Dual-Energy Computed Tomography Demonstrating Destructive Calcium Pyrophosphate Deposition Disease of the Distal Radioulnar Joint Mimicking Tophaceous Gout

Ian M Ward, Joshua N Scott, Liem T Mansfield, Daniel F Battafarano
Journal of Clinical Rheumatology: Practical Reports on Rheumatic & Musculoskeletal Diseases 2015, 21 (6): 314-7
Calcium pyrophosphate dihydrate deposition (CPPD) disease is a common etiology of crystalline arthropathy; however, it can manifest in multiple patterns such as acute calcium pyrophosphate (CPP) crystal arthritis, osteoarthritis with CPPD, and chronic CPP crystal inflammatory arthritis. Tumoral or tophaceous-like CPPD is a rare manifestation that is occasionally mistaken for gouty tophus or a soft tissue malignancy. Dual-energy computed tomography (DECT) is a new imaging modality currently utilized in assessing monosodium urate crystal deposition; however, its value in CPPD is uncertain. We describe a case using DECT to diagnose tumoral CPPD mimicking tophaceous gout versus recurrence of a previous synovial sarcoma. The imaging findings on DECT prevented unnecessary surgery to assess for possible malignancy, allowing for the prompt diagnosis of tumoral CPPD. Further studies should be performed to determine the role of DECT in assessing for crystalline deposition disease other than gout.

Full Text Links

Find Full Text Links for this Article


You are not logged in. Sign Up or Log In to join the discussion.

Related Papers

Remove bar
Read by QxMD icon Read

Save your favorite articles in one place with a free QxMD account.


Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"

We want to hear from doctors like you!

Take a second to answer a survey question.