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Related Concept Videos

Accessory Structures of the Skin: Sebaceous Glands01:21

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A sebaceous gland is a type of oil gland found almost all over the skin ( except palms and soles) and helps lubricate and waterproof the skin and hair. Most sebaceous glands are associated with hair follicles. They generate and excrete sebum, a mixture of lipids, onto the skin surface, thereby naturally lubricating the dry and dead layer of keratinized cells of the stratum corneum, keeping it pliable.
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Auditory sensation, commonly called hearing, involves the transformation of sonic waves into neural impulses facilitated by the structures of the auditory organ. The prominent, flesh-like structure on the side of the head, called the auricle, directs sound waves towards the auditory canal. The auricle is often mislabeled as the pinna, a term more aligned with mobile structures like a feline's external ear. The auditory canal penetrates the cranium via the external auditory meatus of the...
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Dermis
The dermis might be considered the "core" of the integumentary system, as distinct from the epidermis and hypodermis. It contains blood and lymph vessels, nerves, and other structures, such as hair follicles and sweat glands. The dermis is made of two layers of connective tissue that comprise an interconnected mesh of elastin and collagenous fibers, produced by fibroblasts.
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Accessory Structures of the Skin: Hair Growth and Types01:20

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Hair growth begins with the production of keratinocytes by the basal cells of the hair bulb. As new cells are deposited at the hair bulb, the hair shaft is pushed through the follicle toward the surface. Keratinization is completed as the cells are pushed to the skin surface to form the shaft of hair that is externally visible. The external hair is completely dead and composed entirely of keratin. Hair can be cut or shaven without damaging the hair structure because the cut is superficial. Most...
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The blood drainage from the head and neck is primarily managed by three pairs of veins: the external jugular, internal jugular, and vertebral veins. The external jugular veins drain superficial scalp and face structures, passing over the sternocleidomastoid muscles to empty into the subclavian veins.
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Reticular Dermis01:15

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The papillary and reticular dermis are the two layers of the dermis. They are made of connective tissue with fibers of collagen extending from one to the other, making the border between the two somewhat indistinct. The dermal papillae extending into the epidermis belong to the papillary layer, whereas the dense collagen fiber bundles below belong to the reticular layer.
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Sebaceous Hyperplasia Mimicking Linear Wart over Ear.

Pragya A Nair1, Nilofar G Diwan1

  • 1Department of Dermatology and Venereology, Pramukshwami Medical College, Karamsad, Gujarat, India.

International Journal of Trichology
|February 24, 2016
PubMed
Summary

Sebaceous hyperplasia (SH) is a common benign skin condition. A rare case presented as a wart-like lesion on the ear, highlighting diagnostic considerations for this condition.

Keywords:
Pilosebaceous glandsebaceous hyperplasiaverrucous

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Area of Science:

  • Dermatology
  • Pathology

Background:

  • Sebaceous hyperplasia (SH) is a frequent, benign condition affecting sebaceous glands, typically on the face.
  • Lesions are generally asymptomatic, soft, discrete, yellow, and can have a smooth to verrucous surface.
  • The exact cause of SH remains unclear, and while treatment is not medically required, cosmetic concerns often lead to removal.

Observation:

  • A case study involving a 23-year-old male.
  • The patient presented with a linear, hyperkeratotic plaque on the right ear.
  • The lesion appeared skin-colored to hyperpigmented and mimicked a wart.

Findings:

  • The presented lesion, despite its atypical appearance and location, was diagnosed as Sebaceous Hyperplasia (SH).
  • This case underscores the varied clinical presentations of SH.
  • Diagnostic challenges can arise when SH mimics other dermatological conditions like warts.

Implications:

  • This case expands the understanding of Sebaceous Hyperplasia's clinical spectrum.
  • Highlights the importance of considering SH in the differential diagnosis of wart-like lesions.
  • Suggests that unusual presentations of SH may require careful histopathological examination for accurate diagnosis.