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Dec 2012

Violaceous and Ulcerated Plaque Following a Cesarean Section—Quiz Case

Author Affiliations
 

SECTION EDITOR: MARY S. STONE, MD; ASSISTANT SECTION EDITORS: SOON BAHRAMI, MD; CARRIE ANN R. CUSACK, MD; MOLLY A. HINSHAW, MD; ARNI K. KRISTJANSSON, MD; LORI D. PROK, MD

Arch Dermatol. 2012;148(12):1411-1411. doi:10.1001/archdermatol.2012.2964a

A 27-year-old woman with a painful, reddish-blue (livedoid) skin area showing small ulcerations on the lower abdomen (Figure 1) was examined. The lesion appeared a few centimeters above the inconspicuous, vertically oriented scar 4 weeks after a cesarean section. A regimen of systemic antibiotics had not been successful. Her medical records revealed a problem with excess weight (body mass index >40 [calculated as weight in kilograms divided by height in meters squared]) and a smoking habit. Laboratory test findings were unrevealing, except for increased antinuclear antibody level (1:160) and a slightly elevated parathyroid hormone level (calcium, phosphate, and vitamin D were within normal levels), which both returned to normal within 6 months. Prothrombotic factors (cryoglobulins and anticardiolipin antibodies) were negative. A biopsy was obtained from a central, nonulcerated region and analyzed with hematoxylin-eosin and CD31 staining (Figure 2 and Figure 3).

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