Carcinoma of Oral Cavity

Carcinoma of Oral Cavity

Q. 1

 Referred otalgia can be due to

 A

Carcinoma larynx

 B

Carcinoma oral cavity

 C

Carcinoma tongue

 D

All of the above

Q. 1

 Referred otalgia can be due to

 A

Carcinoma larynx

 B

Carcinoma oral cavity

 C

Carcinoma tongue

 D

All of the above

Ans. D

Explanation:

 

Causes of referred otalgia

Ear receives nerve supply from Vth (auriculotemporal), 1Xth (tympanic br.) and Xth (auricular br.) cranial nerves; and from C2 (lesser occipital) and C2 and C3 (greater auricular), pain may be referred from these remote areas

1. Via Vth cranial nerve

  • Dental; Caries tooth, apical abscess, impacted molar, malocclusion.
  • Oral cavity; Benign or malignant ulcerative lesions of oral cavity or tongue.
  • Temporomandibular joint disorders; Bruxism, osteoarthritis, recurrent dislocation,  ill-fitting denture.
  • Sphenopalatine neuralgia.

2. Via IXth cranial nerve

  • Oropharynx; Acute tonsillitis, peritonsillar abscess, tonsillectomy. Benign or malignant ulcers of soft palate, tonsil and its pillars.
  • Base of tongue; Tuberculosis or malignancy.
  • Elongated styloid process.

3.   Via Xth cranial nerve. Malignancy or ulcerative lesion of: vallecula, epiglottis, larynx or laryngopharynx, esophagus.

4.   Via C2 and C3 spinal nerves. Cervical spondylitis, injuries of cervical spine, caries spine.


Q. 2

In which of the following head and neck cancers, is lymph node metastasis least common:

 A

Tongue

 B

Buccal mucosa

 C

Hard palate

 D

Lower alveolus

Q. 2

In which of the following head and neck cancers, is lymph node metastasis least common:

 A

Tongue

 B

Buccal mucosa

 C

Hard palate

 D

Lower alveolus

Ans. C

Explanation:

Hard palate [Ref: Recent advances in Surgery no. 25 p 741

Incidence of cervical metastasis in head and neck cancers (in decreasing order)

  • Tongue (most common)
  • Floor of mouth
  • Lower alveolus
  • Buccal mucosa
  • Upper alveolus
  • Hard palate

Q. 3

Referred otalgia is due to:

 A

Carcinoma larynx

 B

Carcinoma oral cavity

 C

Carcinoma tongue

 D

All of above

Q. 3

Referred otalgia is due to:

 A

Carcinoma larynx

 B

Carcinoma oral cavity

 C

Carcinoma tongue

 D

All of above

Ans. D

Explanation:

Q. 4

A 70 year old male who has been chewing tobacco for the past 50 years presents with a six months history of a large, fungating, soft papillary lesions in the oral cavity penetrating into the mandible. Lymph nodes are not palpable. Two biopsies taken from the lesion proper show benign appearing papillomatosis with hyperkeratosis and acanthosis infiltrating the subjacent tissues. The most likely diagnosis is:

 A

Squamous cell papilloma

 B

Squamous cell carcinoma

 C

Verrucous carcinoma

 D

Malignant mixed tumour

Q. 4

A 70 year old male who has been chewing tobacco for the past 50 years presents with a six months history of a large, fungating, soft papillary lesions in the oral cavity penetrating into the mandible. Lymph nodes are not palpable. Two biopsies taken from the lesion proper show benign appearing papillomatosis with hyperkeratosis and acanthosis infiltrating the subjacent tissues. The most likely diagnosis is:

 A

Squamous cell papilloma

 B

Squamous cell carcinoma

 C

Verrucous carcinoma

 D

Malignant mixed tumour

Ans. C

Explanation:

Verrucous carcinoma is also referred to as a giant condyloma accuminatum or buschke lowenstein tumor.

It is considered an intermediate lesion between condyloma accuminata and invasive squamous cell carcinoma.

These cancers tend to localize and are cured by wide excision, however they can undergo malignant transformation into an invasive squamous cell carcinoma.

Ref: Robbins Pathology 7th Edition, Page 1037 ; Ackerman’s Surgical Pathology 8th Edition, Page 235


Q. 5

Which of the following is the commonest site of oral cancer among Indian population ?

 A

Tongue

 B

Floor of mouth

 C

Alveobuccal complex

 D

Lip

Q. 5

Which of the following is the commonest site of oral cancer among Indian population ?

 A

Tongue

 B

Floor of mouth

 C

Alveobuccal complex

 D

Lip

Ans. C

Explanation:

The most common type of oral cancer in India is buccal mucosa (38%) followed by anterior tongue secondly (16%) and thirdly lower alveolus (15.7%).

So when the percentages of buccal mucosa and lower alveolus are combined it is alveobuccal complex (53.7%), the most common type of oral cancer in India.

Worldwide the most common type of oral cancer is the carcinoma of the lip and secondly carcinoma of the tongue.

Ref: Textbook of Preventive and Community Dentistry, 2nd Edition By SS Hiremath MDS, FICD (USA) 2nd Edition, Page 159; Global Clinical Trials: Effective Implementation and Management By Richard Chin, Menghis Bairu, Page 122.


Q. 6

Abbey-Estlander flap is used in the reconstruction of:

 A

Buccal mucosa

 B

Lip

 C

Tongue

 D

Palate

Q. 6

Abbey-Estlander flap is used in the reconstruction of:

 A

Buccal mucosa

 B

Lip

 C

Tongue

 D

Palate

Ans. B

Explanation:

Abbey-Estlander flap is used in the reconstruction of lip.

 
Ref: Schwartz Principles of Surgery, 8th Edition, Page 518

Q. 7

Abbe – Estlander Flap is used for:

 A

Lip

 B

Tongue

 C

Eyelid

 D

Ears

Q. 7

Abbe – Estlander Flap is used for:

 A

Lip

 B

Tongue

 C

Eyelid

 D

Ears

Ans. A

Explanation:

The Abbe – Estlander Flap is a transposition flap from the opposite lip.

In this reconstructive surgery the tissue is borrowed from the opposite lip at the oral commisure.

Lip reconstruction may be required after trauma or surgical excision.
 
Ref: CSDT, 12th Edition, Page 1238; Otolaryngology: The Essentials By Allen M. Seiden, Page 154

Q. 8

Which of the following is TRUE differential cause of referred otalgia?

 A

Carcinoma larynx

 B

Carcinoma oral cavity

 C

Carcinoma tongue

 D

All of the above

Q. 8

Which of the following is TRUE differential cause of referred otalgia?

 A

Carcinoma larynx

 B

Carcinoma oral cavity

 C

Carcinoma tongue

 D

All of the above

Ans. D

Explanation:

Otalgia can occur as a symptom of carcinoma on the base of tongue, pharynx or larynx.

 
Ear receives nerve supply from 4 cranial nerves such as trigeminal, facial, glossopharyngeal and vagus; and from two branches of cervical plexus called C2 (lesser occipital) and C2 and C3 (greater auricular), pain maybe referred from these remote areas.
 
Facial nerve refers pain to the external ear canal and post auricular region. Second and third cervical nerves refer pain to the postauricular and mastoid regions. 
 
Trigeminal referred otalgia arise from lesions involving the oral cavity and floor of mouth, teeth, mandible, temporomandibular joint, palate and pre auricular skin.
 
Glossopharyngeal referred otalgia arise from the tonsil, base of the tongue, soft palate, nasopharynx, Eustachian tube and pharynx.
 
Vagal referred otalgia arise from the hypopharynx, larynx and trachea.
 
Differential causes of referred otalgia includes migraine, TMJ syndrome, cervical myalgia, fibromyalgia, dental abscess, head and neck malignancy (neoplasm of nasopharynx, sinus, tonsil, base of tongue, hypopharynx), temporal arteritis, inflammatory sinusitis, carotidynia, trigeminal neuralgia, glossopharyngeal neuralgia and GERD.

Q. 9

A chronic tobacco chewer developed erythroplakia in the oral cavity.

Assertion: It is similar to leukoplakia except for its red colour but less malignant than leukoplakia.

Reason: The red colour is due to decreased keratinization.

 A

Both Assertion and Reason are true, and Reason is the correct explanation for Assertion

 B

Both Assertion and Reason are true, and Reason is not the correct explanation for Assertion

 C

Assertion is true, but Reason is false

 D

Assertion is false, but Reason is true

Q. 9

A chronic tobacco chewer developed erythroplakia in the oral cavity.

Assertion: It is similar to leukoplakia except for its red colour but less malignant than leukoplakia.

Reason: The red colour is due to decreased keratinization.

 A

Both Assertion and Reason are true, and Reason is the correct explanation for Assertion

 B

Both Assertion and Reason are true, and Reason is not the correct explanation for Assertion

 C

Assertion is true, but Reason is false

 D

Assertion is false, but Reason is true

Ans. D

Explanation:

Erythroplakia is similar to leukoplakia except for its colour.

Erythroplakia is a red patch or plaque on the mucosal surface. The red colour is due to decreased keratinization, and as a result the red vascular connective tissue of the submucosa shines through.

Malignant potential for erythroplakia is 17 times higher than in leukoplakia. Treatment is excision biopsy and follow up.


Q. 10

The most common pre-malignant condition of oral carcinoma is ‑

 A

Leukoplakia

 B

Erythroplakia

 C

Lichen planus

 D

Fibrosis

Q. 10

The most common pre-malignant condition of oral carcinoma is ‑

 A

Leukoplakia

 B

Erythroplakia

 C

Lichen planus

 D

Fibrosis

Ans. A

Explanation:

Ans. is ‘a’ i.e., Leukoplakia

o There are two premalignant lesions for oral Cancer ‑

i) Leukoplakia

ii) Erythroplakia

o Leukoplakia is the most common premalignant lesions.

o But, the risk of malignant transformation of erythroplakia is much higher than that seen with leukoplakia.

o The most common predisposing factor for both these conditions is smoking.


Q. 11

A 70 year old male who has been chewing tobacco for the past 50 years presents with a six months history of a large, fungating, soft papillary lesions in the oral cavity. The lesion has penetrated into the mandible. Lymph nodes are not palpable. Two biopsies taken from the lesion proper show benign appearing papillomatosis with hyperkeratosis and acanthosis infiltrating the subjacent tissues. The most likely diagnosis is –

 A

Squamous cell papilloma

 B

Squamous cell carcinoma

 C

Verrucous carcinoma

 D

Malignant mixed tumour

Q. 11

A 70 year old male who has been chewing tobacco for the past 50 years presents with a six months history of a large, fungating, soft papillary lesions in the oral cavity. The lesion has penetrated into the mandible. Lymph nodes are not palpable. Two biopsies taken from the lesion proper show benign appearing papillomatosis with hyperkeratosis and acanthosis infiltrating the subjacent tissues. The most likely diagnosis is –

 A

Squamous cell papilloma

 B

Squamous cell carcinoma

 C

Verrucous carcinoma

 D

Malignant mixed tumour

Ans. C

Explanation:

Ans. is ‘c’ i.e., Verrucuous carcinoma

Verrucuous carcinomas also referred to as giant condyloma accuminatum or Buschke-Lowenstein tumor are considered an intermediate lesion between candyloma accuminatum and invasive squamous cell carcinoma. It is important to distinguish verrucuous carcinoma from squamous cell carcinomas as these tend to remain localized and are cured by wide excision, however they may undergo malignant transformation in to invasive squammous cell carcinomas.

Features of verrucuous carcinomas

o Prediliction for males > 50 years

o Predisposed in tobacco users, poor oral hygiene

Gross                                                         Microscopic

o Large                                                 o Cytological features of malignancy are absent or minimal and rare

o Soft                                                   o Epithelium is thickened and thrown into papillary folds

o Wart like lesions/                                o The folds project both above and below the level of surrounding mucosa

o Papillomatus                                       and crypt like surface grooves exhibit marked, prekeratin plugging

o Fungation may be present                (hyperkeratosis ?) ‑

o The rete projections are broad, bulbous and relatively smooth bordered and there may be chronic inflammatory infiltrate in the subjacent lamina propria. o The deep border of epithelial projections is ‘pushing’ and not infiltrative.

The patient in question is an elderly male (70 years) with a chronic history of tobacco use.

Gross features of a ‘large’, `soft’,’papillary’ lesion that has undergone fungation’ are all consistent with the diagnoses of verrucuous carcinoma. Benign appearing `papillomatoses’ with ‘hyperkaratosis’ further supports the diagnosis. Contiguous structures may be involved as the tumor grows. Tumor of the buccal mucosa can grow to become fixed to the periostium of mandible and with continued growth may eventually destroy the periostium and directly invade the mandible.


Q. 12

Abbe- Estlander Flap is used for:

 A

Lip

 B

Tongue

 C

Eyelid

 D

Ears

Q. 12

Abbe- Estlander Flap is used for:

 A

Lip

 B

Tongue

 C

Eyelid

 D

Ears

Ans. A

Explanation:

Ans. is ‘a’ i.e. Lip

A flap is a skin graft which has its own blood supply. (Normally a skin graft to survive is revascularized by the recipient bed. A flap has its own blood supply.)

Abbey flap is used for Lip reconstruction. It is based on main artery of the orbicularis oris, the labial artery.


Q. 13

The commonest site of oral cancer among Indian population is –

 A

Tongue

 B

Floor of mouth

 C

Alveobuccal complex

 D

Lip

Q. 13

The commonest site of oral cancer among Indian population is –

 A

Tongue

 B

Floor of mouth

 C

Alveobuccal complex

 D

Lip

Ans. C

Explanation:

Ans. is ‘c’ i.e., Alveobuccal complex

  • According to textbook of surgery by ‘Association of surgeons of India’, various cancers of oral cavity are reported with the following frequency:
  • The alveobuccal complex thus accounts for 53.7 percent of oral cancers and thus constitutes the commonest site in the Indian population.

Also Remember

  • Most common site of oral cancer in the world is— Tongue
  • Tobacco is the most imp. risk factor
  • Next is Alcohol

Q. 14

All predisposes to oral cancer except –

 A

Erythroplakia

 B

Leukoplakia

 C

Submucosal fibrosis

 D

Lichen planus

Q. 14

All predisposes to oral cancer except –

 A

Erythroplakia

 B

Leukoplakia

 C

Submucosal fibrosis

 D

Lichen planus

Ans. D

Explanation:

Answer is ‘d’ i.e. Lichen planus 


Q. 15

The commonest pre-malignant condition of oral cancer is –

 A

Leukoplakia

 B

Aphthous ulcer

 C

Lichen planus

 D

Erythro-leukoplakia

Q. 15

The commonest pre-malignant condition of oral cancer is –

 A

Leukoplakia

 B

Aphthous ulcer

 C

Lichen planus

 D

Erythro-leukoplakia

Ans. A

Explanation:

Ans. is ‘a’ i.e., Leukoplakia 

Leukoplakia is the most common (-85%) of the premalignant lesions of the oral cavity.


Q. 16

True statement (s) about oral cancer is/are ‑

 A

Most common in buccal mucosa 

 B

Metastasis uncommon

 C

Respond to Radiotherapy

 D

b and c

Q. 16

True statement (s) about oral cancer is/are ‑

 A

Most common in buccal mucosa 

 B

Metastasis uncommon

 C

Respond to Radiotherapy

 D

b and c

Ans. D

Explanation:

Ans. is ‘b’ i.e. Metastases uncommon; ‘c’ i.e. Responds to Radiotherapy

  • As already mentioned Syphilitic glossitis & chronic irritation by jagged tooth predispose oral cancer.
  • Metastases to distant sites are uncommon
  • Treatment involves both surgery and/or radiotherapy (& chemotherapy for advanced lesions)
  • Buccal mucosa is the most common site of oral cancer in India.
  • Also Remember

Over 95% of cancers of the oral cavity are squamous cell carcinomas.


Q. 17

Predisposing factors for development of oral carcinoma  is

 A

Smoking

 B

Alcohol 

 C

Syphilis

 D

All of the above

Q. 17

Predisposing factors for development of oral carcinoma  is

 A

Smoking

 B

Alcohol 

 C

Syphilis

 D

All of the above

Ans. D

Explanation:

Ans. is ‘d’ i.e., All of the above 


Q. 18

Commonest cancer of the oral cavity is –

 A

Adenocarcinoma

 B

Melanoma

 C

Sarcoma

 D

Squamous cell carcinoma

Q. 18

Commonest cancer of the oral cavity is –

 A

Adenocarcinoma

 B

Melanoma

 C

Sarcoma

 D

Squamous cell carcinoma

Ans. D

Explanation:

Ans. is ‘d’ i.e., Squamous cell carcinoma 


Q. 19

Most common type of oral carcinoma is –

 A

Lip

 B

Cheek

 C

Tongue

 D

Palate 

Q. 19

Most common type of oral carcinoma is –

 A

Lip

 B

Cheek

 C

Tongue

 D

Palate 

Ans. C

Explanation:

Ans. is ‘c’ i.e. Tongue


Q. 20

Trismus in oral cancer patients is severe in those treated with –

 A

Surgery and Radiotherapy

 B

Chemotherapy alone

 C

Surgery alone

 D

Not related to treatment

Q. 20

Trismus in oral cancer patients is severe in those treated with –

 A

Surgery and Radiotherapy

 B

Chemotherapy alone

 C

Surgery alone

 D

Not related to treatment

Ans. A

Explanation:

Ans. is ‘a’ i.e., Surgery and Radiotherapy


Q. 21

Which Ca. has best prognosis –

 A

Ca. Lip

 B

Ca. Cheek

 C

Ca. Tongue

 D

Ca. Palate

Q. 21

Which Ca. has best prognosis –

 A

Ca. Lip

 B

Ca. Cheek

 C

Ca. Tongue

 D

Ca. Palate

Ans. A

Explanation:

Ans is ‘a’ ie Ca lip 

Carcinoma lip

CliZO         ttmi.;,”:

•     Is a locally malignant tumor.

Metastasized to lymph nodes early.

•     Metastases to lymph nodes is late.

•     5 year survival rate is not more than 25′

•     Distant metastasis is rare and very late.

Carcinoma palate

•     Local recurrence rate is low.

Recognized late as it presents as a painless

•     Easily recognized early due to superficial site.

ulcer.

Carcinoma Cheek

Invade the bone of hard palate, floor of the nasal

•     Is a slow growing tumor.

cavity & maxillary antrum.

•     It metastasizes to lymph nodes but distant

Tit involves removal of the underlying bone.

metastasis is rare

If the lesion is larger, partial maxillectomy is

•     Local recurrence is high after resection.

done

 These descriptions of carcinoma clearly rank Ca lip with best prognosis.


Q. 22

In which of the following head and neck cancers, is lymph node metastasis least common: 

 A

Tongue

 B

Buccal mucosa

 C

Hard palate

 D

Lower alveolus

Q. 22

In which of the following head and neck cancers, is lymph node metastasis least common: 

 A

Tongue

 B

Buccal mucosa

 C

Hard palate

 D

Lower alveolus

Ans. C

Explanation:

Ans. is ‘c’ i.e. Hard palate 

Incidence of cervical metastasis in oral cancers (in decreasing order)

  • Tongue (most common)
  • Floor of mouth
  • Lower alveolus
  • Buccal mucosa
  • Upper alveolus
  • Hard palate

Q. 23

Abbey-Estlander Flap is used in the reconstruction of

 A

Buccal mucosa

 B

Lip

 C

Tongue

 D

Palate

Q. 23

Abbey-Estlander Flap is used in the reconstruction of

 A

Buccal mucosa

 B

Lip

 C

Tongue

 D

Palate

Ans. B

Explanation:

Ans. is ‘b’ i.e. Lip


Q. 24

Second primary tumor of head and neck is most commonly seen in malignancy of:

 A

Oral cavity

 B

Larynx

 C

Hypopharynx

 D

Paranasal sinuses

Q. 24

Second primary tumor of head and neck is most commonly seen in malignancy of:

 A

Oral cavity

 B

Larynx

 C

Hypopharynx

 D

Paranasal sinuses

Ans. A

Explanation:

  • Patients with head and neck squamous cell carcinoma (HNSCC) are at increased risk for the development of second primary malignancies compared with the general population.
  • These second primary malignancies typically develop in the aerodigestive tract (lung, head and neck, esophagus).
  • The most frequent second primary malignancy is lung cancer.
  • The highest relative increase in risk is for a second head and neck cancer.
  • The site of the index cancer influences the most likely site of a second primary malignancy.

–    In patients with an index malignancy of the larynx, the second primary tumor was commonly seen in lung, while

–    In patients with an index malignancy of the oral cavity, the second primary tumor was commonly seen in head and neck or esophagus.


Q. 25

Premalignant leison of oral cavity includes:

 A

Erythroplakia

 B

Fordyce spots

 C

Leukoplakia

 D

a and c

Q. 25

Premalignant leison of oral cavity includes:

 A

Erythroplakia

 B

Fordyce spots

 C

Leukoplakia

 D

a and c

Ans. D

Explanation:

Q. 26

The most common premalignant condition of oral carcinoma is:

 A

Leukoplakia

 B

Erythroplakia

 C

Lichen planus

 D

Fibrosis

Q. 26

The most common premalignant condition of oral carcinoma is:

 A

Leukoplakia

 B

Erythroplakia

 C

Lichen planus

 D

Fibrosis

Ans. A

Explanation:

Q. 27

The most common site of oral cancer among Indian population is:

 A

Tongue

 B

Floor of mouth

 C

Alveobuccal complex

 D

Lip

Q. 27

The most common site of oral cancer among Indian population is:

 A

Tongue

 B

Floor of mouth

 C

Alveobuccal complex

 D

Lip

Ans. C

Explanation:

 

Frequency of various cancer of oral cavity in India are :

  • Buccal mucosa 38%
  • Anterior tongue 16%
  • Lower alveolus, floor of mouth 15%

 

 

 


Q. 28

Not included in oral cavity Ca:

 A

Base of tongue

 B

Gingivobuccal sulcus

 C

Soft palate

 D

a and c

Q. 28

Not included in oral cavity Ca:

 A

Base of tongue

 B

Gingivobuccal sulcus

 C

Soft palate

 D

a and c

Ans. D

Explanation:

Q. 29

A 70-year-old male who has been chewing tobacco for the past 50 years presents with  six months history of large, fungating, soft papillary lesions in the oral cavity. The lesion has penetrated into the mandible. Lymph nodes are not palpable. Two biopsies taken from the le­sion proper show benign appearing papillomatosis with hyperkeratosis and acanthosis infiltrating the subjacent tissues. The most likely diagnosis is:

 A

Squamous cell papilloma

 B

Squamous cell carcinoma

 C

Verrucous carcinoma

 D

Malignant mixed tumor

Q. 29

A 70-year-old male who has been chewing tobacco for the past 50 years presents with  six months history of large, fungating, soft papillary lesions in the oral cavity. The lesion has penetrated into the mandible. Lymph nodes are not palpable. Two biopsies taken from the le­sion proper show benign appearing papillomatosis with hyperkeratosis and acanthosis infiltrating the subjacent tissues. The most likely diagnosis is:

 A

Squamous cell papilloma

 B

Squamous cell carcinoma

 C

Verrucous carcinoma

 D

Malignant mixed tumor

Ans. C

Explanation:

 

Although M/C variety of buccal cancer is squamous cell cancer, Verrucous carcinoma is a variety of well-differentiated squamous cell carcinoma which is locally aggressive involving the bone but lymph node metastasis is uncommon. Histologically. these tumors show marked hyperkeratosis and acanthosis with dysplasia limited to deeper layers. Repeated biopsies report it as squamous papilloma. .


Q. 30

Which Ca has best prognosis:

 A

Carcinoma lip

 B

Carcinoma cheek

 C

Carcinoma tongue

 D

Carcinoma palate

Q. 30

Which Ca has best prognosis:

 A

Carcinoma lip

 B

Carcinoma cheek

 C

Carcinoma tongue

 D

Carcinoma palate

Ans. A

Explanation:

 

  • Oral malignancy with best prognosis is carcinoma lips.
  • Oral cancer with worst prognosis is floor of mouth carcinoma.

Q. 31

True statement about oral cancer is/are:

 A

Most common in buccal mucosa

 B

Systemic metastasis uncommon

 C

Responds to radiotherapy

 D

b and c

Q. 31

True statement about oral cancer is/are:

 A

Most common in buccal mucosa

 B

Systemic metastasis uncommon

 C

Responds to radiotherapy

 D

b and c

Ans. D

Explanation:

 

 


Q. 32

The most common site of oral cancer among indian population is:

 A

Tongue

 B

Floor of mouth

 C

Alveolobuccal complex

 D

Lip

Q. 32

The most common site of oral cancer among indian population is:

 A

Tongue

 B

Floor of mouth

 C

Alveolobuccal complex

 D

Lip

Ans. C

Explanation:

Q. 33

Commonest malignancy type in oral cavity is:

September 2010

 A

Adenocarcinoma

 B

Transitional cell carcinoma

 C

Squamous cell carcinoma

 D

Basal cell carcinoma

Q. 33

Commonest malignancy type in oral cavity is:

September 2010

 A

Adenocarcinoma

 B

Transitional cell carcinoma

 C

Squamous cell carcinoma

 D

Basal cell carcinoma

Ans. C

Explanation:

Ans. C: Squamous cell carcinoma


Q. 34

3 cm oral cavity tumor with single ipsilateral 5 cm lymph node with no distant metastases; stage of tumor is ‑

 A

T3N3M0

 B

T2N2aM0

 C

T2N3M0

 D

T2N2bM0

Q. 34

3 cm oral cavity tumor with single ipsilateral 5 cm lymph node with no distant metastases; stage of tumor is ‑

 A

T3N3M0

 B

T2N2aM0

 C

T2N3M0

 D

T2N2bM0

Ans. B

Explanation:

Q. 35

Most common cancer in males in India ‑

 A

Ca rectum

 B

Ca oral cavity

 C

Ca testis

 D

Ca bladder

Q. 35

Most common cancer in males in India ‑

 A

Ca rectum

 B

Ca oral cavity

 C

Ca testis

 D

Ca bladder

Ans. B

Explanation:

Ans. is ‘b’ i.e., Ca oral cavity



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