Search Results for: infundibulo-sebaceous-apocrine unit

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Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Epidermal Cyst and Epidermoid Cyst?

…ermis. The epithelium that lines virtually all other cutaneous cysts is like that of adnexal epithelium, namely, follicular, sebaceous, and apocrine. For that reason, we name cutaneous cysts according to the normal epithelial structure of adnexa…

Differential Diagnosis in Dermatopathology

Discussions

…n besides their fundamental nature cystic hamartomatous. For example, both are composed of elements of infundibulo-folliculo-sebaceous units and both are associated with sebaceous lobules. Cornified cells are present in the cystic contents of both…

Differential Diagnosis in Dermatopathology

Discussions

…follicular, and sebaceous differentiation, a finding that is not surprising when one considers the unity of the infundibuloapocrinesebaceous-follicular unit and its derivation from a germ that appears beneath surface ectoderm at about the tenth…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Breast a Sweat Gland?

…rine ducts, but the breast per se is not an apocrine gland, modified or otherwise. No one refers to the axilla as a modified apocrine gland. Apocrine glands at that site and those in the external auditory canal (“ceruminous glands”)…

Differential Diagnosis in Dermatopathology

Discussions

…ceous glands but the former, as the name denotes, is a hyperplasia, whereas the latter is a hamartoma that involves not only sebaceous units, but other adnexal epithelial structures, the epidermis, the dermis, and the subcutaneous fat. The lesion…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Eruptive Vellus Hair Cyst?

…undibulum, and the contents of the cyst, instead of being mostly lipid are corneocytes. A sebaceous duct normally enters the infundibulofollicular unit at the junction of infundibular epidermis and the isthmus of a follicle. In classic…

Differential Diagnosis in Dermatopathology

Discussions

…h findings likely are eccrine in nature. But, in the ultimate analysis, it simply may be impossible to determine if a particular poroid hidradenoma is eccrine or apocrine. In contrast, all pale-cell/clear-cell hidradenomas are apocrine. Search…

Histologic Diagnosis of Inflammatory Skin Diseases

Eccrine Units

…les, axillae, and forehead. Embryologically, eccrine units derive from surface ectodermis, arising independent of infundibuloapocrinesebaceous-follicular units and descending to near the junction between the dermis and the subcutaneous fat. Some…

Ocular Inflammation

Ocular Inflammation

…ly the Meibomian glands are considered to be unassociated with hair follicles, they must derive from a infundibulo-folliculo-apocrinesebaceous germ jus as any other sebaceous gland because in one pathologic condition, so-called distichiasis, small…

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