A Clinical Atlas of 101 Common Skin Diseases

Nevus Sebaceus

A hamartoma of epidermis, epithelial structures of adnexa, and presumably dermal elements, typified, when fully formed, by a papillated or verrucous yellowish plaque situated usually on the scalp. The condition may present itself as a solitary lesio…

A Clinical Atlas of 101 Common Skin Diseases

Rosacea

A papular and pustular inflammatory process that is centered in follicles and is distributed mostly in the middle third of the face in both vertical and horizontal directions. Among the varied manifestations of rosacea are innumerable telangiectases…

Therapeutic Strategies in Dermatology

Acne Vulgaris: Treatment

Treatment Mild to moderate acne First-line therapy (comedonal acne only): topical retinoid First-line therapy (mild inflammatory acne): topical retinoid alone, topical retinoid + topical antimicrobial Topical retinoids are considered first…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Eruptive Vellus Hair Cyst?

…. Arch Dermatol 1987;123:299-301. “Eruptive vellus hair cysts are uncommon developmental anomalies of vellus hair follicles that are observed in young patients.” Kaya TI, Tataroglu C, Tursen U, et al. Eruptive vellus hair cysts: an effe…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Epidermal Cyst and Epidermoid Cyst?

…ion published in 1990, Walter Lever considered wens, sebaceous cysts, milia, and dermoid cysts to be “cysts of the epidermis.” In reality, nearly all primary cysts in skin are related to adnexal epithelium, not epidermis, the exception be…

Differential Diagnosis in Dermatopathology

Infundibular cyst vs. Isthmus-catagen cyst

A papular and pustular inflammatory process that is centered in follicles and is distributed mostly in the middle third of the face in both vertical and horizontal directions. Among the varied manifestations of rosacea are innumerable telangiectases…

Differential Diagnosis in Dermatopathology

Discussions

These two common cutaneous cysts have several features in common, namely, lining of stratified squamous epithelium and cornified cells in their cavity. We name cysts according to the normal epithelial structure of skin that the lining of the cyst re…

Differential Diagnosis in Dermatopathology

Trichoadenoma vs. Microcystic adnexal carcinoma

A papular and pustular inflammatory process that is centered in follicles and is distributed mostly in the middle third of the face in both vertical and horizontal directions. Among the varied manifestations of rosacea are innumerable telangiectases…

Differential Diagnosis in Dermatopathology

Differential Diagnosis

…hickness from cyst to cyst and even in the same cyst 8. Some cysts may be lined by sebaceous ductal epithelium 8. No cysts are lined by sebaceous ductal epithelium 9. No tubular structures 9. Tubular structures contain homogeneous eosinophilic ma…