Search Results for: scale-crust

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…nd perifolliculitis shown is not specific, but were it on a face, it could be that of acne vulgaris or of rosacea. Mounds of scalecrust at the lips of an infundibular ostium indicate that seborrheic dermatitis is concurrent in this patient….

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Chondrodermatitis Nodularis Helicis?

…chondrodermatitis nodularis helicis, consist of papules or nodules, and they tend to become eroded, ulcerated, fissured, and crusted, also as a result of the external trauma. As might be expected, the constellation of papular and nodular lesions…

Histologic Diagnosis of Inflammatory Skin Diseases

Phaeohyphomycosis

…are formed of suppuration joined by granulomatous inflammation that, in time, is followed by fibrosis. Epidermal changes of scalecrust result from parakeratosis accompanied by plasma and neutrophils. Dematiaceous (black) fungi may be present as…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…eic dermatitis, not only because the biopsy specimen did not come from the face or chest, but because there are no mounds of scalecrust at lips of the infundibular ostium. A subtle “plug” of corneocytes is present in the infundibular…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…n those in dermis, and elongated mounds of parakeratosis = Mycosis fungoides, plaque Elongated mounds of parakeratosis or of scalecrust are seen often in patches and plaques of indubitable mycosis fungoides, such as in the example depicted here….

Hypopigmented atypical Spitzoid neoplasms (atypical Spitz nevi, atypical Spitz tumors, Spitzoid melanoma): a clinicopathological update

Hypopigmented atypical Spitzoid neoplasms (atypical Spitz nevi, atypical Spitz tumors, Spitzoid melanoma): a clinicopathological update

…0-yr-old girl. Clinically (A) the lesion is firm red nodule with a central depression. Dermoscopically (B), a central yellow crust could resemble the umbilication of a molluscum contagiosum; however, vessels around the crust are atypical; in…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…exuberant manifestation of pemphigus vulgaris in which countless eosinophils are present in a thickened epidermis covered by scalecrust. At scanning magnification, aspects of pemphigus vulgaris are not apparent; higher magnification is required to…

From the Dermatologikum Hamburg: Quiz

From the Dermatologikum Hamburg: Quiz

…he scalp The section pictured in Figure 2A-S shows an eroded and partly ulcerated epidermis (Figure 2G) covered by extensive scale crust housing numerous neutrophils (Figure 2S). Some neutrophils are scattered within the epidermis (Figures 2D and…

The relevance of recognizing clinical and morphologic features of pityriasis lichenoides: clinicopathological study of 29 cases

The relevance of recognizing clinical and morphologic features of pityriasis lichenoides: clinicopathological study of 29 cases

…meters evaluated. In the epidermis: acanthosis, spongiosis, lymphocyte exocytosis, parakeratosis, necrotic keratinocytes and scale crust. And in the dermis: papillary edema hemorrhage, perivascular lymphocytic infiltrate and atypical lymphocytes….

The dermoscopic variability of Degos disease at different stages of progression

The dermoscopic variability of Degos disease at different stages of progression

…by an erythematous halo (Figure 1a), while papules of longer duration displayed a central ulceration covered by a yellowish crust and were surrounded by a whitish rim (Figure 2a). Finally, porcelain-white scars with a reddish or hyperpigmented halo…