A 15-year-old boy presents with a unilateral, irregularly bordered, tan-brown patch on the right chest and shoulder with increased terminal hair growth, consistent with Becker’s nevus as seen in the clinical image. Which of the following extracutaneous findings is most likely to be associated with Becker’s nevus syndrome?

A. Ipsilateral breast hypoplasia

B. Hyperhidrosis

C. Increased risk of malignancy

D. Poliosis

E. Darier sign

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