Histologic Diagnosis of Inflammatory Skin Diseases

Nodular vasculitis

…ischarged 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 of nodular vasculitis, it is requisite that both arteritis and…

Histologic Diagnosis of Inflammatory Skin Diseases

Crohn’s disease

Crohn’s disease Synonyms Inflammatory bowel disease Regional ileitis Regional enteritis Chronic cicatrizing enteritis Presentation stereotypical Age and sex Young adults; slight predominance of women Distribution of lesions The poles of the ga…

Histologic Diagnosis of Inflammatory Skin Diseases

Atopic dermatitis

…atching (excoriations) are epidermal necrosis, erosions and/or ulceration, degenerated collagen and fibrin immediately beneath some ulcers, and, later, fibroplasia in the uppermost part of the dermis and crusts above erosions and ulcerations; the eff…

Histologic Diagnosis of Inflammatory Skin Diseases

Factitious dermatitis and panniculitis

Factitious dermatitis and panniculitis Synonyms Self-induced skin disease Pathomimicry Dermatitis artifacta Munchhausen syndrome Dermatitis passivata Factitial lymphedema (Secretan syndrome) Malingering Self-mutilation Presentation stereotypical Age…

Differential Diagnosis in Dermatopathology

Differential Diagnosis

Pyogenic granuloma, fully developed Kaposi’s sarcoma, nodular 1. Exophytic predominantly 1. Endophytic predominantly 2. Collarette of infundibular and eccrine ductal epithelium invariable 2. Collarette of episodic epithelium 3. Granula…