This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Orthopaedics
Which of the following is not seen in pseudogout - 
Select and explain. 
A. Small joints affected, B. Large joints affected, C. Chondrocalcinosis, D. Deposition of calcium pyrophosphate
A: Small joints affected
Answer: A: Small joints affected 
Explanation: It is one of the forms of "calcium pyrophosphate dihydrate" (CPPD) arthropathy.
Pseudogout commonly involves the larger joints.Knee joint is most commonly involved; other sites are wrist, elbow, shoulder, ankle. Involvement of small joints is uncommon.
The radiologic hallmark of CPPD is "chondrocalcinosis". Chondrocalcinosis is seen as punctate and/or linear radiodense deposits in fibrocartilaginous joint menisci or articular hyaline cartilage.