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Nose and Nasal Cavity

Nose and Nasal Cavity

The nose is composed of an observable exterior segment (external nose) and an internal segment within the skull known as the nasal cavity (internal nose). The external nose, visible on the face, consists of a framework of bone and hyaline cartilage enveloped in skin and muscle and lined with a mucous membrane. This structure is supported by the frontal bone, nasal bones, and maxillary bone and is supplemented by a cartilaginous framework comprising the septal nasal cartilage, lateral nasal...

Cranial Bones: Lateral View

Cranial Bones: Lateral View

The lateral view of the cranium is dominated by temporal, sphenoid, and ethmoid bones.
The temporal bone forms the lower lateral side of the skull. The temporal bone is subdivided into several regions. The flattened upper portion is the squamous portion of the temporal bone. Below this area and projecting anteriorly is the zygomatic process of the temporal bone, which forms the posterior portion of the zygomatic arch. Posteriorly is the mastoid portion of the temporal bone. Projecting...

Papillary Dermis

Papillary Dermis

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.
Papillary Layer
The papillary layer is made of loose, areolar connective tissue, which means the collagen and...

Epistaxis

Epistaxis

Epistaxis, or nosebleeds, occurs when small, swollen blood vessels in the nasal mucous membrane rupture. Typically, the anterior septum is the primary site of occurrence.
Etiology
Possible causes of this condition include high blood pressure, trauma, low humidity, upper respiratory tract infections, allergies, foreign bodies, nasal inhalation of corticosteroids or illicit drugs, excessive use of decongestant nasal sprays, facial or nasal surgery, anatomic malformation, tumors, or systemic...

Reticular Dermis

Reticular Dermis

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.
Reticular Layer
Underlying the papillary layer is the much thicker reticular layer, composed of dense, irregular connective...

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Updated: May 17, 2026

Dermoscopy Aids in the Diagnosis of Discoid Lupus Erythematosus

Dermoscopy Aids in the Diagnosis of Discoid Lupus Erythematosus

Published on: May 16, 2025

Nasal dermoids - our experience.

J P Dabholkar¹, S D Souza, D K Irani

¹B.Y.L. Nair Charitable Hospital Trust, 400 008 Bombay.

Indian Journal of Otolaryngology and Head and Neck Surgery : Official Publication of the Association of Otolaryngologists of India

|November 3, 2012

Summary

This summary is machine-generated.

Nasal dermoid cysts and fistulas are rare congenital defects. Improved awareness of their complex nature is crucial to prevent misdiagnosis and incomplete surgical removal, ensuring better patient outcomes.

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Area of Science:

Embryology
Otolaryngology
Plastic Surgery

Background:

Nasal dermoid cysts and fistulas are uncommon congenital anomalies arising from embryological errors.
Misdiagnosis and recurrence highlight a lack of awareness regarding the complex nature of these lesions.
Incomplete excision, often due to underestimation of the lesion's extent, leads to 'misadventures'.

Purpose of the Study:

To present clinical experience with nasal dermoid cysts and fistulas.
To detail the presentation and management strategies for these congenital nasal anomalies.
To emphasize the importance of comprehensive understanding for effective treatment.

Main Methods:

Retrospective case series analysis.
Review of clinical presentations, diagnostic methods, and surgical interventions.
Evaluation of patient outcomes and recurrence rates.

Main Results:

Detailed analysis of the clinical spectrum of nasal dermoid cysts and fistulas.
Documentation of common diagnostic challenges and pitfalls.
Outcomes of various surgical management approaches, including recurrence data.

Conclusions:

Nasal dermoid cysts and fistulas require thorough diagnostic evaluation.
Complete surgical excision is essential to prevent recurrence.
Enhanced awareness and understanding of these embryological errors are vital for optimal patient management.