Primary Cutaneous Spindle Cell Squamous Carcinoma Expressing Smooth Muscle Actin: Diagnostic Pitfalls.
Am J Dermatopathol
; 40(6): 449-451, 2018 Jun.
Article
em En
| MEDLINE
| ID: mdl-29329129
ABSTRACT
Alpha smooth muscle actin (SMA) belongs to the actin proteins. It is a known immunohistochemical marker for tumors of mesenchymal origin. There have been reports of expression of SMA in certain epithelial malignancies in the head and neck and genital regions. In this study, the authors report a primary cutaneous spindle cell squamous carcinoma expressing SMA. Both high- and low-molecular-weight keratins and p63 were positive, and S100 protein, SOX10, MART-1/Melan-A, and muscle-specific actin stains were negative. This case highlights that an epithelial tumor could express a mesenchymal marker, thereby making the diagnosis problematic.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Neoplasias Cutâneas
/
Carcinoma de Células Escamosas
/
Actinas
Tipo de estudo:
Diagnostic_studies
Limite:
Female
/
Humans
/
Middle aged
Idioma:
En
Revista:
Am J Dermatopathol
Ano de publicação:
2018
Tipo de documento:
Article
País de afiliação:
Marrocos