'Rice Body' Containing Cystic Tumor Occurred at the Volar Aspect of the Finger

Park, Hyun Chul; Kim, Hyun Woo; Lee, Chang Woo

Abstract

'Rice body' is a soft tissue nodule resembling shiny white rice-bean, which is occasionally observed at the juxta-articular area among patients with rheumatic arthritis and tuberculosis arthritis. A 45-year-old man was presented with tender cystic tumor on the volar aspect of the left third finger, which was noted 5 months prior to the visit. When performing a biopsy, numerous, whitish granular, 5~10 mm in size, and ovoid substances were observed, and found to be the major component of the cystic tumor. Histologically, the granules were consistent with the so-called 'rice bodies' (granules of inner acidophilic material surrounded by fibrin/collagen). With these findings, we report a case of rice body-containing cystic tumor clinically reminiscent of other cystic lesions, which can be seen on the finger around the joint structure.