This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Oesophagus, Subject name: Surgery
Best test for oesophageal varices is 
Select and explain. 
A. CT- scan, B. Gastro- oesophagoscopy, C. Tomography, D. Ultrasound
B: Gastro- oesophagoscopy
Answer: B: Gastro- oesophagoscopy 
Explanation: B. i.e. (Gastro - oesophagoscopy) (1089 - B &L) (897 - S. Das 5th)Endoscopy - upper GI endoscopy represents the most reliable single technique as it shows the oesophageal varix and bleeding point* Dilated longitudinal veins running a Zig- Zag course*** Diffuse esophageal spasm is best diagnosed by Manometry**Management of bleeding oesophageal varices* Blood transfusion* Correct coagulopathy* Oesopageal balloon tamponade (Sengstaken - Blakemore tube)*** Drug therapy (Vasopressin /Octreotide)* Endoscopic sclerotherapy or banding* Assess portal vein potency (Doppler USG or CT)* Transjugular intrahepatic portosystemic stent shunts (TIPSS) (Contraindicated in portal vein occlusion)* Surgery- Portosystemic shunts- Oesophageal transaction- Splenectomy and gastric devascularisation* Commonest cause of acute upper GI haemorrhage - Peptic ulcer**