Search Results for: isthmic-catagen cyst

Differential Diagnosis in Dermatopathology

Dilated pore vs. Pilar sheath acanthoma

An inflammatory process that develops secondary to trauma, usually in the form of a penetrating injury or rupture of a follicle, and that proceeds through stages of granulation tissue with numerous extravasated erythrocytes, granulomatous…

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

An inflammatory process that develops secondary to trauma, usually in the form of a penetrating injury or rupture of a follicle, and that proceeds through stages of granulation tissue with numerous extravasated erythrocytes, granulomatous…

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…