Search Results for: neoplasms

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Differential Diagnosis in Dermatopathology

Apocrine mixed tumor vs. Eccrine mixed tumor

A hamartoma of epidermis, epithelial structures of adnexa, and presumably dermal elements, typified, when fully formed, by a papillated or verrucous yellowish plaque situated usually on the scalp. The condition may present itself as a solitary…

Differential Diagnosis in Dermatopathology

Apocrine (clear-cell) hidradenoma vs. Eccrine (poroid) hidradenoma

A hamartoma of epidermis, epithelial structures of adnexa, and presumably dermal elements, typified, when fully formed, by a papillated or verrucous yellowish plaque situated usually on the scalp. The condition may present itself as a solitary…

Confusion—specimen mix-up in dermatopathology and measures to prevent and detect it

Confusion—specimen mix-up in dermatopathology and measures to prevent and detect it

…rgent diagnoses on the same neoplasm in an incisional biopsy and the subsequent re-excision specimen. However, two different neoplasms in the immediate vicinity of one another are not rare, especially in skin damaged severely by sunlight. Moreover,…

Differential Diagnosis in Dermatopathology

Differential Diagnosis

…lla present often 11. No hamartomas or neoplasms with adnexal differentiation concurrent in the section of tissue 11. Benign neoplasms with adnexal differentiation (e.g., trichoblastoma) and much less commonly malignant neoplasms (e.g., sebaceous…

Differential Diagnosis in Dermatopathology

Discussions

In general, neoplasms metastatic to the skin present little difficulty in differential diagnosis from neoplasms primary in the skin. Carcinoma of the breast is an exception. If there are but a few neoplastic cells and numerous inflammatory cells…

The mythical concept and untoward consequences of a diagnosis of dysplastic nevus: an overdue tribute to A. Bernard Ackerman, MD

The mythical concept and untoward consequences of a diagnosis of dysplastic nevus: an overdue tribute to A. Bernard Ackerman, MD

…ceptual 1996;2(1). 9. Farmer ER, Gonin R, Hanna MP. Discordance in the histopathologic diagnosis of melanoma and melanocytic neoplasms betweem expert pathologists. Hum Pathol 1996;27(6):528-31. 10. Hurt MA, Milette F. Correspondence: A letter to the…

Review of The Pigmentary System: Physiology and Pathophysiology (2nd ed) by James J. Nordlund, Raymond E. Boissy, Vincent J. Hearing, et al.

Review of The Pigmentary System: Physiology and Pathophysiology (2nd ed) by James J. Nordlund, Raymond E. Boissy, Vincent J. Hearing, et al.

…f a pathologist, the weakest part of the book. The section is divided in two parts devoted respectively to frequent and rare neoplasms. The designation “rare” should probably be replaced by “controversial,” as at least some entities discussed in…

Differential Diagnosis in Dermatopathology

Granular-cell tumor vs. Xanthoma

A hamartoma of epidermis, epithelial structures of adnexa, and presumably dermal elements, typified, when fully formed, by a papillated or verrucous yellowish plaque situated usually on the scalp. The condition may present itself as a solitary…

Papillary adenocarcinoma in situ of the skin: report of four cases

Papillary adenocarcinoma in situ of the skin: report of four cases

…ermatologica. 1991;182:47-51. 33. Denianke K, Ackerman AB, The issue of eccrine versus apocrine differentiation of cutaneous neoplasms affiliated with tubules, Dermatopatholology: Practical & Conceptual. 2003;9(4). 34. Crowson AN, Magro CM, Mihm…

Multiple familial trichoepithelioma: confirmation via dermoscopy

Multiple familial trichoepithelioma: confirmation via dermoscopy

Abstract Trichoepitheliomas are uncommon benign adnexal neoplasms that originate from the hair follicles. Multiple familial trichoepithelioma constitute an autosomal dominant disease characterized by the appearance of multiple flesh-colored,…

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