A 45-year-old man comes to the physician for a 4-month history of increasing soreness in his hands. BMI is 26. Fasting glucose is 130 mg/dL. Physical examination shows darkening of the skin of his forearms. His occupation is a prison worker. An x-ray of the hands is shown.
Which of the following is the most likely explanation for this patient’s findings?
Basic calcium phosphate deposition disease
Calcium pyrophosphate deposition disease
Degenerative joint disease
Monosodium urate crystal deposition
Rheumatoid arthritis
