Molluscum contagiosum occurring in an epidermal cyst on the eyelid. Light and electron-microscopic studies with literature review.

We hereby report light and electron-microscopic (EM) studies on an unusual case of molluscum contagiosum occurring in an epidermal cyst. It was considered that the pre-existing cyst was inoculated with molluscum contagiosum viruses, which were confirmed electron-microscopically. We also would like to re-emphasize the usefulness of formalin fixed tissue for EM confirmation of viruses.