Tumors Of Ear

Question 1

Most common benign tumor of CP Angle

Answer 1

Acoustic neuroma

Question 2

Acoustic neuroma arises from

Answer 2

Inferior vestibular nerve in internal acoustic meatus

Question 3

Is acoustic neuroma benign or malignant

Answer 3

Benign but locally invasive

Question 4

Symptoms of acoustic neuroma when it is present in IAM

Answer 4

Unilateral SNHL tinnitus

Question 5

Hitzelberger sign?

Answer 5

Hypoaesthesia to PS Eam due to compression of facial nerve by acoustic neuroma

Question 6

Which tumor is ass with b/L acoustic neuroma in young

Answer 6

Neurofibramatosis 1

Question 7

Loss of corneal reflex in acoustic neuroma occurs due to

Size of tumor when this occurs

Answer 7

Trigeminal nerve

2.5cm

Question 8

Finding of bera in acoustic neuroma

Answer 8

Increased latency bw 1&5 , 1&3

Interaural latency diff of wave more than 0.2 ms

Question 9

Best investigation for acoustic neuroma

Answer 9

Gadolinium enhanced mri

Ice cream cone appearance

Question 10

Qhow to test for origin of acoustic neuroma

Answer 10

Vemp test
Ovemp-SVN
Cvemp -IVN

Question 11

When to use gamma knife to remove tumor

Answer 11

Size 1.5-3 cm

All cystic tumor surgical excision

Question 12

Histo finding of acoustic neuroma

Answer 12

Antoni type A compact

TYPE B cystic spaces poor prognosis

Question 13

Mgt if post surgical removal of acoustic neuroma u/l hearing loss occurs
If b/l

Answer 13

Baha or hearing aid

Auditory brainstem implant

Question 14

Abi is placed in

Answer 14

Lateral recess of 4th ventricle

Stimulate cochlear nuclei

Question 15

Surfers ear

Answer 15

Exostosis mc benign tumor of eac

Question 16

Glomus arises from?

Answer 16

Paraganglioma

Multicentric 10%

Question 17

Types of glomus

Mc benign tumor of middle ear

Answer 17

Glomus tympanicum, jugulare, vagale, carotid body tumor

Most common tympanicum

Question 18

Head and neck glomus are usually chromaffin staining or not

Answer 18

Non Chromaffin staining

Catecholamine secreting tumor are chromium salt staining

Question 19

Why is urine vma done in glomus

Answer 19

Increase level - paraganglioma else where also

To prep pt before surgery by treating htn

Question 20

Main symptoms of glomus

Answer 20

Chl

Pulsatile tinnitus due to Ica pulse transmission

Question 21

Appearance of TM in glomus

Answer 21

Rising/Setting sun /red reflex

Question 22

Aquino sign in seen in

Answer 22

Glomus

On compression of ICA pulsatile tinnitus ceases

Question 23

Diagnostic sign in glomus

Answer 23

Brown’s sign/ pulsation sign

Question 24

Best investigation for glomus

Phleps sign?

Answer 24

HRCT
Phleps sign (absence of crest of bone bw jugular bulb and ica )

Question 25

Fisch classification of glomus

Answer 25

``` A mid ear B mid ear plus mastoid C 1limited vertical canal invo 2 extensive vertical carotid canal invo 3 horizontal carotid canal invo D intra cranial ```