Weekly Case

Title : Case 557

Age / Sex : 55 / M

Chief complaint :

Slowly progressive sensory loss and weakness of both feet

What is your impression?
Two weeks later, you can see the final diagonosis with a brief discussion of this case (Please submit only one answer).

Courtesy of Sang-Hee Choi, Sungkyunkwan University, Samsung Medical Center

To submit your answer, login first (for Korean radiologists) or send e-mail to balgundol@gmail.com (for non-Korean radiologists)