Differential Diagnosis in Dermatopathology

Discussions

…gic between Mucha-Habermann disease and secondary syphilis may be difficult because the two diseases have so many attributes in common. Both may be associated with a superficial and deep perivascular and lichenoid infiltrate of mononuclear cells, aca…

Differential Diagnosis in Dermatopathology

Papular mucinosis vs Interstitial granuloma annulare

…oss of hair attributable either to the effects of inflammatory cells on follicles or to physiological or mechanical factors in which inflammatory cells play no role. Although the scalp is the site most often affected, any region of the skin that bear…

Differential Diagnosis in Dermatopathology

Lymphomatoid papulosis vs. Mycosis fungoides, plaque

…oss of hair attributable either to the effects of inflammatory cells on follicles or to physiological or mechanical factors in which inflammatory cells play no role. Although the scalp is the site most often affected, any region of the skin that bear…

Histologic Diagnosis of Inflammatory Skin Diseases

Borreliosis (erythema migrans)

…and, sometimes, interstitial infiltrate of lymphocytes joined by eosinophils in the vicinity of the “bite” of the tick and by plasma cells at the margin of an expanding lesion Spongiosis rarely Correlation clinicopathologic Elevation ab

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…t an early stage in a longstanding inflammatory process, i.e., before any alterations in collagen bundles have become recognizable. When, after years, the process nears completion, no infiltrate of inflammatory cells remains, only bundles of collagen…

Differential Diagnosis in Dermatopathology

Discussions

…toid papulosis have many attributes histopathologic in common. Both consist of infiltrates whose pattern is superficial and deep, perivascular, and interstitial, and whose population of cells may be mixed, i.e., small lymphocytes, large lymphocytes,…