Related Experiment Video
Updated: Jul 28, 2026

07:43
Endoscopic Endonasal Trans-sphenoidal Approach: Minimally Invasive Surgery for Pituitary Adenomas
Published on: January 17, 2018
Dermoid cyst of the maxillary sinus
K R Torske1, G S Benson, G Warnock
1Department of Otolaryngic/Endocrine Pathology, Armed Forces Institute of Pathology, Washington, DC 20306-6000, USA.
Annals of Diagnostic Pathology
|July 4, 2001
Summary
Dermoid cysts, rare growths from ectodermal and mesodermal tissues, can occur in the head and neck. This study reports the first known case of a dermoid cyst within the maxillary sinus.
Area of Science:
- Developmental biology
- Pathology
- Otolaryngology
Background:
- Dermoid cysts are rare congenital teratomatous lesions.
- They originate from ectodermal and mesodermal tissues, containing skin adnexal structures.
- Their exact pathogenesis remains unclear.
Observation:
- Dermoid cysts commonly affect the head and neck region.
- Typical locations include the brow, nasal area, oral cavity, and neck.
- This report details a unique case of a dermoid cyst within the maxillary sinus.
Findings:
- The study presents the first documented instance of a dermoid cyst originating in the maxillary sinus.
- This finding expands the known anatomical distribution of these lesions.
- The case allows for a discussion on the potential pathogenesis in this unusual location.
Implications:
- Highlights the importance of considering dermoid cysts in the differential diagnosis of maxillary sinus masses.
- May prompt further research into the developmental pathways leading to ectopic teratomatous lesions.
- Contributes to a better understanding of rare head and neck pathologies.
Related Concept Videos
Overview of the Skull
The cranium (skull) is the skeletal structure of the head that supports the face and protects the brain. It is subdivided into the facial bones and the brain case, or cranial vault. The facial bones underlie the facial structures, form the nasal cavity, enclose the eyeballs, and support the teeth of the upper and lower jaws.
The cranial vault surrounds and protects the brain and houses the middle and inner ear structures. This cavity is bounded superiorly by the rounded top of the skull, which...
The cranial vault surrounds and protects the brain and houses the middle and inner ear structures. This cavity is bounded superiorly by the rounded top of the skull, which...
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...
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...
Olfactory Receptors: Location and Structure
The process of olfaction, also known as the sense of smell, is a sophisticated chemical response system. The specialized sensory neurons that facilitate this process, known as olfactory receptor neurons, are situated in an upper segment of the nasal cavity, known as the olfactory epithelium. Olfactory sensory neurons are bipolar, with their dendrites extending from the epithelium's apex into the mucus that lines the nasal cavity. Airborne molecules, when inhaled, traverse the olfactory...
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...
Anatomy of Respiratory System I: Upper Respiratory Tract
The upper respiratory tract plays a vital role in the respiratory system, comprising several structures that facilitate air intake and prepare air for the lungs. It also serves as the first line of defense against pathogens and particles. This tract includes the nose and nasal cavity, the oral cavity, the paranasal sinuses, and the pharynx, each with specific functions and features.
Nose and nasal cavity
The nose and nasal cavity represent the main external openings of the respiratory tract.
Nose and nasal cavity
The nose and nasal cavity represent the main external openings of the respiratory tract.
Cryptococcal Meningitis
Cryptococcal meningitis is a life-threatening opportunistic infection predominantly associated with HIV/AIDS, accounting for over 100,000 deaths annually worldwide. However, it also affects individuals with other forms of immunosuppression, including those undergoing immunosuppressive therapy, organ transplant recipients, patients with innate immunodeficiencies, and individuals with hematological disorders. The infection is caused mainly by Cryptococcus neoformans and Cryptococcus gattii,...

