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Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Chondrodermatitis Nodularis Helicis?

“At the dermatology meeting in Berlin, Jadassohn also indicated that changes in the cartilage can often be established clinically, especially the knobby sites on the helix that show a whitish transparence through a thinned epidermis. My expe…

Differential Diagnosis in Dermatopathology

Differential Diagnosis

…matous changes may be present secondarily 11. Multinucleate fibrocytes in a thickened papillary dermis often 11. No multinucleate fibrocytes usually 12. Edema of the papillary dermis common 12. No edema of the papillary dermis 13. No wiry bund…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

Images 10.38.1A: Pustular dermatitis, infundibular + 10.38.1B: A hair containing hyphae in an abscess = Suppurative infundibulitis of dermatophytic cause (Majocchi’s granuloma) The hair was spewed into the dermis when an infundibul…

Differential Diagnosis in Dermatopathology

Differential Diagnosis

…c cells are thickened and brightly eosinophilic; the number of fibrocytes often is decreased 10. Collagen bundles that surround the neoplastic cells usually are fibrillar and amphophilic; the number of fibrocytes is increased 11. No elastotic mater…

Differential Diagnosis in Dermatopathology

Discussions

…vus, elastic fibers may be normal in number or decreased. When fibrocytes are increased in such a nevus, they may assume various shapes, e.g., oval, spindle, and dendritic, and they may be multinucleate. A remarkable feature of nuclei of fibrocytes i…

Differential Diagnosis in Dermatopathology

Differential Diagnosis

…n preserved 4. Decrease in number of oval and spindle-shaped fibrocytes; no pleomorphism of them 4. Slight increase in number of stellate-shaped fibrocytes; some of them with pleomorphic nuclei 5. Elastic fibers normal in number and appearance; n…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Follicular Degeneration Syndrome?

…ar layer Epidermal changes not prominent Increased number of fibrocytes around the upper part of a follicle, but no concentration of fibrocytes at the isthmus Lamellar fibroplasia at the level of the isthmus Despite these sets of findings seemin…

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