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ENT > oral cavity > Flashcards

oral cavity Flashcards

1
Q

most common cancer of oral cavity in world

A

ca tongue (lateral border )

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2
Q

most common cancer of oral cavity in india

A

buccal mucosa lip 》ant tongue

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3
Q

mc type of oral cancer

A

scc

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4
Q

mc site of CA lip

A

vermilion of lower lip

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5
Q

mcc site tongue cancer

A

lateral border

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6
Q

mcc site of cheek carcinoma

A

angle of mouth

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7
Q

abbe estlander flap is used

A

lip carcinoma

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8
Q

most common benign salivary gland tumor

A

pleomorphic adenoma

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9
Q

80% parotid pleomor0hic adenoma arise in

A

superficial lobe

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10
Q

wht is dentigerous cyst

A

cyst which

envelopes whole or part of crown of unerupted permanent tooth

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11
Q

mc site for dentigerous cyst

A

mandibular 3rd molar tooth

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12
Q

radiographic findings of dentigerous cyst

A

unilocular cyst or soap bubble

apperaence

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13
Q

egg shell crackling is seen in

A

dental cyst

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14
Q

only salivary tumor more common in men

A

warthin tumor

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15
Q

most common malignant salivary glands tumor in children

A

mucoepidermoid tumor

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16
Q

mc malignant tumor of parotid

A

mucoepidermoid tumor

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17
Q

most common radiation induced neoplasm

A

mucoepidermoid tumor mcc site parotid gland

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18
Q

IOC FOR salivary gland tumors

A

FNAC

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19
Q

middline swelling of neck

A 
ludeigs angina 
enlarged submental ln 
sublingual dermoid 
lipoma 
thryglossal cyst 
subhyoid bursitis 
goiter 
lipoma 
retrosternal goitre 
thymus swelling
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20
Q

brachial fistulas are derived from wht ???

A

2nd brachial arch

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21
Q

opening of brachial fistula

A

external opening in lowe third of neck near ant border of sternocleidomastoid and int orifice in tonsillar fossa

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22
Q

brachial cyst r found ?

A

anterior and deep ro upper third of sternocleidomastoid

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23
Q

ishtmus of thyroid is formed from ??

A

remnants of thyroglossal tract

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24
Q

treatment for thyroglossal tract

A

sistrunk operations

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25
Q

lefort type 1 #

A

separates palate from midface and on xray appear as floating palate

line passes from lower part of maxilla on both sides and floor of nose anteriorly to pterygoid plate posteriorly

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26
Q

lefort type 2#

A

floor of maxilla 》through zygomatic maxillary suture line 》floor of orbit 》lacrimal bone 》nasion

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27
Q

nerve damage with lefort 2 #

A

infraorbital nerve

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28
Q

line of # of lefort type 3 passes through

A

root of nose 》ethmofrontal junction 》sup orbital fissure》lateral wall of orbit 》 zygomaticotemporal suture 》upper oart of pterygoid

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29
Q

most common # of facial bone

A

nasal bone 》zygomatic #

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30
Q

3 places of break in zygomatic #

A

zygomaticotemporal zygomaticofrontal

infraorbital rim

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31
Q

mcc cause of csf rhinorrohea

A

iatrogenic trauma surgery

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32
Q

signs of csf rhinorrohea

A
  1. reservior sign when pt is made to sit up there is sudden gush of csf from nose
  2. Handkerchief sign
  3. double /halo sign
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33
Q

biochemical tests for csf examinations

A

glucose and chloride concentration b2 transferrin

beta trace protein

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34
Q

only test which confirms csf rhinorrohea

A

beta 2 transferrin

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35
Q

tear drop sign is seen in ?

A

blunt trauma to orbit leads to increase in intraorbital pressure
there is herniation of orbital contents into maxillary antrum

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36
Q

dingmans classification is for

A

mandible #

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37
Q

mc mandibular #

A

condylar #》angle 》body》symphysis

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38
Q

level 1 lymph node neck

A

submental and submandibular

39
Q

level2,3,4,5,6,7ln

A 
2 upper 3 middle 4 lower IJV
nodes 5 in post 🔺️
6 pretracheal prelaryngeal
7
mediastinal nodes below suprasternal notch
40
Q

vestibule is found where

A

larynx
ear ( in the bony labrynth )
oral cavity

41
Q

mc ln enlarged in tongue malignancy

A

submandibular

42
Q

12 nerve palsy shifts tongue towards

A

paralysed side on protusion of tongue due to action of opposite side genoglossus

43
Q

1st most imp step in management of faciomaxillary surgery

A

airway management

44
Q

14 yr old boy prsented with sore throat fever and cervical lymphadenopathy throat swab was +for grp b strep and wad was put on penicillin developed rubbeliform rash
dx is ??

A

infectious mononucleosis

45
Q

gold standard for diagnosing infectious mononucleosis

A

EBV antibodies

46
Q

beh’cet syndrome is ?

A 
oculogenital syndrome 
•apthous ulcers 
punched out in oral cavity 
•genital ulcer 
•uveitis
47
Q

black membrane in mouth

A

vincets angina

48
Q

greyish white membrane with b/l cervical lymphadenopathy

A

diphtheria

49
Q

cystic translucent swelling infloor of mouth

A

ranula

50
Q

opaque swelling in midline in floor of mouth

A

dermoid cyst

51
Q

wickam s striae

A

lichen planus

52
Q

taste buds are highest in?

A

circumvallate papillae 》
foliate papillae 》fungiform papillae

no buds in felliform papillae

53
Q

battle sign

A

mastoid ecchymosi is an indication of #of post or middle cranial fossa
often associated with racoon eyes

54
Q

trench mouth is

A

vincets angina

55
Q

best test to detect csf leak is

A

intrathecal radionucleotide test

56
Q

most commonly used flaps for head and neck reconstruction

A

pectoralis major myocutaneus flap

57
Q

chevallet #

A

runs verticall as blow from below

58
Q

jarjavay #

A

horizontal

59
Q

mc cause of viral oral ulcer

A

hsv 1

60
Q

painless oral ulcers r seen in

A

syphilis

61
Q

mc premalignant condition of oral cancer

A

leukoplakia

62
Q

premalignant condition with highest risk of oral ca

A

erythroplakia

63
Q

wht happens with obstruction of sublingual gland and submandibular gland and parotid gland duct

A

obstruction of sublingual gland duct leads to formation of ranula
obstruction of submandibular and parotid leads to there atrophy
as sublingual gland secretes saliva continously whereas submandibular and parotid gland secretes saliva only in response to food

64
Q

most common histological variety of oral cancer

A

scc

65
Q

most common histological variety of upper lip ca

A

bcc

66
Q

oral malignancy with best prognosis

A

lip

67
Q

most common site for ca lip

A

lower lip

68
Q

oral malignancy with worst prognosis

A

floor of mouth

69
Q

oral cavity include wht??

A
  • lip
  • gums
  • buccal mucosa
  • retromolar trigone
  • hard palate
  • ant 2/3 tongue
  • floor of mouth
70
Q

most common tumor of salivary gland

A

pleomorphic adenoma

71
Q

mc benign tumor of salivary gland

A

pleomorphic adenoma

72
Q

mc malignant tumor of major salivary gland

A

mucoepidermoid

73
Q

mc malignant tumor of minor salivary gland

A

adenoid

cystic ca

74
Q

stone formation mc involves

A

submandibular 》parotid

75
Q

IOC to detect salivary gland stones

A

CT scan

76
Q

most common ln involved in any oral malignancy

A

submandibular ln

77
Q

mc site for all salivary gland cancer is parotid except

A
  • adenoid cystic ca 》mc site minor salivary gland

* scc 》mc site submandibular gland

78
Q

Toc for adenolymphoma

A

adenolymphoma ie warthin tumor

toc is superficial parotidectomy

79
Q

another name fir warthin tumor

A

papillary cystadenoma lymphomatosum
or
adenolymphoma

80
Q

do we biopsy for warthin tumor

A

no it is only salivary tumor tht produces hot spot in 99Tcm

• it never involves facial nerve ie never becomes malignant

81
Q

warthin tumor involves M/F

A

Males

82
Q

pleomorphic adenoma is mc tumor of submandibular gland T/F

A

T

83
Q

quincke’s ds is

A

acute edema of uvula

84
Q

which lefort #causes csf rhinorrohea

A

lefort 2 and 3

85
Q

which lefort # causes complete separation of facial and cranial bones

A

lefort 3 causes cranial facial dissociation

86
Q

mc area of # leads to csf rhinorrohea

A

of cribriform plate of ethmoid

other # leading to csf rhinorrohea r
•lefor2,3
•nasal #class 3

87
Q

most common site of mandibular #

A 
C condyle A 
angle 
B
body 
S
symphysos
88
Q

inferior alveolar nerve is damaged in mandibular #

A

yes leading to anaesthesia around lower lip

89
Q

andy gump deformity is ??

A

absence of ant mandibular arch ie absent chin and lower lip

90
Q

marginal mandibulectomy

A

removal of superior portion of mandible in vertical phase keeps outer /lower rim intact to maintain cosmesisn

91
Q

veins involved in spread of infection to cavernous sinus

A

facial vein
pterygoid plexus
superior opthalmic vein

92
Q

imaging modality of choice to detect csf rhinorrohea

A

T2 weighted MRI

93
Q

which head abd neck tumor has most commonly perineural invasions

A

adenoid cystic carcinoma and thus causes pain and 7 th nerve paralysis

ENT (5 decks)

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