Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

OPTIC NERVE ANOMALIES > ONH - COMPRESSIVE OPTIC NEUROPATHY (TUMORS) > Flashcards

ONH - COMPRESSIVE OPTIC NEUROPATHY (TUMORS) Flashcards

1
Q

what are general symptoms of compressive optic neuropathy?

A
  1. slow progressive vision loss
  2. dyschromatopsia
  3. painless proptosis
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what are general ophthalmic signs of compressive optic neuropathy?

A
  1. ON pallor /edema / cupping
  2. collateral vessels
    • APD
  4. VF defects
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

best way to dx compressive optic neuropathy?

A

MRI

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

what is optic nerve glioma?

A

tumor involving the ON glial tissue

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

what are the 2 types of ON glioma?

A

1. glioblastoma multiforme – rare malignant form found in adults that leads to blindness within months and death within a year.
2. juvenile pilocytic astrocytoma – most common intrinsic neoplasm of the ON that is typically dx in children & associated with neurofibromatosis 1.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

signs of ON glioma?

A
  • general signs + ON enlargement
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

tx for ON glioma?

A
  • stable w/ no vision changes & no cosmetic distubrance – monitor
  • if unstable – surgical excision + chemotherapy
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

what is ON sheath meningioma?

A

tumor of the ON meninges or ON sheath

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

who gets them?

A

middle aged women

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

additional signs of ON sheath meningioma?

A
  • tumor may compress the globe and cause:
  • EOM restriction
  • increased IOP
  • metamorphopsia
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

tx for ON sheath meningioma?

A
  • treat IOP
  • radiation + chemo or surgical excision
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

what is a pituitary gland tumor (PG tumor)?

A

tumor that involves the pituitary gland

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

what area does a pituitary gland tumor compress?

A

optic chiasm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

additional symptoms of PG tumor?

A
  • HA
  • reduced libido
  • malaise
  • infertility
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

signs of PG tumor?

A
  • bitemporal hemianopia VF defects
  • optic atrophy
  • APD
  • pituitary apoplexy
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

what is pituitary apoplexy?

A
  • rupture of the pituitary tumor which causes a pool of blood and can lead to pt having a stroke.
17
Q

tx for PG tumor?

A
  • refer to neurosurgeon – surgical excision, radiation or hormone replacement therapy.
  • pituitary apoplexy – tx with systemic steroids & surgical decompression
18
Q

what is optic disc melanocytoma?

A

benign melanocyte tumor of the ON – can rarely become metastatic

19
Q

who gets optic disc melanocytoma?

A
  • darkly pigmented >50 yr old patients
20
Q

symptoms of optic disc melanocytoma

A

asymptomatic

21
Q

signs of optic disc melanocytoma

A
  • jet-black area with fuzzy edges found adjacent to the ON
  • may be flat or slighlt elevated
22
Q

tx for optic disc melanocytoma

A

observe or refer to oncologist is malignant characteristics.

OPTIC NERVE ANOMALIES (6 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions