RESUMO
A 20-year-old male presented with a 4 year history of a solitary nodule, 8 mm in diameter on the left temple. It was covered by normal skin, with a central depression and elevated borders. Histopathology showed numerous horn cysts amidst nests and strands of basaloid cells surrounded by a dense fibrous stroma. The clinical and histopathological features were characteristic of desmoplastic trichoepithelioma.
Assuntos
Neoplasias Faciais/patologia , Neoplasias de Anexos e de Apêndices Cutâneos/patologia , Neoplasia de Células Basais/patologia , Adulto , Diagnóstico Diferencial , Humanos , Masculino , Neoplasias Cutâneas/patologiaRESUMO
The members of the Reoviridae family are extremely varied in host ranges and have such diverse natural histories that it is compelling to conclude that their structural asset and replication strategy are uniquely successful in evolutionary terms. It follows that their study addresses fundamental aspects of virology, besides the ones which are customary with important pathogens affecting humans, animals and plants. We deal here with the present taxonomy of the family Reoviridae and of its genera, two of which (Orbivirus and Rotavirus) are treated separately in this issue. Along with a cursory presentation of the remaining genera, we give a concise update of recent findings on the genus Orthoreovirus.
