Search Results for: scale-crust

Differential Diagnosis in Dermatopathology

Differential Diagnosis

…Infiltrate of inflammatory cells not wedge-shaped 3. No mounds of parakeratosis usually 3. Mounds of parakeratosis often 4. Crust above site of spongiosis or spongiotic vesiculation sometimes 4. No crust 5. Single focus of spongiosis often at the…

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….

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…

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…

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…

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…

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…

Zosteriform cutaneous leishmaniasis diagnosed with the help of dermoscopy

Zosteriform cutaneous leishmaniasis diagnosed with the help of dermoscopy

…srael a month before the rash appeared. On examination, two erythematous nodules, with a central ulcer covered with a yellow crust, were evident on the upper right back (Figure 1A). An erythematous papule was evident as a satellite lesion. Three…

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….

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Cutaneous T-cell Lymphoma?

…n CTCL, patches are often erythematous, but may be red-brown, violaceous, or orange; the patches may be surmounted by a fine scale. A somewhat irregular or notched border may help differentiate early CTCL from clinically similar benign dermatoses,…