Free Surgical MCQs- Esophagus

Q 8.Most valuable investigation for preoperative evaluation of extensive corrosive stricture is

a) Endoscopic ultrasound

b) Barium study

c) CT Thorax

d) Pharyngoscopy

Q9. Which is the shortest route for esophageal replacement organ after esophagectomy?

a) Retrosternal

b) Posterior mediastinum

c) Anterior mediastinum

d) Skin

Q10. Which microscopic structure is absent in the wall of esophagus

a) Mucosa

b) Submucosa

c) Muscularis

d) Serosa

Answers

6. a

Chemotherapy is most often used preoperatively alone or in combination with radiation therapy to treat micrometastases and reduce the tumor size to improve resectability. Cisplatin and 5-fluorouracil the most frequently used agents. Other agents with activity in esophageal cancer include paclitaxel, camptothecin, irinotecan, and vinorelbine. Combination therapy has with response rates between 50% and 70%.

What are the benefits of neoadjuvant chemotherapy

7. c

The colon is used if the patient has undergone a partial or total gastrectomy previously or if tumor involves the stomach to preclude a 5-cm margin. The major draw back of using a colon conduit is the need to establish three anastomoses with their complications.

Right sided conduits are based on middle colic artery and have the drawbacks of being short pedicled, thin walled and bulky.

8.a

9. b

Posterior mediastinum route is the shortest and preferred route for esophageal replacement. Stomach, Colon and jejunum are the most commonly used organs to restore continuity after esophgeal resection

From coeliac axis to cricoid cartilage the shortest distance is Posterior mediastinal route- 30cm , Retrosternal 32 cm and skin 34 cm.

10.d

Esophagus is deprived of two structures seen in the other parts of intestine

Serosa

Mesentary

Esophagus(Oesophagus)- Surgery Questions