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Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Metastasizing Dermatofibroma?

…e. Dermatofibroma thus joins the ranks of “benign” tumors with rare metastasis which include such examples as uterine leiomyomas and salivary mixed tumor.” Colome-Grimmer MI, Evans HL. Metastasizing cellular dermatofibroma: a report…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Tricho-, pilo-, folliculo- ?

…ho-, and folliculo-, are named incorrectly. For example, pilar tumor is not a neoplasm of hair, but a follicular cyst with a lining like that of a normal isthmus and of a normal follicle well embarked on catagen. Proliferating pilar tumor also is a m…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Satellite, in Transit, Regional, and Distant Metastases?

…y are called remote metastases.“ Hertzler AE. Growth of tumors. In: A treatise on Tumors. Philadelphia, PA: Lea & Febiger, 1912:28. “Dermal and subcutaneous metastases (satellites, intransit, or ‘remote’ metastases) are…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Blue Nevus?

…1989;13:39-44. “Blue nevi are benign dermal melanocytic tumors defined originally in terms of their clinically characteristic blue-black color.” Elder DE, Murphy GF. Benign melanocytic tumors (nevi). In: Atlas of tumor pathology: melano…

Dermatology Practical & Conceptual

From the Dermatologikum Hamburg: Quiz

…January 2012, immunostaining with the endothelial marker Wilms tumor 1 (WT1) has been investigated in larger series of the tumor and has illuminated the nature of it. WT1 is considered to be expressed by vascular neoplasms but not by malformations. T…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Malignant Spitz Nevus?

…ology. In: Emmett AJJ, O’Rourke MGE, eds. Malignant Skin Tumors. 2nd ed. Edinburgh, Scotland: Churchill-Livingstone, 1991:84. “The malignant Spitz tumor is characterized by a relatively high mitotic rate and mitosis deep within the lesio…

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