Pemphigus vulgaris – low magnification

Massive suprabasal acantholysis
Dermal papillae are preserved, with rupture of the bridges between keratinocytes in the basal layer, resembling intestinal villi or rows of tombstones
Very subtle dyskeratosis may be present
Mixed inflammatory infiltrate
Pemphigus vulgaris – suprabasal acantholysis


LEGEND
Dermal papillae are preserved, with rupture of the bridges between keratinocytes in the basal layer, resembling intestinal villi or rows of tombstones
However, the basal keratinocytes remain attached to the basement membrane
Pemphigus vulgaris – inflammatory infiltrate


LEGEND
Eosinophils
Neutrophils
Lymphocytes

