Radiologic case study. Rheumatoid arthritis with rice bodies

Candida septic arthritis with rice body formation: a case report and review of literature

Rice body formation in a joint or bursa is a rare condition, and is usually associated with rheumatoid arthritis or tuberculous arthritis. Here we describe a case of multiple rice body formation in a shoulder joint and in adjacent bursae, which was confirmed to be due to septic arthritis by Candida species. To the best of our knowledge, rice body formation in Candida septic arthritis in an immune-competent patient has not been previously reported.

Bilateral recurrent wrist flexor tenosynovitis and rice body formation in a patient with sero-negative rheumatoid arthritis: A case report and review of literature

INTRODUCTION

Rice body formation has been traditionally observed in the joint and tendon sheaths of patients with tuberculosis. Few case reports exist that describe rice body formation in patients with rheumatoid arthritis. We describe a case report of bilateral recurrent wrist flexor tenosynovitis with rice body formation in a patient with sero-negative rheumatoid arthritis.

PRESENTATION OF CASE

This case report describes a 72 year old lady presenting with severe bilateral, flexor tenosynovitis of the wrists. Ultrasonography revealed significant echogenic fluid on the palmer aspect of wrist joint surrounding flexor tendons with intact neurovascular bundles and no bony erosion. Laboratory tests demonstrated elevated erythrocyte sedimentation rate (50 mm/h) and negative rheumatoid factor. A sequential subtotal flexor tenosynovectomy was carried out with decompression of the carpal tunnel. During the operation, multiple rice bodies among the flexor tendons with adherent synovitis were found. Histology revealed disrupted synovial tissue containing several areas of fibrinoid necrosis, bounded by a layer of vaguely pallisaded histiocytes but no epitheloid granulomata or germinal centre. A revision surgery with debulking of the fibro-osseous canal was undertaken following recurrence. The patient presently has complete resolution of symptoms at one year follow-up.

DISCUSSION

The combined clinical, laboratory, ultrasound and histology findings of the patient indicated that the cause of the rice body formation was due to a sero-negative arthritis rather than tuberculosis.

CONCLUSION

Rice body formation can be caused by sero-negative arthritis. Bilateral wrist flexor tensosynovitis can recur within five months of a previous synovectomy in a patient with sero-negative arthritis.

Rice-body formation and tenosynovitis of the wrist: a case report

A 61-year-old woman presented with mild pain and swelling on the volar aspect of the wrist, hand, and little finger. Radiography showed a soft-tissue mass shadow, and magnetic resonance imaging showed acute tenosynovitis of the flexor tendons and an inflammatory mass inside the carpal tunnel. Laboratory test results were normal, except for an elevated erythrocyte sedimentation rate (40 mm/h). The patient had an ambiguous Mantoux test result but no history of mycobacterial exposure. Exhaustive investigations for rheumatic disease were negative. Surgical exploration of the lesion revealed rice bodies in the common flexor tendon synovial sheath, extending distally to the tip of the fifth finger. Removal of the rice bodies and thorough excision of the sheath was performed. The patient regained a full and painless range of motion in about 3 months. One-year follow-up revealed no underlying disorder.