Keratoacanthoma associated to cutaneous horn manifestation: case report and difficulty of diagnosis

Authors

  • Marina Curra Departament of Oral Pathology, Dentistry School, Federal University of Rio Grande do Sul
  • Marco Antonio Trevizani Martins Service of Stomatology, Clinical Hospital of Porto Alegre, Federal University of Rio Grande do Sul
  • Laura Campos Hildebrand Departament of Oral Pathology Dentistry School Federal University of Rio Grande do Sul
  • Maria Cristina Munerato Service of Stomatology Clinical Hospital of Porto Alegre, Federal University of Rio Grande do Sul
  • Manoel Sant'Ana Filho Departament of Oral Pathology, Dentistry School, Federal University of Rio Grande do Sul
  • Manoela Domingues Martins Departament of Oral Pathology, Dentistry School, Federal University of Rio Grande do Sul

DOI:

https://doi.org/10.11606/issn.2357-8041.clrd.2015.123074

Keywords:

Neoplasms, Keratoacanthoma, Squamous Cell Carcinoma

Abstract

Background: Cutaneous horn (CH) is a conical hyperkatotic projection of skin with keratotic material. A broad variety of lesions may be found with clinical aspect of cutaneous horn, including malignant tumors.  Case report: We report a case of patient with 77- year-old male, presenting an asymptomatic lesion with clinical aspect of CH in lower lip. The clinical diagnosis hypothesis was squamous cell carcinoma (SCC) and an incisional biopsy was performed. The histopathological analysis revealed a keratoacantoma (KA) and the lesion was completely removed. The one year follow-up revealed no recurrence. Discussion: CH rarely is accompanied by KA. However, KA shows a greater degree of nuclear atypia than SCC making the differentiation of two diseases very difficult. This case highligh the importance of histopathological examination to rule out malignancy.

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Published

2015-12-31

Issue

Vol. 21 No. 4 (2015)

Section

Case report or technical report

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How to Cite

Curra, M., Martins, M. A. T., Hildebrand, L. C., Munerato, M. C., Filho, M. S., & Martins, M. D. (2015). Keratoacanthoma associated to cutaneous horn manifestation: case report and difficulty of diagnosis. Clinical and Laboratorial Research in Dentistry, 21(4), 240-244. https://doi.org/10.11606/issn.2357-8041.clrd.2015.123074