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A 3-month-old with a blistering plaque

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Unknown: A 3-month-old with a blistering plaque
Ali Alsharqi MBChB MD MRCP, Richard Parslew MBChB MRCP MD, Rajeev Shukla MD FRCPath
Dermatology Online Journal 16 (9): 10

The Royal Liverpool and Broadgreen University Hospitals NHS Trust

Figure 1 Figure 2

A 3-month-old infant presents to the pediatric dermatology clinic with a solitary lesion on the left lower leg. At birth the parents noticed a slightly erythematous area. There was no significant past medical history; milestones were normal.

Intermittently this area will form a superficial blister that will cover the majority of the surface area of the lesion; the blister will rapidly rupture to form a scab. At a one point she was diagnosed with a superficial bacterial infection after culturing Moraxella spp. from the area.

The blistering did respond to topical antibiotics, but a well-demarcated 1 cm x 2 cm erythematous plaque remains (Figures 1 and 2).

A diagnostic biopsy is shown in Figure 3. A stain for CD117 is shown in Figure 4.

Figure 3 Figure 4


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