Items tagged “paranasal sinuses”
45 results found
Article
Convoluted cerebriform pattern
A convoluted cerebriform pattern is a term used to denote the appearance of a sinonasal inverted papilloma on MRI. The appearance is seen on both T2 and post contrast T1 images and appears as alternating roughly parallel lines of high and low signal intensity.
This sign has been reported as pre...
Case
Mucous retention cyst
Published
14 Jul 2010
62% complete
MRI
Case
Pneumatized crista galli
Published
18 Jun 2011
59% complete
CT
Case
Onodi cells
Published
18 Jun 2011
95% complete
CT
Case
Agger nasi cell
Published
18 Jun 2011
77% complete
CT
Case
Agger nasi cell with sinusitis
Published
18 Jun 2011
77% complete
CT
Case
Squamous cell carcinoma of the paranasal sinus
Published
18 Jun 2011
92% complete
CT
Case
Inverted papilloma with secondary sinusitis
Published
31 Dec 2012
59% complete
CT
Case
Paranasal sinus osteoma
Published
28 Apr 2013
56% complete
CT
Case
Odontogenic maxillary sinusitis
Published
22 Nov 2013
95% complete
Annotated image
CT
Article
Sinonasal polyposis
Sinonasal polyposis refers to the presence of multiple benign polyps in the nasal cavity and paranasal sinuses.
Epidemiology
Sinonasal polyposis is most commonly encountered in adults and rare in children. Polyps are the most common expansile lesions of the nasal cavity 8.
Associations
Condi...
Case
Aggressive fungal sinusitis
Published
08 Jul 2016
77% complete
CT
Article
Sphenoethmoidal recess
The sphenoethmoidal recess drains the posterior ethmoid air cells and sphenoid sinuses into the superior meatus of the nasal cavity.
Related pathology
patterns of sinonasal obstruction
Article
Schneiderian epithelium
Schneiderian epithelium/membrane is the unique lining of the nasal cavity and paranasal sinuses, and is an ectodermally derived ciliated columnar epithelium with goblet cells. It differs from the similarly appearing respiratory epithelium, which is endodermally derived.
History and etymology
...
Case
CSF fistula
Published
28 Jul 2017
74% complete
MRI
CT
Case
Mucocele - frontoethmoidal
Published
11 Dec 2018
80% complete
MRI
Article
Anterior ethmoidal notch
The anterior ethmoidal notch contains the anterior ethmoidal artery and has significant rates of anatomic variation that is seen during functional endoscopic sinus surgery (FESS).
Gross anatomy
The anterior ethmoidal notch lies in the medial wall of the superomedial orbit, adjacent to the ante...
Case
Craniofacial fibrous dysplasia
Published
27 Dec 2019
77% complete
CT
Article
Frontal mucocele
A frontal mucocele is a paranasal sinus mucocele in a frontal sinus and is the most common location of all the paranasal sinus mucoceles 1.
Clinical presentation
Mucocoeles in the frontal sinus may be asymptomatic with insidious onset or present with headaches 2 and facial pain. Forehead (supr...
Article
Frontoethmoidal mucocele
A frontoethmoidal mucocele is a paranasal sinus cyst-like lesion (mucocele) lined with respiratory mucosa. The frontal and frontoethmoidal regions are reportedly the most common locations for paranasal sinus mucocele formation 1. They are thought to arise from obstruction of normal sinus drainag...
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