Search Results for: ulcer

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…re signs of rubbing forcefully and persistently; the fibrosis in a focus beneath the epidermis is secondary to a superficial ulcer produced by scratching animatedly. 10.2.5A: Perivascular dermatitis, spongiotic psoriasiform patchy lichenoid +…

Histologic Diagnosis of Inflammatory Skin Diseases

Scar

…ly localized, but sometimes widespread Configuration of lesions Linear, as in a surgical wound Round, as a consequence of an ulcer induced factitiously Diffuse, as following dermabrasion Punctate, as in “ice-pick” scars of acne vulgaris…

Histologic Diagnosis of Inflammatory Skin Diseases

Nodular vasculitis

…otic adipocytes and collections of neutrophils sometimes are discharged to the skin surface, and, in the process, the lesion ulcerates. Eventually, the ulcer heals as a depressed hyperpigmented scar. To make an unequivocal diagnosis histopathologic…

Histologic Diagnosis of Inflammatory Skin Diseases

Crohn’s disease

…tion of the dermis and the subcutaneous fat Perivascular and sometimes periadnexal infiltrate composed mostly of lymphocytes Ulceration sometimes Late Patchy fibroplasia in lobules in the panniculus in conjunction with granulomatous inflammation…

Histologic Diagnosis of Inflammatory Skin Diseases

Atopic dermatitis

…scratching animated and rubbing energetic. The effects of scratching (excoriations) are epidermal necrosis, erosions and/or ulceration, degenerated collagen and fibrin immediately beneath some ulcers, and, later, fibroplasia in the uppermost part…

Histologic Diagnosis of Inflammatory Skin Diseases

Factitious dermatitis and panniculitis

…tefactual panniculitis. Alpha-1-antitrypsin deficiency panniculitis consists of tender erythematous nodules, plaques, and/or ulcers on the trunk and extremities; although features clinical often are claimed to be related to trauma, it seems that the…