Search Results for: hyperkeratosis

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…

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

Radiation dermatitis and panniculitis

…n often Vacuolar alteration along the dermoepidermal junction in conjunction with a few scattered lymphocytes Acanthosis and hyperkeratosis in foci Late Scant infiltrate of lymphocytes and plasma cells around dermal venules Telangiectases in the…

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

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…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Overlap Syndromes?

…enoid discoid lupus erythematosus; the lichenoid infiltrate of lymphocytes, the jagged hyperplasia of the epidermis, and the hyperkeratosis merely resemble findings in lichen planus. In lichenoid discoid lupus erythematosus, in contrast to lichen…

An irregular pigmented lesion on the back

An irregular pigmented lesion on the back

…specimen was stained with hematoxylin-eosin. Histopathological examination showed a papillomatous epidermal hyperplasia with hyperkeratosis and cell nests in the dermoepidermal junction (Figure 3) and proliferation of atypical intraepidermal…

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…