Multiple and giant Becker’s nevus - Case report

Celina Couto, Pediatrics Department, Hospital de Santarém, Santarém, Portugal
Filipa Sutre, Pediatrics Department, Hospital de Santarém, Santarém, Portugal
José Onofre, Pediatrics Department, Hospital de Santarém, Santarém, Portugal
Maria João Silva, Dermatology Department. Hospital de Santarém, Santarém, Portugal
Aldina Lopes, Dermatology Department. Hospital de Santarém, Santarém, Portugal

Introduction: Becker’s nevus is a rare condition presenting benign skin lesions characterized by skin hyperpigmentation. Case report: We present an atypical case of a 17-year-old male adolescent with lumbosacral scoliosis, right breast hypoplasia, and three large hyperpigmented macules, with irregular extension between the bilateral scapular region and the knees bilaterally, with associated hypertrichosis. The histological analysis confirmed the diagnosis of Becker’s nevus, and a watchful waiting approach was adopted. The association of Becker’s nevus, unilateral breast hypoplasia, and scoliosis falls within the spectrum of Becker’s nevus syndrome. Discussion: Given the atypical nature of this presentation, this case report holds significant relevance.

Keywords: Case report. Adolescent. Hyperpigmentation. Hypertrichosis. Nevus.