1. WEEKLY RADIOLOGY QUIZ-241
CASE OF THE WEEK
Fifty five year-old female with painful swelling of the joints in both hands, especially worse in interphalangeal joints.
Prize: Back Pack
X-ray
Normal
STUDENTS FROM ALL GRADES AS WELL AS FORMER GRADUATES AND RESIDENTS (EXCEPT RADIOLOGY) MAY REPLY. THE CORRECT ANSWER AND THE WINNER WILL BE ANNOUNCED NEXT WEEK.
SEND YOUR ANSWER TO NO LATER THAN June 6th, 2016, 09:00 a.m.

2. WEEKLY RADIOLOGY QUIZ-241
LAST WEEK’S CASE
Fifty five year-old female with painful swelling of the joints in both hands, especially worse in interphalangeal joints.
Answer: Erosive Osteoarthritis
Winner: (Y6)
Correct answers: 7
Prize: Back Pack
“gull wing” sign
CMC arthritis
X-ray
Normal
Erosive OA differs from the more common degenerative arthritis by strong (postmenopausal) female predilection (12:1) and involvement of proximal and distal interphalangeal joints with erosive changes, resulting in the typical “seagull wing” appearance. Clinically simulates psoriatic or rheumatoid arthritis. Rheumatoid factor is negative, and the involvement of the first carpometacarpal (CMC) joint leads to the diagnosis.