Pigmented squamous cell carcinoma: case report and importance of differential diagnosis

AUTOR(ES)

Morais, Patrícia Motta de, Schettini, Antônio Pedro Mendes, Rocha, Jeanine Alvarenga, Silva Júnior, Renato Cândido da

FONTE

An. Bras. Dermatol.

DATA DE PUBLICAÇÃO

2018-02

RESUMO

Abstract: A few cases of pigmented squamous cell carcinoma affecting the skin and the ocular and oral mucosa of the elderly have been described in the literature. The disease manifests itself as papular and nodular erythematous or pigmented lesions. The main clinical differential diagnoses are pigmented basal cell carcinoma and melanoma. Histopathological examination is characterized by proliferation of atypical squamous cells with formation of horn pearls permeated by dendritic melanocytes. For this reason, a careful diagnosis is necessary to rule out other tumors that show melanin pigment. Surgical removal is the indicated treatment and the prognosis is similar to the classical squamous cell carcinoma. We report a case of pigmented squamous cell carcinoma with diagnosis confirmed by histological and immunohistochemical examinations.

Documentos Relacionados

• Adenoid cystic carcinoma: immunohistochemistry and differential diagnosis, a case report
• Jorge Lobo’s disease with malignant degeneration to squamous cell carcinoma: case report
• Penile squamous cell carcinoma: a review of the literature and case report treated with Mohs micrographic surgery
• The prognostic importance of parotid involvement by head and neck squamous cell carcinoma - Case report
• Case Report: Primary Squamous Cell Carcinoma of a Tarsal Bone