Search Results for: acanthosis

Histologic Diagnosis of Inflammatory Skin Diseases

Applicable Terms

…Increases in number and in size of spinous cells are seen together in some examples of lichen simplex chronicus. Figure 3.4 Acanthosis. Acanthosis is an attribute of diseases such as psoriasis and of psoriasiform dermatitides such as pityriasis…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…o have been rubbed, vigorously and persistently, by virtue of the extent of the hyperkeratosis, the hypergranulosis, and the acanthosis. 10.60.19A: Perivascular dermatitis, lichenoid, peri-infundibulitis, and perifolliculitis + 10.60.19B:…

Histologic Diagnosis of Inflammatory Skin Diseases

Algorithms Predicated on “Nonspecific” Findings

…cytes on an eyelid = Xanthelasma + Swath of foamy histiocytes across the upper third of the dermis = Xanthoma disseminatum + Acanthosis, usually verrucous, and foamy histiocytes confined to the papillary dermis = Verruciform xanthoma + Foamy…

Histologic Diagnosis of Inflammatory Skin Diseases

Lichen planus

…igo nodularis, imposed on a papule or plaque of lichen planus. The compact orthokeratosis, wedge-shaped hypergranulosis, and acanthosis of surface and infundibular epidermis typical of lichen planus are exaggerated in response to longstanding…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…lipophages, often are accompanied by countless erythrocytes extravasated in the dermis. 10.20.24A: Fibrosing dermatitis with acanthosis + 10.20.24B: Lipophages, some of them of Touton type + 10.20.24C + 10.20.24D = Dermatofibroma Touton giant cells…

Histologic Diagnosis of Inflammatory Skin Diseases

Persistent light reaction

…Correlation clinicopathologic Papules result mostly from patchy lichenoid infiltrates of inflammatory cells in company with acanthosis. Scale consists of orthokeratosis and parakeratosis. The appearance of lichenification derives from a…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…sis. 10.81.10A: Perivascular dermatitis, spongiotic + 10.81.10B: Lymphocytes only, edema of the papillary dermis, and slight acanthosis = Pityriasis rosea, early That this is a very early lesion can be told by the extent of edema in dermal papillae…

Histologic Diagnosis of Inflammatory Skin Diseases

Pityriasis rubra pilaris

…lightly interstitial infiltrate of lymphocytes Dilation and tortuosity of capillaries in dermal papillae Slight psoriasiform acanthosis; rete ridges not thin Pallor across the upper part of the viable epidermis Few mitotic figures present above the…