2022年7月4日 · The persistent stapedial artery (PSA) is an abnormal small vessel arising from the petrous portion of the internal carotid artery and crossing through the middle ear. It results from the failure of regression of the embryonic stapedial artery. The prevalence is thought to range from 0.02 to 0.48% in the population.

A persistent stapedial artery (PSA) is a rare anomaly in human anatomy where the stapedial branch of posterior auricular artery, or simply stapedial artery, remains within the ear of a fetus after the first ten weeks of pregnancy.

2000年3月1日 · Summary: The persistent stapedial artery is a rare congenital vascular anomaly that may present as a pulsatile middle ear mass or that may appear as an incidental finding. Five cases of persistent stapedial artery are presented.

Persistent stapedial artery is a vascular anomaly with both clinical and surgical implications. Because of its scarcity, however, it remains underrecognized on imaging. Presented here is a series of 10 cases, demonstrating characteristic CT findings ...

A persistent stapedial artery (PSA) is a rare vascular anomaly with a prevalence calculated to be 0.48% in a histopathologic study of 1000 temporal bones . The PSA can occur as an isolated anomaly or in association with an aberrant carotid artery.

Persistent Stapedial Artery. In the same way the inferior tympanic-carotidotympanic connection results in ascending pharyngeal reconstitution of the petrous carotid artery, a persistent inferior tympanic can maintain an embryonic connection to the middle meningeal artery via the petrous branch of the MMA that makes us the facial nerve arcade.

The stapedial artery is an embryological vessel arising from the primitive second aortic arch that divides into a dorsal branch (the future middle meningeal artery) and a ventral division (future maxillary and mandibular arteries).

Summary: The persistent stapedial artery is a rare con-genital vascular anomaly that may present as a pulsatile middle ear mass or that may appear as an incidental find-ing. Five cases of persistent stapedial artery are presented. The CT findings include the absence of the ipsilateral fo-ramen spinosum and a soft-tissue prominence in the region

2013年5月3日 · Embryologic studies explain the four types of persistent stapedial arteries: the hyoido-stapedial artery, the pharyngo-stapedial artery, the pharyngo-hyo-stapedial artery and aberrant internal carotid with persistent stapedial artery. Phylogenetic studies show that the stapedial artery persists in adulthood in many vertebrates.

The persistent stapedial artery is a rare congenital vascular anomaly that may present as a pulsatile middle ear mass or that may appear as an incidental finding. Five cases of persistent stapedial artery are presented. The CT findings include the absence of the ipsilateral foramen spinosum and a so …