Search Results for: neoplasms

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Histiocytoses?

…lignant histiocytosis” is as flawed as “histiocytic lymphoma.” All lymphomas, by definition, are malignant neoplasms of lymphocytes; none are malignant neoplasms of histiocytes. As must be apparent, it makes no sense to gather…

Billings SD, Cotton J. Inflammatory Dermatopathology. A Pathologist’s Survival Guide. New York: Springer Science + Business Media LLC, 2011

Billings SD, Cotton J. Inflammatory Dermatopathology. A Pathologist’s Survival Guide. New York: Springer Science + Business Media LLC, 2011

…sis, and arthropod bite reaction, and the authors do not comment on this somewhat bizarre organization of diseases. If those neoplasms deserved a paragraph of their own, why not include mycosis fungoides, which is a much more common diagnosis and…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Mammary and Extramammary Paget’s Disease?

…from which they may metastasize. Cytopathologically, there are striking differences between the two very different malignant neoplasms, to wit, mammary Paget’s disease and extramammary Paget’s disease. Signet-ring cells replete with…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

-oid?

…lies to Spitz nevus remains elusive. The term “epithelioid sarcoma” verges on oxymoron. Carcinomas are malignant neoplasms of epithelial cells; sarcomas are malignant neoplasms of nonepithelial cells. The sarcoma that Enzinger designated…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Metastasizing Dermatofibroma?

…broma: a report of two cases. Am J Surg Pathol 1996;20:1361–67. “Low-grade (and in some cases benign) mesenchymal neoplasms of the skin may metastasize to the lung, sometimes many years after the excision of the primary lesion.”…

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…

Whitish halo on a papular pigmented lesion

Whitish halo on a papular pigmented lesion

…orrisome clinical morphology, characterized by a nodular or papular consistency that slowly regresses, the majority of these neoplasms are benign, confirming the extreme rarity of melanoma in infancy [2-6]. Sometimes immunohistochemical analyses can…

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…