Posterior epistaxis occurs from
Ans) a or CRef: Dhingra 5th ed p l90, 191There is a confusion regarding the formation of this question. In this question whether the commonest siteOR the commonest cause of the epistaxis is to be answered is not clear.If the commonest site is asked answer will be Woodruffs plexus and if the commonest cause is asked it will be atherosclerosis Littles area is situated in the anterior inferior part of nasal septum, just above the vestibule.Four arteries - anterior ethmoidal, septal branch of superior labial, septal branch of sphenopalatine and the grater palatine, anastomose here to form a vascular plexus called Kiesselbach's plexus. Anterior epistaxis mostly occurs from this site.Woodruffs area is situated under the posterior end of inferior tur-binate where the sphenopalatine artery anastomoses with the posterior pharyngeal artery. Posterior epistaxis may occur in this area
Woodruffs plexus
Kiesselbach's plexus
Atherosclerosis
Littles area
Nose and PNS