Histologic Diagnosis of Inflammatory Skin Diseases

Identification of Basic Patterns: Skin: Perivascular Dermatitis

See Figs. 5.16 A&B, 5.17 A&B, 5.18 A&B, 5.19 A&B, 5.20 A&B, 5.21 A&B, and 5.22 A&B Figure 5.16 A. Perivascular dermatitis, perivascular only, superficial. B. Perivascular dermatitis, perivascular only, superficial and…

Histologic Diagnosis of Inflammatory Skin Diseases

Errors and Reasons

Error: Abortive is an accurate modifier of particular pathologic processes, e.g., abortive dermatofibroma, abortive morphea, and abortive T-cell lymphoma. Reason: The idea itself is abortive! For example, what is called “abortive T-cell lympho…

Dermatology Practical & Conceptual

Dermatoscopic pattern of a cylindroma

Case report A 65-year-old man presented with an asymptomatic lesion on the left parietal scalp of 6 months’ duration. Three years prior, a cylindroma on the same area was excised by a general surgeon. Physical examination revealed a solitary 6 mm sa…

Histologic Diagnosis of Inflammatory Skin Diseases

Urticaria pigmentosa

Urticaria pigmentosa Synonyms Mastocytosis Presentation stereotypical Age and sex All ages and both sexes, but mostly nodules and blisters in infants and children, and mostly macules and papules in adults Distribution of lesions Localized or widespr…

Histologic Diagnosis of Inflammatory Skin Diseases

Precepts Adjunctive to the Algorithmic Method

Certain basic concepts that pertain to the method recommended here for diagnosis of inflammatory diseases of the skin and subcutaneous fat deserve mention. First, it is advantageous to examine sections of tissue, from the very outset, without refere…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Primary and Secondary Lesions?

“Some of the appearances observed in cutaneous diseases are caused directly by the deposition of morbid products in the skin. These bear the name of Primary symptoms or eruptions, Efflorescentiae cutaneae primariae. But these eruptions often…

Spotlight on “Rosacea”

Ocular Inflammation

The Problem | Review of the literature | Integration | Conclusion | References   The Problem It is well known that rosacea often affects not only the skin of the face, but also the eye. For a student of dermatology it is extremely difficult to…

Differential Diagnosis in Dermatopathology

Discussions

Histopathologically, lesions developed fully of discoid lupus erythematosus and polymorphous light eruption have in common the presence of moderately dense infiltrates made up overwhelmingly of lymphocytes around venules of both vascular plexuses. C…

Spotlight on “Rosacea”

What is Rosacea?

Rosacea is a common inflammatory facial skin disorder classically marked by flushing, facial erythema, inflammatory papules and pustules, and telangiectasias. It typically presents in adults, with prevalence reported as 1 to greater than 20%, with a…