Search Results for: scale-crust

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….

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…

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,…

Histologic Diagnosis of Inflammatory Skin Diseases

Erythema marginatum

…extremities of healthy adults and presents itself as annular lesions that, at their periphery, are topped by collarettes of scale. Urticaria consists of evanescent edematous pink papules and/or plaques that usually are distributed widely and are…

Histologic Diagnosis of Inflammatory Skin Diseases

Prurigo pigmentosa

…is en masse in foci Collections of neutrophils often found beneath a normal cornified layer with a basket-weave pattern Late Scalecrust that houses neutrophils Epidermis slightly acanthotic and parakeratotic Epidermis hyperpigmented Lymphocytes…

Differential Diagnosis in Dermatopathology

Discussions

…s. Papules that result from insect “bites” are urticarial, often become vesicular, and of-times are covered by a crust. Because the lesions are so pruritic, evidences of excoriation in the form of erosions, ulcerations, and hemorrhagic…

Differential Diagnosis in Dermatopathology

Differential Diagnosis

Psoriasis Nummular Dermatitis 1. Confluent parakeratosis 1. Focal scalecrust 2. Granular zone mostly absent 2. Granular zone mostly present 3. Psoriasiform acanthosis with rete ridges of even length; some rete ridges thinned and some of those…

The dermatoscopic universe of basal cell carcinoma

The dermatoscopic universe of basal cell carcinoma

…scopic criteria of BSC are unfocused (peripheral) arborizing vessels, keratin masses, white structureless areas, superficial scale, ulceration or blood crusts, blue-grey blotches and blood spots in keratin masses. Notably, nearly all BSC were…

Differential Diagnosis in Dermatopathology

Psoriasis vs. Nummular dermatitis

…inous zone or granular zone of the epidermis, the result of the process being flaccid blisters that give way to erosions and crusts accompanied by erythema. When mostly the trunk is affected, the condition is termed “pemphigus…

Regressing basal-cell carcinioma masquerading as benign lichenoid keratosis

Regressing basal-cell carcinioma masquerading as benign lichenoid keratosis

…rthokeratosis, mounts of parakeratosis, acanthosis, elongated rete ridges, sawtooth pattern of rete ridges and presence of a crust. Each of those criteria was assessed in four grades, from absent (0), to weak (+), moderate (++), and marked (+++)….