Dermatology Practical & Conceptual

Dermatoscopic pattern of a cylindroma

…ple irregular lobules in a jigsaw-mosaic pattern diagnostic of cylindroma (Figures 3 and 4). Figure 1. Clinical view of the cylindroma on the left parietal scalp. [Copyright: ©2014 Cohen et al.] Figure 2. Dermatoscopic view shows several scatte…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Eccrine Neoplasms?

Classification of Skin Appendage Tumors Eccrine Differentiation Eccrine nevus Eccrine duct proliferation Eccrine-centered nevus Eccrine angiomatous hamartoma Syringofibroadenoma or acrosyringeal nevus Comedo nevus of the palm, linear eccrine nevu…

Dermatology Practical & Conceptual

Dermatoscopic pattern of a spiradenoma

…ry of the aggregations. The latter feature is reminiscent of a cylindroma but the aggregates of cells are too large. Cylindroma-like features may be encountered in spiradenomas and sometimes these two entities occur together suggesting a common origi…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Origin of Adnexal Neoplasms?

“Thus one needs to bear in mind the information required of a pathologist about a particular tumour, which can be summarized as follows: 1. What is the origin of the tumour? 2. What is likely the behavior of the tumour? 3. What is the extent…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Sebaceous Epithelioma?

“Sebaceous epithelioma or sebaceoma. . . Sebaceous epithelioma, in contrast to sebaceous adenoma, grows in irregular masses and does not contain as many mature sebaceous cells.” Hashimoto K, Lever WF. Tumors of skin. In: Fitzpatrick TB…

Dermatology Practical & Conceptual

The dermatoscopic universe of basal cell carcinoma

Abstract Following the first descriptions of the dermatoscopic pattern of basal cell carcinoma (BCC) that go back to the very early years of dermatoscopy, the list of dermatoscopic criteria associated with BCC has been several times updated and rene…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Hyalin?

“With the high power the hyaline is seen in very varied forms, which all show the same fuchsin red reaction. The first forms a section by itself; it comprises hyaline balls of different size, which lie free between the epithelial cells, and w…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Study By Disease

“Blue nevus” (Jadassohn-Tièche) (Quiz #360) “Blue nevus” (Jadassohn-Tièche) (Quiz #525) “Blue nevus” (Masson’s blue neuronevus) (Quiz #359) “Collagenous” nevus, papillary dermal type* (Quiz #11…