CSOM

Question 1

Parts of Malleus ?

Answer 1

“S-m-AL L” Malleus + Head & neck

Short process
Anterior process
Lateral process

Long process/ Manubrium

Question 2

Parts of incus ?

Answer 2

Short process

Body

Long process

Lenticular process

Question 3

Parts of Stapes ?

Answer 3

Head
Neck
Ant & post crus (pronounced as kroos)
Footplate

Question 4

M/C Perforation site in Tubotymphanic ?

Answer 4

AI

MIDDLE EAR EXPOSED - Mesotymphanuium and Eustacian tube

Question 5

M/c Perforation site in atticoantral ?

Answer 5

Posterior superior

Attic
Antrum
Mastoid

Hence bone erosion, granulation and cholesteoma

Question 6

Type of hearing losses in Csom ?

Answer 6

Mild to mod CHL …rarely above 50 in safe

Mixed or CHL in unsafe

Question 7

Tymphanosclerosis ?

Answer 7

Hyalinization and subsequent calcification of subepithelial connective tissue

Question 8

M/c causes of Tubotyphanic

Answer 8

Beta Haemolytic streptococcus(m/c)

Pseudomonas
Proteus
Ecoli

Stap aures
Bacteroids

Question 9

Squamosal active and inactive ?

Answer 9

Active cholesteoma

Inactive - Retraction pockets
(Discharge only if debris get infected)

Question 10

Paradoxical hearing because of discharge ? Called and seen in ?

Answer 10

Seen in Tubotymphanic

Round window shielding

Question 11

Chlesteoma hearer

Answer 11

Cholesteoma bridges gap caused by destructed ossicles

Question 12

2 main pathological process in mastoiditis ?

Answer 12

1) Production of pus under tension
(Fesilitated by swollen mucosa of antru and attic )

2) hyperemic decalcification
(Hyperemic mucosa causes mastoid wall decalcification)

Lead to empysema of mastoid

Question 13

Ironed out mastoiditis

Answer 13

Due to odema and thickening of periosteium of post auricular

Obliteration of retroauricular sulcus

DOWNWARD AND FORWARD pushing of pinna

Subperiosteal abscess

Question 14

Signs of Mastoiditis

Answer 14

Mastoid tenderness

Lighthouse discharge

Sagging of postsup meatal wall (periostitis of wall between eac and antrum)

Ironed out mastoid

Small perforation

Question 15

Simple mastoidectomy AKA

Answer 15

Cortical

Conservative

Schwstz operation

Question 16

Simple mastoidectomy principle

Answer 16

Drain only Mastoid

Preserve Post Meatal Wall

Question 17

Modified Radical mas toidectomy Principle

Answer 17

Extends to middle ear cavity

Remove Post mental and lateral wall of ear

converts Mastoid, Attic & External ear to one large cavity

DOES NOT AFFECT HEARING

Question 18

Gardenigo syndrome seen in ?

Answer 18

Petrositis (infection of petrous part of temporal bone)

Question 19

3 Ds of Gardengio syndrome ?

Answer 19

DIPLOPIA (6th nerve Palsy causes External Rectus palsy )

DEEP seated / retro orbital pain (Trigeminal neuralgia )

Discharge from ear - persistent

Question 20

Views for Petrotitis

Answer 20

Towne’s (also used in egales syndrome)

Stenver’s view (modified version used in cochlear implant)

Question 21

Otitis media causes what type of facial palsy ?

Answer 21

Infranuclear palsy

Question 22

Temporal abscess causes what type of facial palsy ?

Answer 22

Supranuclear palsy

Question 23

M/c abscess post mastoiditis

Answer 23

Postauricular abscess.

Question 24

Meatal abscess aka

Answer 24

Luc abscess

Question 25

Abscess toward the occipital bone

Answer 25

Citelli’s abscess

(Sometimes of the digastric triangle)

Question 26

Transient vertigo on pressure on Tragus or valsalva + Nystagmus towards affected
ear

Answer 26

Circumscribed Lablynthitis
(Thinning/ erosion of Bony capsule of labyrinthitis)

Question 27

m/ c canal eroded in Fistula of Labyrinth

Answer 27

Horizontal Semicircular

Question 28

Mild vertigo+ SNH loss+ reversible

Answer 28

Diffuse Serous type

from pre-existing circumcised

Question 29

Severe ‘vertigo + vomitting + Spontaneous nystagmus towards healthy side+ Total loss of Leaving

Answer 29

Diffuse Suppurative labrynthitis

followed from Serous