Neuro04

Question 1

(1)

(Mechanisms of Altered Tissue Function)

goodness… just read this one…

Armien you need to

Answer 1

Question 2

(2)

Answer 2

Question 3

i t(3)

think

this is

for

reference

only

Question 4

(4)

(Astrocytoma, Anaplastic Astrocytoma, and Glioblastoma)

1. most common glial neoplasm

most commonl tumor in what?

2. most common in what age?

(Gross)

1. located where in brain?
2. appearance and texture depends on what?
3. demarcation?

firmness depends on what?

(Histology)

1. low grade astrocytomas = ?

medium grade astrocytoma = ?

high grade astrocytoma = ?

Answer 4

1. dog in USA
2. aged dogs and cats (most common is neuroectodermal)
3. anywhere
4. degree and type of differentioan
5. variable

histiologic variant

1. well-differentiated

anaplastic

glioblastoma

Question 5

(5)

(Oligodendroglioma and Anaplastic Oligodendroglioma)

1. most common in what animal?
2. most common glial tumor in the dog where?

(Gross)

1. located where?
2. tumors are of what orientation

may have a tendency to grow into what?

3. What may occur following penetration of the ventricles?
4. Frequently large, well demarcated, grey to pink, soft. Hemorrhage/edema and a mucinous consistency is common.

(histology)

1. oligodendroglioma and anaplastic oligodendroglioma

Answer 5

1. dogs
2. Europe
3. anywhere in brain
4. periventricular (those arising from periventricular white matter)

the ventricles

3. CSF dissemination

Question 6

(06)

(Choroid Plexus Papilloma and Carcinoma)

1. most common in what animal?

(gross)

2. in what ventricles?

most common?

potential for what?

3. Well-demarcated, grey-white to red, soft granular to cauliflower-like masses protruding into the ventricular lumen.

Answer 6

1. dog
2. 3rd, 4th, and lateral ventricles

4th

CSF dissemination

Question 7

(7)

(Ependymoma and Anaplastic Ependymoma)

1. how common?

(gross)

1. ventricular orientation - most often associated with what?
2. Moderatelywelldemarcated, soft, greyish-pink, protruding into the ventricular system.

CSF dissemination may occur….

repeat….

CSF dissemination may occur….

Answer 7

1. least common glial neoplasm
2. lateral ventricles and central canal of spinal cord

Question 8

(08)

(Meningeal Neoplasms) - Meningioma)

1. most common primary intracranail tumor of what?

(gross)

2. dog: solitary - what origin?

what kind of growth?

3. cat: 40% are multiple - of what origin?
4. Expansile growth. Firm, grey-white plaque/nodule, well demarcated, +/- granular calcifications (psammoma bodies).
5. then look at the rest!! woo-hoo vet school is such a blast

Answer 8

1. animals
2. arachnoid origin (esp basal sites)

expansile, often with significant infiltration

3. arachnoid or tela choroidea origin (3rd ventricles)

Question 9

(09)

then begins the quiz that he never gave us the answer to

Question 10

(10)

(Meningiomas)

(meningeal formation)

1. what origin?
2. histio?

(etiology)

3. what two?

(immunohistochemistry)

1. vimentin predominantly postivie
2. epi membrane antigen
3. cytokeratin
4. sex steroid hormone receptors
5. i haven’t a clue what any of that is supposed to mean

Answer 10

1. neuro crest and mesoderm
2. very diverse!!
3. gene mutations (NF2), radiation

Question 11

(Canine Meningioma)

(11)

Question 12

(12)

(Secondary tumors)

1. what % of all CNS neoplasms?
2. extension from what?

carcinomas of what?

osteroma/osterosarcoma

3. hemotogenous metastasis

mammary carcinoma - common in what?

lymphosarcoma - common in what?

hemangiosarcoma

Answer 12

1. 30-50%
2. surrounding structures

ethmoid tissues, nasal and paranasal sinuses

3. K9, Fe

Fe