40. Diseases of the Nose Flashcards
bony nose on the nasal ridge, the rest is cartilage, some fatty tissue
relevant anatomy
inferior turbinate which is what you can see, middle turbinate, superior turbinate
internal structures of the nose
internal carotid > opthalmic artery > anterior ethmoidal artery and posterior ethmoidal artery
blood supply to the lateral wall
external carotid > maxillary artery > greater palatine artery, lesser palatine artery, and sphenopalatine artery > branches of sphenopalatine artery
blood supply to the lateral wall
facial artery > branches of the facial artery
blood supply to the lateral wall
very similar to lateral wall supply, kiesselbach’s plexus bracnes of the internal and external carotid
blood supply to the septum
upper part of nose/face drains via angular vein intracranially to the cavernous sinus, also drainage via fiacial to jugular vein
venous drainage of the nose
upper lip, philtrum, and nose, contains cavernous sinus, oculomotor nerve, trochlear nerve, opthalmic nerve, abducent nerve, maxillary nerve, internal carotid artery, sella turcia, sphenoid sinus, sphenoid bone, nasopharynx, pituitRY GLAND, optic chiasm
danger triangle
primarily respiratory epithelium, specialized olfactory area, some squamous epithelium at the nares
nasal mucosa
increased secretions, nasal obstruction, bleeding, foul odor, pain, altered sense of smell
symptoms of nasal pathology
nasal speculum opens up and down, or nasal endoscopy but needs topical anesthetic, can visualize nasopharynx
examination of the nose
palpate all the facial bones so you know it is isolated, no imaging if tender only at the nasal bridge, the nose is aligned, the nareas are patent, and there is no septal hematoma, management of most nasal fraftures is deferred until swelling resolves, for extensive facial trauma CT is the preferred imaging modality
isolated nasal trauma
can compress the septum and cause necrosis, can become infected, drainage followed by packing, with ENT follow up, remember image
septal hematoma
common complaint, usually not a sign of systemic disease, common causes include trauma, nosepicking, dry mucosa due to dry winters, allergies, less common causes include coagulopathy, thrombocytopenia, and cancer
epistaxis
not common 1:150,000 people is about 50/year in the US, primarily adolescent males, can present with massive epistaxis or mass effect, benign but grows aggressively
juvenile nasopharyngeal angiofibroma