A patient presented with a parotid swelling, which initially was suspected to be malignant because of the following findings: radiodensity, progression into the joint, osseous destruction of the major ala of the sphenoid and a fine needle aspirate with [cambridge.org]

Acute temporomandibular arthritis in a patient with bruxism and calcium pyrophosphate deposition disease. Arthritis Rheum 1982 ; 25 : 353 –355 Zemplenyi J, Caltcaterra TC. Chondrocalcinosis of the temporomandibular joint: a parotid pseudotumor. [ajnr.org]

Splint therapy during sleep was very effective in reducing jaw pain on movement. Because synovial chondromatosis of the left TMJ wassuspected, total extirpation of the calcified masses was performed via a preauricular approach. [ci.nii.ac.jp]

In addition, induction of transient arthralgias in some patients is a well-recognized adverse effect of MTX [18], which could have further obscured a potential beneficial effect. [arthritis-research.biomedcentral.com]

The most frequently reported adverse effects are diarrhea, back pain, headaches, and arthralgias. Also, patients should be monitored for thromboembolic events and increased hepatic transaminases. [clevelandclinicmeded.com]

Ectopic calcifications in 70 individuals from 12 families * Family 1 1/F ASY 42 – – 2/F 32 42 Osteopoikilosis, nephrolithiasis – 3/M 40 74 Osteopoikilosis – 4/M ASY 46 Osteopoikilosis, nephrolithiasis – Family 2 1/M 42 64 Nephrolithiasis 2/M 41 53 Nephrolithiasis [onlinelibrary.wiley.com]

Hyperuricemia can cause uric acid nephrolithiasis and, possibly, nephropathy, if uric acid accumulates in the renal interstitium and tubules. [clevelandclinicmeded.com]