Pathology of eyelids and adnexa

Pathology of eyelids and adnexa

1. PATHOLOGY OF EYELIDS
AND ADNEXA
OPTOM FASLU
MUHAMMED

2. Pathology of eyelids and adnexa are similar
to those that occur in skin and appendages
elsewhere in the body
Lesions of eyelids and adnexa are of
following types
1.Cysts
2.Inflammations/infections
3.Metabolic changes & degenerations
4.Tumourous conditions
5.Tumours

3. CYSTS
3 Types
Inclusion cysts
Retention cysts
Devolepmental
/dermoid cysts

4. Inclusion cysts
Occur in any part of the eyelid following
trauma or infection
Cyst – keratinous lined by stratified
squamous epithelium and the walls do
not contain any appandages

5. Retention cysts
Result of blockade of ductal opening of
eccrine glands
The cyst may contain clear or
sebeceous material based on the type
of gland involved

7. Dermoid Cysts
These are encountered in midline
/fusion lines
Frequently seen in infants or
adolescents
Cysts may show intracranial
extension ,containing keratosebaceous
material and are lined by stratified
squamous epithelium
The wall contain appendages such as
sebaceous glands

8. INFLAMMATIONS /INFECTIONS
Eyelid may be a source of a variety of
specific and non specific infective
disorders
Some of the most frequently
encountered lesions of the eyelid are
presented below

9. BLEPHARITIS
Type of inflammation affecting the eyelids
may be acute/chronic
Lid margin inflammations are commonly
associated with dandruff and is termed as
seborrhoeic Blepharitis.
Extension of inflammation may be noticed
upto conjunctiva- blepharoconjunctivitis
Staphylococcus is responsible

11. Hordeolum
Suppurative nonspecific inflammation
of lid
Based on anatomical site of
inflammation -2 forms are recognized
Hordeolum externum
Hordeolum internum

12. Suppurative
inflammation of
Zeiss and Moll
glands
Hordeolum externum (stye)

13. Suppurative
inflammation of
Meibomian glands
associated with
blockage of duct
Hordeolum internum

14. CHALAZION
Chronic non infective granulomatous
inflammation of sebaceous glands of
lids with/without granulomatous reaction
Zeiss gland inflammation- external
chalazion
Meibomian gland-internal chalazion

16. Other infections/inflammations
Bacterial /myobacterial agents may
produce non granulomatous or
granulomatous reaction accordingly.
Viral infections that affect skin

17. Molluscum contagiosum
Presence of molluscum bodies
Result of enlargement and distension of
epiderma cells with viral inclusions

19. THANK YOU