Search Results for: neoplasms

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…

When all you have is a dermatoscope—start looking at the nails

When all you have is a dermatoscope—start looking at the nails

…; first published in Der Hautarzt, 2014, 65(4):301-11.) Onychopapilloma and subungual viral wart Onychopapilloma is a benign neoplasms, that originates from the distal nail matrix and/or the nail bed [11,12]. It typically presents with longitudinal…

Differential Diagnosis in Dermatopathology

Discussions

…ly vascular and edematous stroma. Despite the many changes histopathologic that apocrine and eccrine hidradenomas share, the neoplasms of wholly different nature can be distinguished from one another at a glance with scanning magnification by virtue…

Metastatic papillary thyroid carcinoma to the nose mimicking basal cell carcinoma: report and review of cutaneous metastases of papillary thyroid cancer

Metastatic papillary thyroid carcinoma to the nose mimicking basal cell carcinoma: report and review of cutaneous metastases of papillary thyroid cancer

…hat since “…the natural history of thyroid cancer is one of slow progression skin metastases may be confused with other skin neoplasms such as basal cell carcinoma…” [5] Indeed, their patient—a 70-year-old man—presented with a enlarged thyroid gland…

Differential Diagnosis in Dermatopathology

Metastatic carcinoma from a breast vs. Morpheiform basal-cell carcinoma

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

Discussions

…ion. “Decapitation secretion” is the sine qua non for establishing the apocrine nature of cysts, hamartomas, and neoplasms. Only exceedingly rarely do syringocystadenoma papilliferum and hidradenoma papilliferum eventuate in apocrine…

Differential Diagnosis in Dermatopathology

Lecture Series

…asal-Cell Carcinoma is Trichoblastic Carcinoma Part 1 | Part 2 Muir-Torre Syndrome Part 1 | Part 2 Are “Eccrine” Neoplasms Eccrine? Part 1 | Part 2 Specific Diagnosis Histopathologically of Inflammatory Skin Diseases Part 1 | Part 2 |…

Differential Diagnosis in Dermatopathology

Discussions

…nd, they have in common. Apocrine mixed tumors and eccrine mixed tumors share numerous findings that are possessed by benign neoplasms in general: vertical orientation often, sharp circumscription, smooth border, compression of enveloping connective…

Differential Diagnosis in Dermatopathology

Discussions

…sm. Although the finding of protrusion of cytoplasm into nuclei is not specific, it is seen mostly in melanocytic and neural neoplasms. The concept of neural crest derivation of granular-cell tumor is supported further by studies utilizing…