Search Results for: crust

Dermoscopic findings in reactive perforating collagenosis

Dermoscopic findings in reactive perforating collagenosis

…clinical and histological features, a diagnosis of RPC was established. Figure 3. (A) Cup–shaped ulceration with basophilic crust (hematoxylin and eosin, ×40). (C) Perforation through the epidermis forming a tunnel filled with cellular debris,…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…ous inflammation and, eventually, to fibrosis. 10.22.19A: Perivascular dermatitis, psoriasiform, patchy lichenoid with scale crust + 10.22.19B: Hyphae present in abundance + 10.22.19C + 10.22.19D = Dermatophytosis This is but one of many…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Reactive Perforating Collagenosis?

…pear blue rather than the usual red, and are found not only in the upper part of the dermis but in vertical array within the crust. The changes just described are a caricature of those seen in many examples of ordinary “neurotic…

Saved by step sections: an unusual presentation of basal cell carcinoma

Saved by step sections: an unusual presentation of basal cell carcinoma

…recurrence was seen at a six-month follow-up (Figure 4D). Figure 1. Clinical appearance: 2 cm erythematous patch with focal crusting and scaling. [Copyright: ©2011 Werner et al.] Figure 2A. Panoramic view of first section showing well demarcated…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…ecause the mixed-cell infiltrate is wedge-shaped, superficial and deep, and perivascular and interstitial. Moreover, a scale-crust is present directly above the apex of the wedge. The strikingly abnormal lymphocytes, however, make this lymphomatoid…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…s histopathologic. 10.25.4A: Perivascular dermatitis, interface, lichenoid + 10.25.4B: Predominance of lymphocytes and scale-crust atop an erosion = Lichenoid drug eruption Even at scanning magnification, a determination can be made that the…

Complete regression of a melanocytic nevus after epilation with diode laser therapy

Complete regression of a melanocytic nevus after epilation with diode laser therapy

…ate pigment network, ranging from light to dark brown in color. [Copyright: ©2015 Boleira et al.]   Figure 4. (A) Scale-crust and melanin granules over a reticular stratum corneum. Papillary dermis showed basophilic degeneration of collagen….

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…part of the dermis. In addition to the dominant histiocytes, there also are lymphocytes and eosinophils. An ulcer covered by crust is evident, too. 10.15.4A: Vasculitis, small vessel + 10.15.4B: Thrombi in the lumen of venules and numerous…