F1Ch14 (Q8672): The lesion is slightly papular. The epidermis is thin with a normal keratin layer. There is mild liquefaction degeneration at the dermal-epidermal interface. Some of the follicles show resting patterns. There is mild perifollicular fibrosis. The papillary dermis is thin; it does not show significant fibrosis. Vessels in the upper portion of the dermis are ectatic. There are mild peri-vascular infiltrates of lymphoid cells. The changes are compatible with rosacea.


Buster (the plight of feral cats)

F2Ch14 (Q8672): To the left of the center of the field, a portion of an atrophic follicle protrudes from the epidermis. There is a small stack of fibrous lamellae at the extremity of this epithelial componene. A second stack is in the fibrous sheath near the bottom of the field. There is mild, concentric perivascular fibrosis in a pattern of loosely spaced, delicate fibrous lamellae.


F3Ch14 (Q8672): Focally, there is a mild hyperplasia of dendritic cells in the epidermis (blue arrows); these dendritic cells are interpreted as Langerhans cells.


F4Ch14 (Q8672): The thin elongated cells in lacunar patterns in the epidermis are interpreted as Langerhans cells. There are a few dyskeratotic cells.


F5Ch14 (Q8672): The reticular dermis shows atrophy of collagen bundles with a loose infiltrate of pale histiocytes. Vessels are ectatic. At the basement membrane level of the epidermis, there is mild liquefaction degeneration at the dermal-epidermal interface.


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