malignant eyelid tumours 1. basal cell carcinoma 2. squamous cell carcinoma 3. meibomian gland...
Post on 15-Jan-2016
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MALIGNANT EYELID TUMOURS
1. Basal cell carcinoma
2. Squamous cell carcinoma
3. Meibomian gland carcinoma4. Melanoma
5. Kaposi sarcoma
6. Merkel cell carcinoma
7. Treatment
Basal Cell Carcinoma - Important Facts
1. Most common human malignancy
2. Usually affects the elderly
3. Slow-growing, locally invasive
5. 90% occur on head and neck
6. Of these 10% involve eyelids
7. Accounts for 90% of eyelid malignancies
4. Does not metastasize
Frequency of location of basal cell carcinoma
Lower lid - 70% Medial canthus - 15%
Upper lid - 10% Lateral canthus - 5%
Nodular basal cell carcinomaEarly
• Shiny, indurated nodule
• Surface vascularization
• Slow progression
Advanced
• May destroy large portion of eyelid
Ulcerative basal cell carcinoma(rodent ulcer)
Early
Chronic ulceration
Advanced
Raised rolled edges and bleeding
Sclerosing basal cell carcinoma
• Indurated plaque with loss of lashes
Advanced
• Spreads radially beneath normal epidermis
Early
• May mimic chronic blepharitis • Margins impossible to delineate
Histology of basal cell carcinoma
Downgrowth from epidermisof small, dark atypical basal cells
Peripheral palisading
Cell nests in fibrous stroma
Squamous cell carcinoma
• Predilection for lower lid
• Hard, hyperkeratotic nodule
• Less common but more aggressive than BCC
• May develop crusting fissures
• May arise de novo or from actinic keratosis
Ulcerative
• No surface vascularization
• Red base• Borders sharply defined, indurated and elevated
Nodular
Prominent nuclei and abundant acidophilic cytoplasm
Variable sized groups of atypical epithelial cells within dermis
Histology of squamous cell carcinoma
Keratin ‘pearl’
Meibomian gland carcinoma
Spreading
Nodular
• Very rare aggressive tumour with 10% mortality• Predilection for upper lid
Hard nodule; maymimic a chalazion
Very large tumour
Diffuse thickening of lid margin and loss of lashes
Conjunctival invasion; maymimic chronic conjunctivitis
Histology of meibomian gland carcinoma
Cells stain positive for fatCells contain foamy vacuolatedcytoplasm and large hyperchromatic nuclei
Melanoma
From lentigo maligna (Hutchinson freckle)
Nodular
• Blue-black nodule with normal surrounding skin
• Plaque with irregular outline• Variable pigmentation
• Affects elderly• Slowly expanding pigmented macule• May be non-pigmented
Superficial spreading
Kaposi sarcoma
Advanced Early
Pink, red-violet lesion
• Vascular tumour occurring in patients with AIDS• Usually associated with advanced disease• Very sensitive to radiotherapy
May ulcerate and bleed
Merkel cell carcinoma
• Highly malignant with frequent metastases at presentation• Fast-growing, violaceous, well-demarcated nodule• Intact overlying skin• Predilection for upper eyelid
Treatment Options
3. Cryotherapy
2. Radiotherapy• Small BCC not involving medial canthus
1. Surgical excision• Method of choice
• Small and superficial BCC irrespective of location
• Adjunct to surgery in selected cases
• Kaposi sarcoma
Lower eyelid reconstruction following tumour excision
Mustarde cheek rotation flap for large defect
Tenzel flap for moderate defect
Direct closure of small defect
a b
a
b b
Eyelid-sharing procedure
Reconstruction of posterior lamella
Extensive sclerosing BCC Total excision of lower lid Tarsoconjunctival flap
Reconstruction of anterior lamella with skin graft
Appearance after healing