Task: Text Categorization
Input (English): Question: A 65-year-old man with a history of pancreatic cancer undergoing chemotherapy. Emergency consultation for pain and edema of the entire lower limb from the groin. Which diagnostic test is more cost-effective to confirm the diagnostic suspicion? 
 Options:  <0> Dimer D. <1> Magnetic resonance. <2> Phlebography <3> Venous Doppler ultrasound. <4> Helical CT
Output (English): medicine