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Preauricular sinuses and preauricular cysts are two common congenital malformations. Each involves the external ear. The difference between them is that a cyst does not connect with the skin, but a sinus does. [3] Frequency of preauricular sinus differs depending the population: 0.1–0.9% in the US, 0.9% in the UK, and 4–10% in Asia and ...
Business Insider reports that "between .1% and .9% of the European and U.S. population are born with preauricular sinus." Show comments. Advertisement. Advertisement. In Other News.
Acrocraniofacial dysostosis. Acrocraniofacial dysostosis, also known as Kaplan Plauchu Fitch syndrome is a very rare hereditary disorder which is characterized by cranio-facial dysmorphisms, hearing loss, digital clubbing, and osseous anomalies. [1] Only 2 cases have been described in medical literature. [2]
Here are links to possibly useful sources of information about Preauricular sinus and cyst. PubMed provides review articles from the past five years (limit to free review articles) The TRIP database provides clinical publications about evidence-based medicine. Other potential sources include: Centre for Reviews and Dissemination and CDC
Sinus pericranii is a venous anomaly where communication between the intracranial dural sinuses and dilated epicranial venous structures exists. That venous anomaly is a collection of non-muscular venous blood vessels adhering tightly to the skull's outer surface and directly communicating with intracranial venous sinuses through diploic veins ...
The nasopalatine duct cyst ( NPDC) occurs in the median of the palate, usually anterior to first molars. It often appears between the roots of the maxillary central incisors. Radiographically, it may often appear as a heart-shaped radiolucency. It is usually asymptomatic, but may sometimes produce an elevation in the anterior portion of the palate.
In dinosaurs. The parietal bone is usually present in the posterior end of the skull and is near the midline. This bone is part of the skull roof, which is a set of bones that cover the brain, eyes and nostrils. The parietal bones make contact with several other bones in the skull. The anterior part of the bone articulates with the frontal bone ...
Congenital dermal sinus. The schematic representation of a dermal tract as a predisposing factor for intramedullary spinal cord abscesses. [1] Congenital dermal sinus is an uncommon form of cranial or spinal dysraphism. [2] [3] It occurs in 1 in 2500 live births. [3] It occurs as a dermal indentation, found along the midline of the neuraxis and ...
Odontogenic sinusitis. Odontogenic sinusitis is a type of sinusitis (inflammation of the sinuses ), specifically caused by dental infections or procedures. [1] Comprising approximately 10-12% of all chronic sinusitis cases, this condition primarily affects the maxillary sinus, which is in close proximity to the upper teeth. [2]
A cutaneous sinus of dental origin is where a dental infection drains onto the surface of the skin of the face or neck. This is uncommon as usually dental infections drain into the mouth, typically forming a parulis ("gumboil"). Cutaneous sinuses of dental origin tend to occur under the chin or mandible. Without elimination of the source of the ...