Differential Diagnosis in Dermatopathology

Granular-cell tumor vs. Xanthoma

…nd scalp. A papule of it tends to become a plaque, a nodule, a tumor, or all of them concurrently. Sometimes a plaque is interspersed with many nodules and tumors in a cluster. The sarcoma is "low grade," i.e., it metastasizes only episodic…

Dermatology Practical & Conceptual

Glomangiosarcoma in the shoulder of a 51-year-old man

…©2012 Rishi et al.] Discussion Although glomangioma and glomus tumor and glomangiosarcoma and malignant glomus tumor have been used interchangeably in the literature, we recommend the use of glomangioma and glomangisarcoma for benign and malignant gl…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Radial Growth Phase versus Vertical Growth Phase of Melanoma?

…nd deeper structures (vertical growth phase).” Rosai J. Tumors and tumor-like conditions. In: Ackerman’s Surgical Pathology. 7th ed. St. Louis, MO: CV Mosby Co., 1989:134. “The radial growth phase or ‘nontumorigenic melanoma…