Differential Diagnosis in Dermatopathology

Discussions

…in clusters, as they do in dermatitis herpetiformis and herpes gestationis, neither of which has been shown to be viral in cause. When herpes simplex or zoster/varicella occurs in patients with other skin diseases such as atopic dermatitis and Darie…

Differential Diagnosis in Dermatopathology

Herpes simplex vs. Vaccinia

A hamartoma of epidermis, epithelial structures of adnexa, and presumably dermal elements, typified, when fully formed, by a papillated or verrucous yellowish plaque situated usually on the scalp. The condition may present itself as a solitary lesio…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

Images 10.86.1A: Perivascular dermatitis, lymphocytic + 10.86.1B: Thin cornoid lamella = Porokeratosis, disseminated superficial actinic ┬áThe cornoid lamella on the left springs from an infundibulum. Cornoid lamellae also may emanate from…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Blue Nevus?

…l and inappropriate method of removal, and in those blue nevi situated near or on the nose, which are not blue but grayish brown, one may be tempted to try it.” Arnold HL, Odom RB, James WD. Melanocytic nevi and neoplasms. In: Andrew’s D…

Differential Diagnosis in Dermatopathology

Discussions

…ions of juvenile xanthogranuloma is nodular urticaria pigmentosa. Clinically, the two may be nearly indistinguishable from one another, but the lesions made up of mast cells urticate when they are rubbed, a phenomenon known as Dariers sign. A…

Differential Diagnosis in Dermatopathology

Xanthogranuloma vs. Reticulohistiocytic granuloma

A hamartoma of epidermis, epithelial structures of adnexa, and presumably dermal elements, typified, when fully formed, by a papillated or verrucous yellowish plaque situated usually on the scalp. The condition may present itself as a solitary lesio…

Histologic Diagnosis of Inflammatory Skin Diseases

Irritant contact dermatitis/Phototoxic dermatitis

…comes into being beneath the necrotic one by virtue of new basal cells supplied by infundibular epidermal and eccrine ductal keratocytes. Bibliography Bibliography for irritant contact dermatitis Darier J. Artificial dermatitides. In: Politzer S, ed…