Search Results for: isthmic-catagen cyst

Differential Diagnosis in Dermatopathology

Differential Diagnosis

Infundibular cyst Isthmus-catagen cyst 1. Cyst lining consists of stratified squamous epithelium that resembles normal infundibular epidermis, i.e., the cells flatten as they mature; the granular zone persists 1. Cyst lining consists of stratified…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Telogen Effluvium—An Inflammatory Disease?

…ical knock-out is to an authentic knock-out in boxing. In telogen effluvium, the follicle is “knocked cold” into catagen and subsequently into telogen; in anagen effluvium, the follicle is sufficiently debilitated that it cannot continue…

Histologic Diagnosis of Inflammatory Skin Diseases

Telogen effluvium

…of common baldness. It may pose a problem in differentiation from normal scalp, not only because the number of follicles in catagen may be so few, but because, episodically, a single follicle in catagen may be seen in a section from a 4.0 mm…

Differential Diagnosis in Dermatopathology

Common baldness vs. Telogen effluvium

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…

Histologic Diagnosis of Inflammatory Skin Diseases

Applicable Terms

…osed parallel to the skin surface, as well as to one another. Laminated orthokeratosis is found, too, in a type of epidermal cyst, i.e., an infundibular cyst, and in a “pseudocyst,” i.e., an infundibular tunnel in a lesion of seborrheic…

Histologic Diagnosis of Inflammatory Skin Diseases

Alopecia areata, totalis, universalis

…icles, i.e., 5 or 6 in a particular section of a 4.0-mm biopsy specimen, are in anagen; only two or three, at most, being in catagen or telogen. In alopecia areata, in contrast, follicles are unaffiliated with trichomalacia and most of them are…