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Histologic Diagnosis of Inflammatory Skin Diseases

Traction alopecia

…of a follicle, rather than along the infundibulum mostly, the fibroplasia around infundibula and follicles is joined by lymphocytes, rather than lymphocytes in a band being separated from those epithelia by a zone of fibroplasia, and fibrous tracks a…

Histologic Diagnosis of Inflammatory Skin Diseases

Erythema elevatum diutinum

…ear “dust” of neutrophils throughout the zones of fibroplasia Scattered eosinophils, lymphocytes, and plasma cells in zones of fibroplasia Prominent vasculature in the lesion; venules with a thick wall, but no fibrin in it Differential d…

Differential Diagnosis in Dermatopathology

Discussions

…hic scars have many findings histopathologic in common (e.g., fibroplasia, telangiectases, infiltrates of inflammatory cells, mucin) and, in some instances, attributes of what seem to be both keloid and hypertrophic scar may be found together in sect…

Histologic Diagnosis of Inflammatory Skin Diseases

Cicatricial pemphigoid

…th the base of a subepidermal blister. The more prominent the fibroplasia, the more times a blister is likely to have formed at that site anew. Quantitation of the extent of fibrosis is analogous to that in regard to the number of melanophages and th…

Differential Diagnosis in Dermatopathology

Keloid vs. Hypertrophic scar

…ntly from external trauma, usually in the form of a puncture or a yank of a “hang nail.” In time, the proliferation of vessels ceases, there is progressive fibroplasia, and the then gray or white papule shrinks and eventually disappears….

Differential Diagnosis in Dermatopathology

Differential Diagnosis

…icular dermis 7. Mucin increased in the reticular dermis 8. Fibroplasia, but not sclerosis, in the seemingly thickened papillary dermis; number of fibrocytes increased 8. Sclerosis in the upper part of the dermis; number of fibrocytes decreased 9…

Differential Diagnosis in Dermatopathology

Angiolymphoid hyperplasia with eosinophilia vs. Kimura’s disease

…ntly from external trauma, usually in the form of a puncture or a yank of a “hang nail.” In time, the proliferation of vessels ceases, there is progressive fibroplasia, and the then gray or white papule shrinks and eventually disappears….

Differential Diagnosis in Dermatopathology

Discussions

…lls that may be plump and contain abundant cytoplasm, display fibroplasia, exhibit many plasma cells, and spare epithelial and non-epithelial structures of adnexa. Despite these elements in common, angiolymphoid hyperplasia with eosinophilia and Kimu…

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