Differential Diagnosis in Dermatopathology

Discussions

Staphylococcal scalded skin syndrome and severe erythema multiforme are blistering dermatitides that Lyell, a Scotch dermatologist, in 1956, considered to be a single disease because they both can resemble scalded skin clinically. He designated that…

Differential Diagnosis in Dermatopathology

Lichen sclerosus et atrophicus vs. Superficial morphea

A papular and pustular inflammatory process that is centered in follicles and is distributed mostly in the middle third of the face in both vertical and horizontal directions. Among the varied manifestations of rosacea are innumerable telangiectases…

Differential Diagnosis in Dermatopathology

Discussions

At first glance, a reader might think an error previous has been made because the two columns preceding are identical, but that was done deliberately; lichen sclerosis et atrophicus is superficial morphea. Morphea is one of the sclerodermas and lich…

Differential Diagnosis in Dermatopathology

Dermatofibroma vs. Desmoplastic Spitz’s nevus

A papular and pustular inflammatory process that is centered in follicles and is distributed mostly in the middle third of the face in both vertical and horizontal directions. Among the varied manifestations of rosacea are innumerable telangiectases…

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

Discussions

Despite the differences biologic between dermatofibroma (an inflammatory process) and desmoplastic (fibrosing, largely intradermal) Spitz’s nevus (a benign neoplastic process), the two conditions have many attributes morphologic in common. Bot…

Differential Diagnosis in Dermatopathology

Atrophic lichen planus vs. Atrophic discoid lupus erythematosus

A papular and pustular inflammatory process that is centered in follicles and is distributed mostly in the middle third of the face in both vertical and horizontal directions. Among the varied manifestations of rosacea are innumerable telangiectases…

Differential Diagnosis in Dermatopathology

Discussions

Junctional melanocytic nevus and melanoma in situ on sun-damaged skin of a face (so-called lentigo maligna) are both proliferations of melanocytes in which nests tend to form in a hyperpigmented epidermis and melanophages accumulate in a thickened p…