Search Results for: papule

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Regressing basal-cell carcinioma masquerading as benign lichenoid keratosis

Regressing basal-cell carcinioma masquerading as benign lichenoid keratosis

…re commonly [1-4]. The individual lesion has been described as a “sharply demarcated, erythematous, violaceous, tan or brown papule or plaque” measuring between 0.3 and 2 mm in diameter [4]. Although “the surface is often scaly” [4], lesions are…

Histologic Diagnosis of Inflammatory Skin Diseases

Farmyard pox

…pox presents itself as widespread vesiculopustular lesions, especially on the trunk. Anthrax (malignant pustule) begins as a papule, but soon develops into a vesicle associated with necrosis and surrounded at times by small satellite vesicles….

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Dermatofibroma?

…fills criteria for an inflammatory, rather than a neoplastic, process. It begins as a pink macule that quickly becomes a red papule and sometimes even a red or purple nodule. In time the domed lesion becomes brown, and, in the course of years, it…

Differential Diagnosis in Dermatopathology

Differential Diagnosis

Acne vulgaris, erythematous papule Rosacea, erythematous papule 1. Only one follicle involved usually in a 4 mm biopsy specimen 1. Nearly all follicles involved usually in a 4 mm biopsy specimen 2. Suppurative infundibulitis prominent 2….

Differential Diagnosis in Dermatopathology

Images

…Acne vulgaris, erythematous papule Rosacea, erythematous papule

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Changing Mole?

…words like “wen” (instead of follicular cyst of the isthmus-catagen type), “pimple” (for any reddish papule), and “jock itch” (for dermatophytosis in the inguinal region). Lay persons cannot be expected to employ…

Differential Diagnosis in Dermatopathology

Trichoblastoma, small nodular type vs. Trichoblastoma, large nodular type

A papule, sometimes eroded, ulcerated, crusted, or keratotic, on a helix or antehelix consequent to the effects of persistent trauma. Because a lesion of chondrodermatitis nodularis helicis results from the effects of external trauma, analogous to…

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