Nail Squamous Cell Papilloma: A Rare Case Report

Abstract

<b><i>Introduction:</i></b> Squamous cell papilloma is a benign tumor whose pathogenesis is generally related to the human papillomavirus. Despite affecting several organs, we did not find cases reported in the nails. <b><i>Case Presentation:</i></b> A 67-year-old female presented with a painful lesion in the nail of the right hallux that started in 2021, with an erythematous appearance evolving to black and expansive growth. Due to the evolution and symptoms, she opted for excision, with a histopathological report of squamous cell papilloma. Complementary treatment with imiquimod was performed, with good healing and pain control. <b><i>Discussion:</i></b> Due to the lack of previous reports, treatment was based on therapeutic options for papillomas located in other regions. Excision was performed, followed by application of imiquimod with good response. The prognosis is favorable; however, further studies are needed to elucidate the diagnosis and management of nail squamous cell papilloma.