Giant cutaneous horn on the lower lip

• Author(s): Pinto-Almeida, T. ; Oliveira, A. ; Velho, G. ; Alves, R. ; Caetano, M. ; Selores, M.
• Date: 2011
• Persistent ID: http://hdl.handle.net/10400.16/1662
• Origin: Repositório Científico do Centro Hospitalar do Porto
• Document Type: Article
• Language: English

Description

Cutaneous horn is a conical hyperkeratotic projection of the skin composed of compact keratin. A wide range of pathologic conditions may be found at its base, including a significant proportion of malignant tumors. A notable, giant cutaneous horn uncovering a keratoacanthoma/well-differentiated squamous cell carcinoma is presented, highlighting the importance of histopathological examination to rule out malignancy because clinical features cannot assure a correct diagnosis.