Search Results for: infundibular%20folliculitis

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Histologic Diagnosis of Inflammatory Skin Diseases

Applicable Terms

…eratosis 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 keratosis. Infundibular hyperkeratosis is the sine qua non for diagnosis of…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…, Demodex, Pityrosporum, or bacteria are found in a pustule, the inference may be made rightly that the process basically is infundibular. 10.37.11A: Pustular dermatitis, infundibular + 10.37.11B: Neutrophils in conjunction with degenerated collagen…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…ith numerous neutrophils and histiocytes, some of the latter multinucleate = Foreign body reaction to contents of a ruptured infundibular cyst An “infundibular cyst” is an epidermal cyst because the infundibulum is a component of the…

Histologic Diagnosis of Inflammatory Skin Diseases

"Folliculitis" (Infundibulitis)

…ive folliculitis, develops, irrespective of cause, as a consequence of emergence of neutrophils from capillaries in the peri-infundibular dermis, passage through the wall of the infundibulum, and entry into the infundibular canal. When the number of…

Histologic Diagnosis of Inflammatory Skin Diseases

Embryologic Development

…nation “folliculosebaceous-apocrine unit” is incorrect here because in an embryo, the apocrine unit derives from infundibular epidermis and the sebaceous unit from the junction of infundibular epidermis and follicle. That being so, the…

Histologic Diagnosis of Inflammatory Skin Diseases

Lichen planus

…terize conventional lichen planus are found in lichen planus that affects infundibula and follicles predominantly, i.e., the infundibular epidermis and the follicle in that circumstance are analogs of the surface epidermis, and the peri-infundibular

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