AKT-5334

AKT-5334

A 52-year-old man visits his General Practitioner with complaints of pins and needles in his feet, along with back pain, three weeks after experiencing gastroenteritis. He has also noticed a gradual increase in weakness in his legs over the past three days. During the examination, the doctor observes absent ankle tendon and patellar tendon reflexes, while bicep tendon reflexes are normal. The plantar response flexor is reduced, but sensation in his feet is normal. What is the most probable diagnosis?