PMC4748789_01
Severe urticaria leading to excoriations presenting as a paraneoplastic manifestation of breast cancer in a 49-year-old woman.
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F1
One year after initiation of tamoxifen and 11 months after a normal screening right mammogram, the patient presented again with severe unilateral arm urticaria and associated excoriations, on the contralateral, right, side (fig. 1).