Search Results for: infundibulum

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…eing localized permanent alopecia. 10.22.16A: Pustular dermatitis, infundibular + 10.22.16B: Hyphae in cornified cells of an infundibulum and a hair = Dermatophytosis This, the suppurative stage of Majocchi’s granuloma, comes into being as a…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Pityrosporum Folliculitis and Demodectic Folliculitis?

…the follicle is formed of an isthmus, a stem, and a bulb. Histopathologists must disabuse themselves of the notion that the infundibulum is part of the follicle when, in actuality, it is epidermis in continuity with the follicle. The infiltrates of…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…nalogous to atrophic lichen planus 10.60.15A: Peri-infundibulitis, fibrosing + 10.60.15B: Wedge-shaped hypergranulosis in an infundibulum = Lichen planopilaris The near absence of follicles from a section of a specimen taken from the scalp signifies…

Histologic Diagnosis of Inflammatory Skin Diseases

Pyoderma gangrenosum

…on clinicopathologic The initial pustule represents suppurative infundibulitis. At first, neutrophils are found mostly in an infundibulum; in time, they are present mostly around the involved infundibulum, and still later, the original infundibular…

Histologic Diagnosis of Inflammatory Skin Diseases

Applicable Terms

…(to which should be added a fourth analogue, i.e., acne keloidalis). A sinus forms as a result of re-epithelialization of an infundibulum as it attempts to restore itself to its original state after having burst and ejected its contents, mostly of…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…fibrosing inflammation, the latter two shown here. 11.10.3A: Peri-infundibulitis, fibrosing + 11.10.3B: Fibrosis beneath an infundibulum dilated markedly by a plug of corneocytes = Keratosis pilaris Because the infundibulum has become thinned as a…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Apocrine Miliaria?

…dyce disease seems to be plugging of infundibula by corneocytes; spongiosis at the site of entry of an apocrine duct into an infundibulum is a phenomenon secondary, i.e., consequent to an infundibulum blocked by cornified cells. In brief, the…

Histologic Diagnosis of Inflammatory Skin Diseases

Apocrine Units

…a manner similar to that of the eccrine duct through surface epidermis (Fig. 1.54). Figure 1.54 An apocrine duct enters the infundibulum of an epidermis above the entry of a sebaceous duct, which is at the junction of infundibulum and isthmus. The…