Search Results for: papule

What is your diagnosis? A solitary purple papule on the arm—Answer

What is your diagnosis? A solitary purple papule on the arm—Answer

Below is the answer to the quiz by Dr. Şenel et al presented in the previous issue of Dermatology Practical & Conceptual [2014;4(4):13]. Diagnosis: Kaposi sarcoma. Kaposi sarcoma (KS) was first described by Kaposi in 1872. There are four…

A Clinical Atlas of 101 Common Skin Diseases

Chondrodermatitis Nodularis Helicis

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…

A Clinical Atlas of 101 Common Skin Diseases

Darier’s Disease

A genetically determined disorder in which numerous closely set keratotic papules are present on the skin, especially the trunk, in nail units, and on mucous membranes, particularly the palate, but also rarely in other parts of the gastrointestinal…

A Clinical Atlas of 101 Common Skin Diseases

Cysts and Cystic Hamartomas

Papules, nodules, and tumors that, on gross examination, are usually skin colored and, on histopathologic examination, consist of an epithelium-lined sac that contains fluid, cells, or both in the case of true cysts and of cysts that are associated…

Histologic Diagnosis of Inflammatory Skin Diseases

Applicable Terms

…n 1.0 cm in diameter, lesion (Fig. 3.27). A plaque of psoriasis may come into being from extension centrifugally of a single papule or it may be a consequence of confluence of many papules. Plaques usually are acquired, as is the case in lichen…

Histologic Diagnosis of Inflammatory Skin Diseases

Lichen planus

…infiltrates of lymphocytes once were present there. Clinically, a blister in lichen planus does not form atop an established papule or plaque of the disease, and histopathologically, it is not associated with a lichenoid infiltrate of lymphocytes….

Histologic Diagnosis of Inflammatory Skin Diseases

Selection of the Site

…lesion may be misinterpreted as true urtica, a condition devoid entirely of such “dust.” If, however, a purpuric papule or a fresh vesicle is present, biopsy of either of them will disclose not only nuclear “dust” of…