The flashcards below were created by user
on FreezingBlue Flashcards.
What is orbital mucormycosis?
fungal infection of the sinuses
What is orbital cellulitis?
infection behind orbit
Sx and Tx of orbital cellulitis?
- fever, acute, unilateral, edema, redness, warmth, painful ophthalmoplegia ON dysfuntion
- hospital, antibiotics, ct scans
idiopathic orbital inflammatory disease
Sx of IOID
uni, swelling, chemosis, acute, proptosis, ophthalmoplegia
Tx of IOID?
What is TED?
- autoimmune, hyperthyroidism
- infallmation of EOM and orbital tissue
sx and TED?
- grittiness, photophobia, diplopia, vf defects
- 1. Soft tissue- swelling, conj hyperaemia, chomosis
- 2. eyelid retraction- primary gaze, delayed in downgaze
- 3. Proptosis- prevents eye closure- steroids
- 4. optic neuropathy- compression of ON or blood supply by EOM muscles
- 5. Ocular motility- diplopia
tx of TED?
lubricants, eyelid taping, steroids, surgical decompression, botox
- unilateral painless proptosis
- located within muscle cone
- surgical excision
What is an orbital varices?
- low pressure/flow, thin walled vessel
- engorgement can occur via increased venous pressure
What is a direct carotid- cavernous fistula
- intracavernous part of internal carotid
- trauma cause
- flow shunt
- sx: ptosis, ophthal, raised IOP, haemorrhages
- tx: surgery, resolves
What is an indirect carotid cavernouse fistula
- benign vascular formation
- early childhood
- surgical treatment
What is a superficial dermoid cyst?
- no displacement of globe
- mobile under skin
What is a deep dermoid cyst?
- obstruction of drainiage of sinus secretions
- gradual proptosis or globe displacement
herniation of csf through congenital skull defect
herniation only involving dura
- inflammation of lacrimal sac folllowing blockage
- tx: antibiotics and warm compresses
What is a dacryoadenitis?
- inflammation of lacrimal gland
- sx: warmth, upper lid swelling S SHAPE, warmth, tenderness
Adenoid cystic carcinoma?
- epithelial tumor of lacrimal gland
- f>m, 4th
- exophthalmos, downward globe displacement, ptosis, diplopia, orbital pain
what is an optic nerve glioma?
- optic nerve sheath tumor
- childhood, slow, benign
- proptosis,visual loss, optic atrophy
What is a lymphoma?
- 6th-8th lymphoid lesions
- slow onset, anywhere in globe
- tx: radio/chemotherapy
- most common orbital malignancy- superonasal
- sx: proptosis, swelling mass, ptosis, injection
- tx: radio/chemo
- ddx: oribtal: NOT warm
- 80% arise from optic nerve sheath
- PAINLESS, decreased VA, proptosis
3 main types of lacrimal gland tumours?
- lymphoid/psuedo tumours- 50%
- pleomorphic adenoma- 25%
- malignant- 25%
What is a pleomorphic lacrimal gland adenoma?
- benign- adult
- epithelial tumour of lacrimal gland- orbital lobe
- sx: painless, proptosis, ophthalmoplegia, slow progression
- tx: excision
What are the 3 types of malignant lacrimal gland tumours?
- pleomorphic adenocarcinoma- 20%
- adenocystic carcinoma- 60%
- mucoepidermoid carcinoma- 20%
What is an adenoid cystic carcinoma?
Most common tumor to spread to the orbit?
- rare childhood oribal metastases
- sx: abrupt, bilateral, ptoptosis, superior orbital mass, raccoon eyes
- childhood orbital metastases
- localised tumour of myeloid cells
- rapid prop, lie edema, ecchymosis,
Langerhans cell granulomatosis?
- VERY RARE child orbital metastases
- may destroy orbital bone via imflammatory lesions
- maxillary: most common, face pain and swelling, nasal discahrge, nosteplead, dystopia, epiphora, diplopia
- ethmoidal: lateral dystopia
- nasopharyngeal: poptosis