“…Pseudogout is one of the most common forms of crystal-associated arthritis associated with CPPD deposition in the joints and periarticular tissues (1)(2)(3). The prevalence of CPPD deposition is extremely high and it is reported that knee chondrocalcinosis, which is assumed to be due to CPPD deposition, is found in 9.6% of individuals older than 50 years old, and this incidence increases with age (4,5). Attacks of pseudogout can be either monoarticular or oligoarticular, and the most commonly affected joints are the knees, followed by the shoulders, wrists, and ankles (2).…”