oral cavity Flashcards
1
Q
most common cancer of oral cavity in world
A
ca tongue (lateral border )
2
Q
most common cancer of oral cavity in india
A
buccal mucosa lip 》ant tongue
3
Q
mc type of oral cancer
A
scc
4
Q
mc site of CA lip
A
vermilion of lower lip
5
Q
mcc site tongue cancer
A
lateral border
6
Q
mcc site of cheek carcinoma
A
angle of mouth
7
Q
abbe estlander flap is used
A
lip carcinoma
8
Q
most common benign salivary gland tumor
A
pleomorphic adenoma
9
Q
80% parotid pleomor0hic adenoma arise in
A
superficial lobe
10
Q
wht is dentigerous cyst
A
cyst which
envelopes whole or part of crown of unerupted permanent tooth
11
Q
mc site for dentigerous cyst
A
mandibular 3rd molar tooth
12
Q
radiographic findings of dentigerous cyst
A
unilocular cyst or soap bubble
apperaence
13
Q
egg shell crackling is seen in
A
dental cyst
14
Q
only salivary tumor more common in men
A
warthin tumor
15
Q
most common malignant salivary glands tumor in children
A
mucoepidermoid tumor
16
Q
mc malignant tumor of parotid
A
mucoepidermoid tumor
17
Q
most common radiation induced neoplasm
A
mucoepidermoid tumor mcc site parotid gland
18
Q
IOC FOR salivary gland tumors
A
FNAC
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
20
Q
brachial fistulas are derived from wht ???
A
2nd brachial arch
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
22
Q
brachial cyst r found ?
A
anterior and deep ro upper third of sternocleidomastoid
23
Q
ishtmus of thyroid is formed from ??
A
remnants of thyroglossal tract
24
Q
treatment for thyroglossal tract
A
sistrunk operations
25
lefort type 1 #
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
26
lefort type 2#
floor of maxilla 》through zygomatic maxillary suture line 》floor of orbit 》lacrimal bone 》nasion
27
nerve damage with lefort 2 #
infraorbital nerve
28
line of # of lefort type 3 passes through
root of nose 》ethmofrontal junction 》sup orbital fissure》lateral wall of orbit 》 zygomaticotemporal suture 》upper oart of pterygoid
29
most common # of facial bone
nasal bone 》zygomatic #
30
3 places of break in zygomatic #
zygomaticotemporal zygomaticofrontal
| infraorbital rim
31
mcc cause of csf rhinorrohea
iatrogenic trauma surgery
32
signs of csf rhinorrohea
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
33
biochemical tests for csf examinations
glucose and chloride concentration b2 transferrin
| beta trace protein
34
only test which confirms csf rhinorrohea
beta 2 transferrin
35
tear drop sign is seen in ?
blunt trauma to orbit leads to increase in intraorbital pressure
there is herniation of orbital contents into maxillary antrum
36
dingmans classification is for
mandible #
37
mc mandibular #
condylar #》angle 》body》symphysis
38
level 1 lymph node neck
submental and submandibular
39
level2,3,4,5,6,7ln
```
2 upper 3 middle 4 lower IJV
nodes 5 in post 🔺️
6 pretracheal prelaryngeal
7
mediastinal nodes below suprasternal notch
```
40
vestibule is found where
larynx
ear ( in the bony labrynth )
oral cavity
41
mc ln enlarged in tongue malignancy
submandibular
42
12 nerve palsy shifts tongue towards
paralysed side on protusion of tongue due to action of opposite side genoglossus
43
1st most imp step in management of faciomaxillary surgery
airway management
44
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 ??
infectious mononucleosis
45
gold standard for diagnosing infectious mononucleosis
EBV antibodies
46
beh'cet syndrome is ?
```
oculogenital syndrome
•apthous ulcers
punched out in oral cavity
•genital ulcer
•uveitis
```
47
black membrane in mouth
vincets angina
48
greyish white membrane with b/l cervical lymphadenopathy
diphtheria
49
cystic translucent swelling infloor of mouth
ranula
50
opaque swelling in midline in floor of mouth
dermoid cyst
51
wickam s striae
lichen planus
52
taste buds are highest in?
circumvallate papillae 》
foliate papillae 》fungiform papillae
no buds in felliform papillae
53
battle sign
mastoid ecchymosi is an indication of #of post or middle cranial fossa
often associated with racoon eyes
54
trench mouth is
vincets angina
55
best test to detect csf leak is
intrathecal radionucleotide test
56
most commonly used flaps for head and neck reconstruction
pectoralis major myocutaneus flap
57
chevallet #
runs verticall as blow from below
58
jarjavay #
horizontal
59
mc cause of viral oral ulcer
hsv 1
60
painless oral ulcers r seen in
syphilis
61
mc premalignant condition of oral cancer
leukoplakia
62
premalignant condition with highest risk of oral ca
erythroplakia
63
wht happens with obstruction of sublingual gland and submandibular gland and parotid gland duct
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
most common histological variety of oral cancer
scc
65
most common histological variety of upper lip ca
bcc
66
oral malignancy with best prognosis
lip
67
most common site for ca lip
lower lip
68
oral malignancy with worst prognosis
floor of mouth
69
oral cavity include wht??
* lip
* gums
* buccal mucosa
* retromolar trigone
* hard palate
* ant 2/3 tongue
* floor of mouth
70
most common tumor of salivary gland
pleomorphic adenoma
71
mc benign tumor of salivary gland
pleomorphic adenoma
72
mc malignant tumor of major salivary gland
mucoepidermoid
73
mc malignant tumor of minor salivary gland
adenoid
| cystic ca
74
stone formation mc involves
submandibular 》parotid
75
IOC to detect salivary gland stones
CT scan
76
most common ln involved in any oral malignancy
submandibular ln
77
mc site for all salivary gland cancer is parotid except
* adenoid cystic ca 》mc site minor salivary gland
| * scc 》mc site submandibular gland
78
Toc for adenolymphoma
adenolymphoma ie warthin tumor
| toc is superficial parotidectomy
79
another name fir warthin tumor
papillary cystadenoma lymphomatosum
or
adenolymphoma
80
do we biopsy for warthin tumor
no it is only salivary tumor tht produces hot spot in 99Tcm
| • it never involves facial nerve ie never becomes malignant
81
warthin tumor involves M/F
Males
82
pleomorphic adenoma is mc tumor of submandibular gland T/F
T
83
quincke's ds is
acute edema of uvula
84
which lefort #causes csf rhinorrohea
lefort 2 and 3
85
which lefort # causes complete separation of facial and cranial bones
lefort 3 causes cranial facial dissociation
86
mc area of # leads to csf rhinorrohea
#of cribriform plate of ethmoid
other # leading to csf rhinorrohea r
•lefor2,3
•nasal #class 3
87
most common site of mandibular #
```
C condyle A
angle
B
body
S
symphysos
```
88
inferior alveolar nerve is damaged in mandibular #
yes leading to anaesthesia around lower lip
89
andy gump deformity is ??
absence of ant mandibular arch ie absent chin and lower lip
90
marginal mandibulectomy
removal of superior portion of mandible in vertical phase keeps outer /lower rim intact to maintain cosmesisn
91
veins involved in spread of infection to cavernous sinus
facial vein
pterygoid plexus
superior opthalmic vein
92
imaging modality of choice to detect csf rhinorrohea
T2 weighted MRI
93
which head abd neck tumor has most commonly perineural invasions
adenoid cystic carcinoma and thus causes pain and 7 th nerve paralysis
