Posterior pole lesions Flashcards
(50 cards)
Where is a naevus likely to be?
Choroid or sclera
What is a risk factor for naevi?
Caucasian
What are the signs of a naevus?
Slate grey colour
Feathery margins
No subretinal fluid
Maybe drusen and/or a hypopigmented halo
What investigations can be done for a naevus?
OCT
Ultrasound
Auto fluorescence
How should naevi be managed in primary care?
6/12 recall if not suspicious, then 12/12
How should naevi be managed in secondary care?
1-2 suspicious features: 4-6/12 recall
3+ suspicious features: refer to ocular oncology
What is a risk factor for melanoma?
Older age (peaks at 60)
What are the signs of melanoma?
Elevation
Sub-retinal
Grey-brown or no colour
Overlying lipofuscin
Possible haem/subretinal fluid
Close to disc (60% within 3mm)
What investigations can be done for melanoma?
MRI
Biopsy
Tumour analysis
Systemic investigation
How should melanoma be managed?
Urgent referral - will be further referred to ocular oncology
What are some further signs of melanoma?
Feeder vessels
Choroidal folds
Inflammation
Iris neovasc
Glaucoma
Cataract
How can melanoma be treated?
Brachytherapy (small tumours with good chance of saving sight)
External beam radiotherapy
Sterotactic radiotherapy
Enucleation
Trans-pupillary thermotherapy
Trans-scleral choroidectomy
What acronym can help identify a melanoma?
To Find Small Ocular Melanoma (Using Helpful Hints Daily)
Thickness over 2mm
Fluid (present subretinally)
Symptoms (present)
Orange pigment (lipofuscin)
Margin (within 3mm of disc)
Ultrasound Hollowness
Halo (none)
Drusen (none)
What are the signs of a choroidal hemangioma?
Oval
Orange
Indistinct margins
Subretinal fluid
Hyperfluorescence on ICG
What is a choroidal haemangioma?
Mass of vascular channels within choroid
What can a choroidal haemangioma cause?
Exudative RD
When does a melanocytoma usually present?
50 years old
What are the signs of a melanocytoma?
Heavy pigment, usually at ONH
No sxs
How should a choroidal haemangioma be managed?
Routine referral
What are the risk factors for osteoma?
Female
Young adults
What are the signs of an osteoma?
Flat
Orange
Well defined, scalloped edges
Near disc or posterior pole
Slow growth or regression
Possibly fine vessels/bone spicules
What are the signs of metastatic disease?
Yellow (pale)
Elevated
Fast growing
Indistinct margins
Possibly overlying pigment changes
Multifocal and bilateral (often)
Where does metastatic disease usually come from?
Lungs
Breast
GI tract
Kidney
Skin
Rarely, prostate
What is the management for metastatic disease?
Urgent referral - systemic review if primary unknown