Differential Diagnosis in Dermatopathology

Insect "bite" vs. Lymphomatoid papulosis

…process being flaccid blisters that give way to erosions and crusts accompanied by erythema. When mostly the trunk is affected, the condition is termed “pemphigus foliaceus,” when mostly the face and upper part of the chest are involved,…

Differential Diagnosis in Dermatopathology

Discussions

…carial, often become vesicular, and of-times are covered by a crust. Because the lesions are so pruritic, evidences of excoriation in the form of erosions, ulcerations, and hemorrhagic crusts are expected. In contrast, papules of lymphomatoid papulos…

Histologic Diagnosis of Inflammatory Skin Diseases

Prurigo pigmentosa

…h a normal cornified layer with a basket-weave pattern Late Scale-crust that houses neutrophils Epidermis slightly acanthotic and parakeratotic Epidermis hyperpigmented Lymphocytes nearly monopolize in a very sparse infiltrate Melanophages range fr…

Histologic Diagnosis of Inflammatory Skin Diseases

Erythema multiforme

…dermis beneath a subepidermal blister Slight parakeratosis or scale-crust sometimes Correlation clinicopathologic Macules result from spongiosis, ballooning, and a superficial perivascular infiltrate of lymphocytes. Intraepidermal blisters develop s…

Differential Diagnosis in Dermatopathology

Discussions

…in mitosis. The epidermis may be thinned centrally and with a crust atop it. The dermis may be involved throughout the width of it, the process sometimes extending into the subcutaneous fat. Hemorrhage and fibroplasia may be present in both condition…

Dermatology Practical & Conceptual

The dermatoscopic universe of basal cell carcinoma

…ssels, keratin masses, white structureless areas, superficial scale, ulceration or blood crusts, blue-grey blotches and blood spots in keratin masses. Notably, nearly all BSC were reported to exhibit at least one BCC-related plus one SCC-related derm…