Search Results for: nerves

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Blue Nevus?

…roblastic sarcoma, (3) . . . a plexiform neuroma constituted of interlaced ribbons with large knots of voluminous [or bulky] nerves . . .” Masson P. Système Mélanogène. In: Tumeurs Humaines: HistologieDiagnostic et Techniques [Human tumors:…

Histologic Diagnosis of Inflammatory Skin Diseases

Nail Units

…f a nail. Nails have several functions. Most important, they protect the terminal phalanges. A network of myelinated sensory nerves in the dermis of the nail bed, some nerves of which terminate near Merkel cells within the epithelium of the nail…

Histologic Diagnosis of Inflammatory Skin Diseases

Introduction

…ctures of the dermoepithelial interface, blood vessels, lymphatics, collagen, elastic fibers, ground substance, muscles, and nerves. The strategy is to inform about how the skin looks by examination grossly and by inspection using conventional…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…es of necrosis in the context of signs of borderline leprosy are indications that the patient is in reaction. Involvement of nerves by lymphocytes is not, in itself, a sign of a reactional state; lymphocytes sometimes are present in nerves of…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Myxoma?

…known more popularly as “neurothekeoma,” which is a benign neoplasm not of mucin but stromal cells of peripheral nerves. Parenthetically, both “intramuscular myxoma” and “cardiac myxoma” represent deposits of…

A keratoacanthoma with venous invasion

A keratoacanthoma with venous invasion

…inising tumour and an SCC variant characterised by benign (non-metastasising) behaviour [1]. Although invasion of peripheral nerves has been reported [2,5] this has not been associated with an adverse prognosis. One of the authors (DW, data not…

Differential Diagnosis in Dermatopathology

Discussions

…uberculoid leprosy is characterized stereotypically by one or several discrete, hypopigmented anesthetic patches. Peripheral nerves may be thickened palpably in patients with that particular form of the disease. Patients with tuberculoid leprosy are…

Histologic Diagnosis of Inflammatory Skin Diseases

Confusing Terms (to be Avoided Scrupulously)

…;itis (inflammation of)]: A term meant to describe changes in the skin that were thought to be related in some way to “nerves,” either organically or psychologically. Two types of neurodermatitis have been described, namely,…

Histologic Diagnosis of Inflammatory Skin Diseases

Subcutaneous Fat

…lomerations of subcutaneous adipocytes into lobules. The fibrous septa also house muscle-containing vessels, lymphatics, and nerves. (x25) Arteries and veins in the subcutaneous fat are positioned within the major fibrous septa (Figs. 1.87 and…

Histologic Diagnosis of Inflammatory Skin Diseases

Blood Vessels

…ures of adnexa (folliculosebaceous-apocrine units and eccrine units) and nonepithelial structures of adnexa (smooth muscles, nerves, and medium-sized and larger blood vessels). Figure 1.72 The dermal vasculature consists of a network of two plexuses…