Search Results for: macule

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Parapsoriasis?

…uttate (dermatosis) parapsoriasis/digitate dermatosis simply are different expressions morphologic of mycosis fungoides at a macule/patch or subtle papule/plaque stage of the lymphoma. The diagnosis, in reality, for so-called parapsoriasis, then,…

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…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Metastasizing Dermatofibroma?

…injury, such as by the “bite” of an insect or by some other form of puncture. It presents itself first as a red macule that rapidly becomes a papule, which often turns purple and then brown. Histopathologically, the lesion consists…

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…