Palisaded neutrophilic and granulomatous dermatitis

(A) This fully developed lesion exhibits palisades of histiocytes, associated with neutrophils, basophilic debris, mucin, and degenerated collagen.
(B) Neutrophilic dust and intact neutrophils are present in the centers of the palisades, accompanied by degenerated collagen bundles, fibrin, and mucin.