Search Results for: macule

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Persistent Lentiginous Melanocytic Hyperplasia, Atypical Melanocytic Hyperplasia (Melanocytic Nuclear Atypia), Lamellar Fibroplasia, Concentric Fibroplasia, and Lymphocytes as Criteria for Diagnosis Histopathologic of Dysplastic Nevi?

…so-called dysplastic nevus is the most common melanocytic nevus in man, recognizable clinically in most instances as a brown macule or papule situated usually on the trunk or proximal part of the extremities. In the overwhelming majority of cases,…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Precursor Lesions of Melanoma?

…lderly people. Its precursor lesion, the lentigo maligna (Hutchinson’s melanotic freckle), is an irregularly pigmented macule which expands slowly.” Weedon D. Lentigines, nevi and melanomas. In: Skin Pathology. 2nd ed. London: Churchill…

Differential Diagnosis in Dermatopathology

Dermatofibroma vs. Dermatofibrosarcoma protuberans

An arteritis in the subcutaneous fat manifested clinically at first by one or more red nodules that, in time, become ulcerated and heal with scars, usually on the posterior aspect of the legs of short, thick-legged women. No cause is usually found,…

Differential Diagnosis in Dermatopathology

Pyogenic granuloma, fully developed vs. Kaposi’s sarcoma, nodular

An arteritis in the subcutaneous fat manifested clinically at first by one or more red nodules that, in time, become ulcerated and heal with scars, usually on the posterior aspect of the legs of short, thick-legged women. No cause is usually found,…

Review of Atlas of Vulvar Pathology. 3rd ed. by EJ Wilkinson, IK Stone

Review of Atlas of Vulvar Pathology. 3rd ed. by EJ Wilkinson, IK Stone

…and not in the chapter on malignant tumors. A melanoma certainly can present as a papular lesion, but it can also occur as a macule, a plaque or an ulcer and it certainly is a malignant tumor. Another evident flaw in this classification is…

Histologic Diagnosis of Inflammatory Skin Diseases

Vitiligo

…pigmentation, and lesions are scaly. Piebaldism is congenital, spares the midline, and is associated with poliosis. Ash-leaf macule of epiloia has a characteristic shape and is present in a setting of other defects congenital. Findings…

Differential Diagnosis in Dermatopathology

Discussions

…contrast, dermatofibrosarcoma protuberans presents itself at first clinically as a skin-colored, slightly yellowish or pink macule or patch that, in time, becomes an indurated plaque on which firm papules, nodules, and tumors develop. The lesion…

Differential Diagnosis in Dermatopathology

Discussions

…extravasation of red blood cells; a brownish papule when hyperpigmentation of the epidermis is striking; and resolution as a macule characterized by hypopigmentation in the center and hyperpigmentation at the periphery when the lesion has…