Resolving Quandaries in Dermatology, Pathology & Dermatopathology

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

“A normal mole is usually less than 5 millimeters (.25 inches) in diameter. Any mole that grows larger than that size may be cancerous.” http://www.faqs.org/health/Sick-V4/Skin-Cancer.html. Accessed November 29, 2006. “When a ty…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Papulosquamous Diseases?

“Papulosquamous eruptions A large group of common dermatoses present themselves primarily as a papule, with more or less scaling. The diagnosis of the members of this group of diseases is often apparent on simple inspection, or they may be d…

Histologic Diagnosis of Inflammatory Skin Diseases

Eccrine Units

The eccrine gland is the only true sweat gland in humans. Eccrine sweat is a hypotonic solution that flows from the gland to the surface of the skin where it cools the body by evaporation. Eccrine units are present nearly everywhere on human skin, i…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Eosinophilic Cellulitis (Wells’ Syndrome)?

“This is a study of the clinical features of four patients in the light of particular cutaneous histopathology. The characteristic eruption is periodic, tending to recur every few months, usually without systemic symptoms. The acute state of…

Histologic Diagnosis of Inflammatory Skin Diseases

Identification of Basic Patterns: Skin: Pustular Dermatitis

See Fig. 5.307 A&B. Figure 5.307 Pustular dermatitis. A. Infundibular. B. Surface epidermal. Although most pustules in skin are housed in infundibular epidermis (Fig. 5.308 A&B), many are lodged in surface epidermis (Fig. 5.309 A&B)….

Histologic Diagnosis of Inflammatory Skin Diseases

Lichen planus

Lichen planus Synonyms Lichen ruber planus Lichen ruber Presentation stereotypical Age and sex More common in women, especially young and middle-aged adults Distribution of lesions Flexor surface of forearms and wrists, but no site is exempt. Occu…