Search Results for: hyperkeratosis

Histologic Diagnosis of Inflammatory Skin Diseases

Epidermis

…lfatase, that absence preventing removal of cholesterol sulfate and, thereby, limiting shedding of corneocytes, resulting in hyperkeratosis that is reflected clinically in plate-like scales. Small molecules, metabolites, and ions are able to pass…

A reticulated pigmented rash on the lower leg

A reticulated pigmented rash on the lower leg

…ent may be nonspecific. Slight atrophic changes within the epidermis, apoptotic keratinocytes, increased melanin deposition, hyperkeratosis, and mononuclear infiltrate at the dermo-epidermal junction may be seen. It has also been proposed that…

Lichenoid keratosis: non-invasive imaging in the setting of diagnostic uncertainty

Lichenoid keratosis: non-invasive imaging in the setting of diagnostic uncertainty

…a seborrheic keratosis, including focal areas of acanthosis, invaginations and elongation of the rete ridges in addition to hyperkeratosis and parakeratosis in the stratum corneum. Additionally, a few proliferations of sharply demarcated…

Histologic Diagnosis of Inflammatory Skin Diseases

Introduction

…dient in cement, a patient may not be able to utilize his or her hands effectively because they are restricted so greatly by hyperkeratosis and by fissures that form within the abnormally cornified epidermis. In short, without firm grounding in…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…e shown are seen most often in epidermal nevi that sport cornoid lamellae. A cornoid lamella is an analogue of epidermolytic hyperkeratosis and a focal acantholytic dyskeratosis, those being patterns histopathologic of different types of epidermal…

Differential Diagnosis in Dermatopathology

Discussions

…cosus and acanthosis nigricans are processes that affect the papillary dermis and the epidermis. Both conditions may display hyperkeratosis, epidermal hyperpigmentation, papillomatosis, melanophages, and an increased number of fibrocytes in a…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…air = Suppurative infundibulitis of bacterial cause Because this lesion is domed and infundibula display hypergranulosis and hyperkeratosis, it must have been rubbed persistently and forcefully, probably because of effects pruritogenic on nerves of…

Differential Diagnosis in Dermatopathology

Discussions

…osis.” That latter pattern is analogous to other distinctive patterns of epithelium in the skin, such as epidermolytic hyperkeratosis, focal acantholytic dyskeratosis, cornoid lamellation, and epithelial (follicular) mucinosis. When pale-cell…