Dermatology Practical & Conceptual

Dermatoscopic pattern of digital mucous cyst: report of three cases

…ry of a solitary, round, dome-shaped, fluctuant, asymptomatic nodule 8 mm in diameter located off the midline of the dorsal side of the third toe between the DIP joint and the proximal nail fold (Figure 1A). Polarized light dermoscopy without compres…

Dermatology Practical & Conceptual

Pigmented tumor in the nostril

…melanin [5]. The lesion most often arises as a solitary skin nodule on the face (85%) [4]; however, multiple IFK have been described in Cowden’s syndrome [6]. The cheek and the upper lip are the sites of predilection; other sites affected are…

Differential Diagnosis in Dermatopathology

Discussions

…theme pathologic. Clinically, xanthogranulomas are papules or nodules with a yellow, orange, or tan cast. The color results from abundant lipid in the cytoplasm of histiocytes that constitute the bulk of the lesion. The condition is better termed xan…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Primary and Secondary Lesions?

…e primary lesions include macules, patches, papules, plaques, nodules, tumors, vesicles, pustules, and bullae. Secondary lesions, by contrast, are said to be scales, crusts, erosions, ulcers, excoriations, lichenification, and fissures. Regrettably,…

Dermatology Practical & Conceptual

The dermatoscopic universe of basal cell carcinoma

…essels and blue-gray ovoid nests (a). Although nor the second nodule displays a pigment network, it exhibits dotted vessels and its pigmented structures are irregular brown/black globules and irregular peripheral streaks, in contrast to the well-circ…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Reactive Perforating Collagenosis?

…case for chondrodermatitis nodularis helices, picker’s nodules, surfer’s nodules, and nodules that form at the base of an amputation stump; the trauma in those conditions, however, results from something other than scratching. In short,…