47 - oral cavity surgery mcqs - part 4

31q: commonest site of carcinoma tongue is ?

 

1. dorsum
2. ventral aspects
3. anterior 2/3 rd lateral aspect
4. tip

 

answer: c . anterior 2/3 or middle 1/3 rd .

 

32q: in the reconstruction following excision or previously irradiated cheek , the flap will be ?

 

1. local tongue
2. cervical
3. forehead
4. pectoralis major myocutaneous

 

answer: d . pectoralis major myocutaneous .

 

33q: true statements about oral cancer is / are ?

 

1. most common in buccal mucosa
2. metastasis is uncommon
3. respond to radiotherapy
4. surgery done
5. syphilis and dental irritation predisposes

 

answer: b, c , d , e . cancer involving the buccal mucosa is the most common type of oral cancer in India but the most common type of oral cancer in the world is lip cancer .

 

34q: commonest site of carcinoma tongue ?

 

1. apical
2. lateral borders
3. dorsum
4. posterior one third
5. faucio lingual

 

answer: b . lateral borders .

 

35q: which is not true of carcinoma tongue ?

 

1. lateral border involved
2. cervical lymph node involvement
3. commonly adenocarcinoma
4. tobacco chewing is a risk factor

 

answer: c . carcinoma of tongue is most commonly squamous cell carcinoma and not adenocarcinoma .

 

the most common sites of squamous cell carcinoma are :

 

1. skin
2. head and neck tumor
3. carcinoma oesophagus
4. carcinoma cervix
5. carcinoma bladder

 

36q: trismus in oral cancer patients is severe in those treated with ?

 

1. surgery and radiotherapy
2. chemotherapy alone
3. surgery alone
4. not related to treatment

 

answer: a . surgery and radiotherapy .

 

37q: which of the following statements are true about carcinoma tongue ?

 

1. occurs most commonly on the lateral border of the middle third of the tongue
2. metastasize readily to cervical lymph nodes
3. is usually radiosensitive
4. treated surgically – should include homolateral neck dissection except for small lesions
5. all of the above

 

answer: e . all the above statements are true .

 

38q: a patient with carcinoma tongue is found to have lymph nodes in the lower neck. The treatment of choice for the lymph nodes is ?

 

1. lower cervical neck dissection
2. suprahyoid neck dissection
3. teleradiotherapy
4. radical neck dissection

 

answer: d . radical neck dissection .

 

39q: an old man who is edentulous developed squamous cell carcinoma in buccal mucosa that has infiltrated to the alveolus . following is not indicated in the treatment ?

 

1. radiotherapy
2. segmental mandibulectomy
3. marginal mandibulectomy involving removal of the outer table only
4. marginal mandibulectomy involving removal of upper half of mandible

 

answer: c . in marginal mandibulectomy inner table of the mandible is removed and not the outer table . whenever squamous cell carcinoma of the oral cavity involve the mandible mandibulectomy becomes necessary.

                                          Mandibulectomy is of two types . segmental mandibulectomy and marginal mandibulectomy . marginal mandibulectomy is done when the tumor lies within one centimeter of the mandible or abuts the periosteum without evidence of direct bony invasion . if the tumor is greater than one centimeter and has direct bony invasion , then segmental mandibulectomy is done .

 

40q: a 80 year old patient presents with a midline tumor of the lower jaw , involving the alveolar margin . he is edentulous . what is the treatment of choice ?

 

1. hemimandibulectomy
2. commando operation
3. segmental mandibulectomy
4. marginal mandibulectomy

 

answer: c . segmental mandibulectomy . hemimandibulectomy cannot be done because it is a midline tumor .