Course: Segmental Skin Induration in a Boy
CME Credits: 1.00
Released: 2024-01-10
An 11-year-old boy presented to our department with progressive unilateral skin hardening on his right thigh and buttock for 7 years. Recently, the motion of his right limb joint was slightly limited. He was born to healthy parents and did not have any medical disease. On physical examination, there was an ill-defined, stony-hard plaque involving his right thigh above the patella extending to his right buttocks with loss of skin elasticity. The affected skin was associated with mild hypertrichosis and hyperpigmentation (Figure 1A). Laboratory tests revealed normal results for routine blood tests, autoantibodies, immunoglobulins, C-reactive protein, and erythrocyte sedimentation rate. Magnetic resonance imaging of the right thigh demonstrated slight thickening of subcutaneous tissue and T2 signal abnormality (Figure 1B). A skin biopsy was taken from the affected thigh for histopathological examination and alcian blue staining.
Educational Objective
Based on this clinical scenario and the accompanying image, understand how to arrive at a correct diagnosis.
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