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Differential Diagnosis in Dermatopathology

Discussions

Infundibulo-folliculo-sebaceous cystic hamartoma and steatocystoma are both cystic hamartomas. Neither is simply a cyst because the structures that comprise each of them are not mere epithelium-lined sacs that house fluid or solid elements, but are…

Differential Diagnosis in Dermatopathology

Infundibulo-folliculo-sebaceous cystic hamartoma vs. Steatocystoma

An inflammatory process in which lesions present themselves clinically as red macules and subtle scaly papules. They soon become so confluent that there is widespread redness and scaling punctuated by islands of skin that ostensibly are spared and b…

Differential Diagnosis in Dermatopathology

Trichoadenoma vs. Microcystic adnexal carcinoma

An inflammatory process in which lesions present themselves clinically as red macules and subtle scaly papules. They soon become so confluent that there is widespread redness and scaling punctuated by islands of skin that ostensibly are spared and b…

Histologic Diagnosis of Inflammatory Skin Diseases

Eosinophilic folliculitis

Eosinophilic folliculitis Synonyms Sterile eosinophilic pustulosis Eosinophilic pustular dermatosis Circinate eosinophilic dermatosis Presentation stereotypical Age and sex Infants of both sexes, restricted usually to the scalp; young adults, especi…

Differential Diagnosis in Dermatopathology

Discussions

Both sebaceous hyperplasia and nevus sebaceus of Jadassohn consist of abnormalities of sebaceous glands but the former, as the name denotes, is a hyperplasia, whereas the latter is a hamartoma that involves not only sebaceous units, but other adnexa…

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

Dermatofibroma and dermatofibrosarcoma protuberans are lesions made up of dense diffuse infiltrates of mesenchymal cells in company with bundles of collagen, the two together occupying at least much of the thickness of the dermis and sometimes part…

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