meatus


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meatus

[mē′ād·əs]
(anatomy)
A natural opening or passage in the body.
References in periodicals archive ?
Although, as a rule, the hypospadiac meatus does not significantly obstruct the flow of urine, the stream may be deflected ventrally.
At the time of surgery the large, pneumatized structure in the middle meatus on the left nasal cavity was found to be the uncinate process (figure, C).
The caruncle measured 5 mm in diameter and was located at the posterior lip of the urethral meatus.
Hence in any patient with sinusitis the importance culture and sensitivity testing with sample obtained through aspiration of middle meatus secretion should be stressed upon.
Anatomic variations such as mucosal polyps that occur in the middle meatus or ethmoid infundibulum also can cause obstruction resulting in maxillary sinus disease.
On left side too DNS, pus in middle meatus (15%) and DNS alone (9%) or in combination with other findings were the most common findings.
The narrow isthmus through which sinus drains is called frontal recess which opens into the most superior portion of middle meatus.
Most reports in the literature about dilated internal auditory meatus refer to expansion secondary to an acoustic neuroma or other occupying lesion.
5) Briefly, a mucosal flap with the underlying bony wall facing the middle and/or inferior meatus is elevated from the cystic wall.
The main goals of this technique are to completely eradicate the disease, create a large enough meatus for examination and mastoid air cells, and provide a self-cleaning epithelized dry cavity, and achieve maximum hearing.
Background: Human papillomavirus (HPV)--induced lesions rarely develop in the urethral meatus (UM); however, their eradication can be problematic.
Chronic rhinosinusitis with nasal polyps (CRSwNP) is defined as presence of at least two of five symptoms (facial congestion, facial pain/ pressure/ fullness, nasal obstruction, purulent anterior/posterior nasal discharge and anosmia/hyposmia), inflammation (discolored mucosa, edema of middle meatus, or ethmoid area) documented by endoscopy and nasal polyps in middle meatus (documented by endoscopy or computed tomograms)4.