinical presentation could prevent unwarranted surgery. This is a retrospective study of aspirates from 16 patients with chalazia having an atypical clinical presentation. Smears were stained with May-Grunwald Giemsa. Two broad patterns of granulomatous inflammation reflecting the spectrum of changes in the course of the disease were seen. Nine smears had mixed-cell granulomas consisting of neutrophils, lymphocytes, plasma cells, macrophages, giant cells, and granulation tissue. Seven smears had suppurating granulomas characterized by epithelioid cell granulomas with numerous neutrophils in a proteinaceous background. Fine-needle aspiration cytology of chalazia with atypical clinical presentation provides a rapid, safe, and reliable means of documenting the diagnosis and excluding malignancy. 

Chalazion mimicking an eyelid tumor.J Fr Ophtalmol.2004 Feb;27(2):202-5

A 3-year-old girl had a tumor growing for a month on the superior right eyelid, attached on the free margin of the eyelid and partially necrotic. A surgical excision was performed under general anesthesia. The histopathological study found an inflammatory lesion with epithelioid and giant cells, evidence of a granuloma, suggesting the diagnosis of chalazion. This case shows the various clinical presentations of this common and benign disease of the eyelid.

Pseudotumoral eyelid inflammation. Apropos of an anatomo-clinical case.J Fr Ophtalmol.2003 Apr;26(4):423-6

A clinicopathological case of a 76-year-old male patient with a chronic inflammatory change of the inferior left eyelid is reported. The inflammation appeared as a reddish area of the inner part of the eyelid, without sharp limits, but with loss of lashes. Numerous local treatments did not to cure this condition. As some true eyelid tumors may mimic an inflammation during growth and, for example, sebaceous carcinoma may clinically present as chronic unilateral blepharitis, a surgical excisional biopsy was performed on this left eyelid. Its histopathological study showed a granulomatous inflammation, which was typical of a simple chalazion. This case clearly illustrates that the chalazion may not always appear as a limited nodular inflammation of the eyelid, but may have a more diffuse clinical presentation.

                      

 
 September 2009
 

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