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JAMA Clinical Challenge
Clinician's Corner
April 17, 2013

Edematous Erythema, Subcutaneous Plaques, and Severe Pain in the Lower Extremities in an Immunocompromised Patient

Author Affiliations
 

JAMA Clinical Challenge Section Editor: Huan J. Chang, MD, Contributing Editor. We encourage authors to submit papers for consideration as a JAMA Clinical Challenge. Please contact Dr Chang at tina.chang@jamanetwork.org

Author Affiliations: Department of Dermatology, First Affiliated Hospital, Zhejiang University, Hangzhou, Zhejiang, China.

JAMA. 2013;309(15):1632-1633. doi:10.1001/jama.2013.3740

A 57-year-old woman who received a renal transplant 10 years agois admitted for evaluation of edematous erythema, subcutaneous plaques, and severe lower extremity pain for 1 month. She has had a fever (39.2°C) for 10 days but denies headaches, nausea, and vomiting. Her lesions and fever have not responded to 3 separate courses of intravenous antibiotics (penicillin, ceftriaxone, imipenem). She denies any preceding injury or insect bite. Skin examination reveals diffuse tender edematous erythema and multiple ill-defined, indurated subcutaneous plaques on most of the lower extremities, without abscess or ulceration (Figure 1). Neurologic examination results are normal. Her medications include mycophenolate mofetil (1.75 g/d), cyclosporine (120 mg/d), and prednisone (15 mg/d). White blood cell count is normal, with 90% neutrophils; C-reactive protein level is elevated at 31.3 mg/L (298.1 nmol/L). IgG level is 677 mg/dL. Two repeat blood cultures are negative. Ultrasound and magnetic resonance imaging of lower extremities show no sign of abscess.

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