Exam 2- Upper airway, nasal, sinuses, neck & ear Flashcards
what are 3 pathologies that can occur in the neck?
- brachial cyst
- thyroglossal cyst
- paraganglioma (carotid body tumor)
what are 2 types of cyst and a rare tumor we care about?
- inflammatory cyst (radicular most common)
- developmental cysts (dentigerous most common developmental cyst & surgical specimen)
- malignant tumors of odontogenic origin (rare)
what are the two etiologies of cysts? where do they come from?
-developmental (abnormal development)
-inflammatory
both arise from remnants of odontogenic epithelium
what can a dentigerous cyst give rise to?
ameloblastoma (malignant)
what are the “tumors” of the nose/sinus/nasopharynx?
- polyps (not really a tumor, VAST MAJORITY)
- angiofibroma
- papilloma
- plasmacytoma
- neuroblastoma
- nasopharyngeal carcinoma
what causes rhinitis and sinusitis?
- very often allergic (swab & find eosinophils) or URI (viral in general)
- any organism can cause it though
what causes allergic rhinitis? what Ig? sxs?
- sensitivity rxns
- plants, pollens, fungi, animal allergens & dust mites
- IgE mediated/type I hypersensitivity
- mucosal edema, redness, thick mucus secretions and pale turbinates
- leukocytic infiltration (eosinophils)
what causes infectious rhinitis? sxs? what can ensue? where can it go to?
- usu viral: adenoviruses, echoviruses & rhinoviruses
- acute: edematous, thickened nasal mucosa, enlarged turbinates & narrowed nasal cavities
- secondary bacterial infxn can ensue
- changes may extend into pharynx producing concomitant pharyngotonsilitis
what causes chronic rhinitis? what immune cells are present?
- repeated acute rhinitis: allergic or infectious followed by secondary or superimposed microbial infxn
- inflammatory infiltrates with PMNs, plasma cells & lymphocytes
what can predispose one to chronic rhinitis? causes?
- deviated nasal septum or nasal polyps predispose
- recurrent rhinitis or spontaneously occur
what are nasal polyps?
-edematous mucous w/loose stroma often w/cystic or hyperplastic mucous glands
what should be ruled out in a young caucasian with large polyps?
cystic fibrosis
are most pts with polyps atopic?
no most with polyps are not atopic, though there is allergic etiology it is not atopically associated
what is Samter triad or ASA triad?
aspirin intolerance + bronchial asthma + ethmoid polypi
*salicylates can provoke life-threatening status asthmaticus in these pts
what usu causes infectious sinusitis?
viruses! but can be bac or fungal too and sometimes an extension of periapical dental infxn
complete obstruction of sinuses can lead to what?
empyema or if w/o infxn can lead to mucocele
what are the 3 categories sinusitis can be subdivided into?
- acute: sxs <4 wks
- subacute: sxs 4-12 wks in duration
- chronic: sxs present for 12 or more wks