Fig. 11.1 Sweet syndrome. A,B, Courtesy, Yale Dermatology Residents’ Slide Collection. Histopathology: Dense dermal infiltrate of neutrophils, sometimes with papillary dermal edema (Fig. 11.1C) Pyoderma Gangrenosum (Fig. 11.2) Any site, but commonly…

Fig. 6.1 Distribution patterns of atopic dermatitis in infancy. Courtesy, Julie V Schaffer, MD. From Bolognia JL, Schaffer JV, Duncan KO, Ko CJ. Dermatology Essentials, 1e. Philadelphia: Saunders, 2014, with permission. Fig….

Fig. 10.1 Lichen nitidus. A, Courtesy, Yale Dermatology Residents’ Slide Collection. Histopathology: Epidermal rete demarcating a lymphohistiocytic infiltrate in the superficial dermis Histiocytoses There are classic presentations of different histiocytoses (Fig. 10.2,…

Fig. 14.1 Microscopy of selected localized blistering conditions. *Can also be subepidermal.  Disorders With a Characteristic Morphology Bullous impetigo (Fig. 14.2) – somewhat tense vesicles/bullae or superficial erosions with collarettes of scale…

Fig. 23.1 Most common locations for several forms of panniculitis. Adapted from Bolognia JL, Jorizzo JL, Schaffer JV. Dermatology, 3e. London: Saunders, 2012, with permission. Fig. 23.2 Common forms of panniculitis. A,B Erythema nodosum….

Fig. 18.1 Purpura. A,B Actinic (solar) purpura. The lesion is flat and solid with a smooth outline. C,D Palpable purpura (raised with a smooth outline). E,F Retiform purpura. The lesions are a…