Differential Diagnosis in Dermatopathology

Discussions

Spongiotic dermatitis with discrete collections of cells in the epidermis and mycosis fungoides with discrete collections of cells in the epidermis (Pautrier’s “microabscesses”) share some findings histopathologic, including the pr…

Histologic Diagnosis of Inflammatory Skin Diseases

Irritant contact dermatitis/Phototoxic dermatitis

…to 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. A Textb…

Differential Diagnosis in Dermatopathology

Pemphigus vulgaris vs. Grover’s disease, pemphigus vulgaris-like

Noninflammatory scaly disorders in which polygonal gray or brown scales tend to be elevated at their periphery, causing them to appear to be separated from contiguous scales, findings that are seen in three conditions, namely, ichthyosis vulgaris (a…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Churg-Strauss Granuloma and Allergic Granulomatosis?

…olytic Dyskeratosis, e.g., Abscesses in Dermal Papillae and in Subepidermal Spaces, e.g., Dariers disease Dermatitis herpetiformis Grover’s disease Linear IgA dermatosis A type of epidermal nevus Acquired epidermolysis

Differential Diagnosis in Dermatopathology

Discussions

…a when widespread and ichthyosis hystrix when circumscribed in systematized fashion), and focal acantholytic dyskeratotic (so-called linear or systematized Dariers disease, a misnomer), in addition to the porokeratotic type under discussion he…

Differential Diagnosis in Dermatopathology

Herpes simplex vs. Vaccinia

Noninflammatory scaly disorders in which polygonal gray or brown scales tend to be elevated at their periphery, causing them to appear to be separated from contiguous scales, findings that are seen in three conditions, namely, ichthyosis vulgaris (a…

Histologic Diagnosis of Inflammatory Skin Diseases

Erythema annulare centrifugum

Erythema annulare centrifugum Synonyms Erythema perstans Erythema gyratum perstans Erythema figuratum perstans Presentation stereotypical Age and sex Middle-aged or older adults of both sexes; children sometimes Distribution of lesions Any part of t…

Differential Diagnosis in Dermatopathology

Tuberculoid leprosy vs. Sarcoidosis

Noninflammatory scaly disorders in which polygonal gray or brown scales tend to be elevated at their periphery, causing them to appear to be separated from contiguous scales, findings that are seen in three conditions, namely, ichthyosis vulgaris (a…

Differential Diagnosis in Dermatopathology

Discussions

…erpetiformis 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 Dariers disease, spread fast of the in…

Differential Diagnosis in Dermatopathology

Discussions

Tuberculoid leprosy and sarcoidosis are granulomatous dermatitides that resemble one another histopathologically because both consist of aggregations of epithelioid histiocytes in the dermis and, sometimes, in the subcutaneous fat. Despite the simil…