Schwannoma

Question 1

Does schwannoma common to have cystic, fatty degeneration and hemorrhagic necrosis?

Answer 1

Yessssss

Question 2

What histologic type of schwannoma are loosely textured stroma with widely seperated stellate cells and no distinctive pattern?

Antoni A
Antoni B
Antoni C

Answer 2

Antoni A - compact interlacing bundles of fusiform neoplastic Schwann cells, reticulin and collagen. Well-developed cylindrical structures with palisading nuclei around a central core of cytoplasm, the classic “Verocay bodies”

Antoni B - loosely textured stroma with widely seperates stellate cells and no distinctive pattern

Antoni C - ไม่มี

Question 3

Does acoustic Schwannoma is the most common CP angle mass?

Answer 3

Yessss

Question 4

Please ranking the commonest the cranial nerve involvement of Schwannoma?

1 2 3 4 5 6 7 8 9 10 11 12 13

Answer 4

8 is the commonest
5 is the second,
(จึงเปน most common nonacoustic schwannoma)
7 is the third

1 and 2 cranial nerves not composed of Scwann cells

There is no cranial nerve 13

Question 5

Ranking from the commonest in Facial palsy?

Trauma , HZV , Otitis media , 
Bell palsy(idiopathic) , Schwannoma

Answer 5

Bell palsy(idiopathic)
HZV 
Otitis media 
Trauma 
Schwannoma

Question 6

Multiple and bilateral Schwannoma are characteristic of NF 1 or 2?

Answer 6

NF 2☆☆☆

NF 2 also related with multiple meninguoma and childhood meningioma.

NF 1 related with Optic nerve glioma

(＞人＜;)

Question 7

Between children - young - older age

Which is the most common aging presentation of SWN .?

Answer 7

Older age → adult →Children

Question 8

Does it true about?

The patient with CN8 SWN,
the earliest symptoms are tinnitus and hearing loss are from cochlear nerve involvement.

Answer 8

No, it involve vestibular segment but present with tinnitus and SNHL first..

Σ（ﾟдﾟlll）
Cochlear SWN is rare..

Question 9

In the nerve sheath of axon which comprised of schwann cell and oligodendrocyte

Which location does SWN most likely arise from?
A Schwann cells
B Oligodendrocyte
C Junction between 
    Schwann cells & Oligodendrocyte

Answer 9

C จ้า

A พอให้อภัย

B ไปตายซะ