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Scanning electron microscopy of molluscum contagiosum*

Microscopia eletrônica de varredura do molusco contagioso

Hiram Larangeira de Almeida Jr Martha Oliveira Abuchaim Maiko Abel Schneide Leandra Marques Luis Antônio Suíta de Castro About the authors

Molluscum contagiosum is a disease caused by a poxvirus. It is more prevalent in children up to 5 years of age. There is a second peak of incidence in young adults. In order to examine its ultrastructure, three lesions were curetted without disruption, cut transversely with a scalpel, and routinely processed for scanning electron microscopy (SEM). The oval structure of molluscum contagiosum could be easily identified. In its core, there was a central umbilication and just below this depression, there was a keratinized tunnel. Under higher magnification, a proliferation similar to the epidermis was seen. Moreover, there were areas of cells disposed like a mosaic. Under higher magnification, rounded structures measuring 0.4 micron could be observed at the end of the keratinized tunnel and on the surface of the lesion.

Microscopy, electron, scanning; Molluscum contagiosum; Molluscum contagiosum virus

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