Histologic Diagnosis of Inflammatory Skin Diseases

Applicable Terms

…trophicus, lichen simplex chronicus, and lichen myxedematosus. MACULE [L. macula (spot)]: A small, flat, nonpalpable spot on the skin, up to 1.0 cm in size, and of a color different from that of the surrounding normal skin. A larger analogue of a mac…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Lentigo Maligna?

“Melanoma arising from lentigo maligna is preceded by or forms a part of a recognizable series of events affecting the melanocytic cellular system in a way similar to these stages. First, there is a long period characterized by an increase in…

Dermatology Practical & Conceptual

From the Dermatologikum Hamburg: Quiz

The patient A 48-year-old woman presented herself with an erythematous macule on the extensor surface of the right thigh. The lesion had been present for years, but recently the patient noticed some increase in size and changes in the coloration. Th…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

Images 10.80.1A: Perivascular dermatitis, lymphocytic + 10.80.1B: Lymphocytes in tiny foci of spongiosis = Pityriasis alba  The changes could be misinterpreted as those of a flat lesion of mycosis fungoides, but the absence of any alterat…

Dermatology Practical & Conceptual

Saved by step sections: an unusual presentation of basal cell carcinoma

Abstract Background: Basal cell carcinoma usually occurs in sun exposed areas of older male individuals. Objectives: To emphasize the importance of histological step sections in the pursuit of the correct diagnosis when microscopic findings do not…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Dermatofibroma?

“Cutaneous fibroma Fibroma simplex Simple fibroma of the skin, as defined above, is a benign tumor, usually appearing solitary, on the upper part of the body and the extremities, which, mainly imbedded in the skin, is only rarely and little…