Orbit, Eyelids and Lacrimal system 3 Flashcards
1
Q
list adult orbital tumors
A
- dermal cysts
2. cavernous hemangioma
2
Q
most common benign neoplasm in adults
A
cavernous hemangioma
3
Q
cavernous hemangioma
A
- Slowly progressive proptosis
2. Often in middle aged women
4
Q
cavernous hemangioma located
A
- Retinal striae
- hyperopia (farsightedness)
- optic nerve compression
- increased IOP
- strabismus
5
Q
cavernous hemangioma is diagnosed with
A
CT or MRI – well encapsulated mass that is enhancing with vasculature on MRI
6
Q
Neural Tumors affecting the orbit
A
- Meningiomas (primary orbital)
- Mengangiomas (sphenoid wing)
- Schwannoma
- Neurofibroma
- Optic nerve glioma
7
Q
Meningiomas (primary orbital)
A
- Less common
- Usually along arachnoid of optic sheath
- Women in 3rd and 4th decades of life
- Gradual, unilateral loss of vision, painless
8
Q
Meningiomas (primary orbital)
treatment
A
- Observe if no vision loss or spread
- Radiation if confined to orbit
- Surgery if severe vision loss and profound proptosis
9
Q
Mengangiomas (Sphenoid wing)
A
- Hyperplasia of soft tissue and bone
- Crawls along lateral wall of orbit
- Dural tail
10
Q
Mengangiomas (Sphenoid wing) Treatment
A
- Observe until functional problem
- Subtotal resection
- Post-op radiotherapy to reduce recurrence
11
Q
Schwannoma
A
- Proliferation of Schwann cells encapsulated by perineurium
- Biphasic pattern or solid areas and myxoid areas
- Hypercellular
- Excised easily
12
Q
Lymphoproliferative Disorders
treatment
A
- Radiotherapy
- Surgery not curative as these are infiltrative
- Chemo if aggressive
13
Q
Lymphoproliferative Disorders
A
- can involve orbit
- Usually B cell tumor
a. Hodgkin and NH Lymphoma
b. Malignant NH Lymphoma very common lymphoproliferative disease of orbit! - T-cell tumors are rare
14
Q
4 most common lymphomas that go to orbit:
A
- MALT
- CLL
- Follicular center lymphoma
- High grade lymphoma
15
Q
Lacrimal Gland tumors
A
Epithelial tumors or non epithelial tumors
