One of about fifty papules on the face near the eyes of an adult:

Microcysts (arrowheads) are found superficially in this lesion which has dense stroma (cf. the normal dermis in the right side of the picture). Some of the microcysts contain keratin.

A keratin-filled microcyst is attached by a thin strand of epithelium to a ductal structure having amorphous, granular material in the lumen.

Lumina that are almost empty. Note the dense collagenous stroma.

Intracytoplasmic lumen formation within epithelium.

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