Search Results for: macule

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Normal, Typical, Ordinary, Banal, and Common Nevus?

…ired nevus undergoes a predictable evolution over a period of years or decades. . . Initially, it appears as a tiny pinpoint macule. . .” Greene MH, Clark WH Jr, Tucker MA, et al. Acquired precursors of cutaneous malignant melanoma: the…

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,…

Human papillomavirus-induced periungual pigmented Bowen’s disease

Human papillomavirus-induced periungual pigmented Bowen’s disease

Case report A 50-year-old male presented with an ill-defined hyperpigmented macule on the left pointer finger (Figure 1). The lesion was reportedly first evident one year prior to presentation. Clinically, the lesion was asymmetrical. Notably,…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Palpable Purpura?

…often with purpuric papules. For example, septic vasculitides, such as gonococcemia and meningococcemia, consist of purpuric macules and papules positioned usually on the acra. Purpura in these instances results from infarction, thrombi having…

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

…that intersect the angiomatous elements and, at last, involutes by progressive fibrosis. Kaposi’s sarcoma begins as a macule or patch that is characterized histopathologically by an increase in number of endothelium-lined spaces with jagged…