F5Ch30 (G5188): In this field, squamous eddies are a prominent feature. Many of the eddies show central collections of acidophilic, keratinized debris. The compact debris is not a characteristic of infundibular or sebaceous differentiation. If the patterns of the inconstant portion of a regressing follicle are selected as a reference model, there are similarities.
Focally, dendritic cells, compatible with melanocytes, are sprinkled among keratinocytes (in the background population, rather than among the cells forming the whorls). A few small clefts have formed at the interface between some of the whorls and the background population. The background population seems to bear the brunt of the cell damage in areas in which lysis and degeneration of cells become prominent features.