22. Pulmonary Path 4 Flashcards
Nose, nasopharyxn and the paranasal sinuses are all similarly lined by respiratory type eptihelium and subjected to the same environmental exposures. Normally they will have resp. epi (ciliated and goblet cells), mucous glands and what *** unique aggregates?
Lymphoid aggregates
Rhinitis and sinusitis= rhinosiniusitis is an inflammatory condition caused by infection or allergic route. Infectious can be d/t viral such as rhinovirus, coronavirus, adenovirus, echovirus and have a runny nose called?
CLEAR- rhinorrhea
If someone has bacterial rhinosinusitis (cold) it is usually due to a superimposed infection, meaning initially had a viral infection which gave opportunity to bacterial infection, usually what two?
S. pneumoniae
Haemophilus influenzae
Bacterial sinusistis will present with what type of secretions as opposed to viral which is clear?
thick purulent (green/yellow) nasal secretions
Allergic rhinosinutsitis is a type 1 HS reaction as seen with allergies to pollens, mold, danger and will see inflam infiltrate with eosinophils and what in the airwyas?
edema and rhinorrea
Chronic rhinitis/sinusitis via chronic viral or allergis sinusitis can lead to inflammatory?
sinonasal polyps
Infammatory sinonasal polyps has an epithelial lining that is not thickened, it is a swollen polyp allergic in nature showing esoinophilic infilatrates, and is basically edema in the?
stroma
Obstruction can occur with sinusitis leading to empyema which is a purulent exudate or can lead to what, which is a cyst lined with resp epithelium with mucus fluid?
Mucocele
The pathway of infection can enter the maxillary sinus by tracking along periapical tissues (from the oral flora up to the inf. maxillary sinus), advanced sinusitis can secondarily do what?
spread infection
Sinusitis in the ethmoid sinus (hugs the medial aspect of our face) can spread to septum as well as WHAT common area?
Periorbital region = cellulitis
Sinusitis in the frontal sinus usually or can extend posteriorly to the brain, causing brain abcess, subdural abscess, and more commonly?
meningitis
epidural abscess
Fungal sinusitis occurs as a results of HS to fungal organisms (aspergillus) that colonized in the sinus tract, histologically can see thick compact allergic mucus with eosinophils and their break down product (charcot leyden crystals) as well as? 2
fungal hyphae
and SOMETIMES mycetoma (fungal ball)
What is a aspergillus mycetoma?
a fungal ball of aspergillus hyphae
What is another type of fungal sinusitis which occurs in diabetics or IC patients, due to Zygomycosis (Mucor) leading to emergent situation requiring IV antifungal therapy to prevent extension into brain or SEPSIS?
Acute invasive sinusitis **worst type
can involve orbit and brain=poor prognosis
What is sen in middle aged adults and can affect nasal passages and sinuses causing ulceration, necrosis, perforation of the septum-usually first time the disease is recognized in the nose?
granulomatosis with polyangitis (GPA) or Wegener granulomatosis
Granulomatosis with polyangitis can also affect the lungs and kidneys and histologically can see granulomatous inflammation with vasculitis with what classic phenomon seen on bx which is due to vaporized nuclei?
Necrobiotic necrosis
What benign tumor of the nasopharynx is a polypoid mass that occurs in young men which may recur and bleed and histologically has vascular fibrous core lined by benign epithelium?
Nasopharyngeal angiofibroma (looks like PP tissue)
Nasopharyngeal angiofibroma is highly associated with what familial disease, and is usually the first appearance of the dz?
Familial adenomatous polyposis FAP
Familial adenomatous polyposis FAP caused by a mutation in the APC gene, usually inherited- numerous colon polyps develop in childhood and adolescence, with invariable progression to?
invasive carcinoma by their 50s
*nasal polyp can be first sign of APC/FAP
What benign tumor occurs in middle aged men>women and has 3 types, exophytic, endophytic (10% become malignant) and oncocytic?
Sinonasal “Schneiderian” papilloma
What malignant tumor is denoted as small round blue cell tumor arising from neuroectoderm in the superior nasal passage with a bimodal distribution occuring in adolescence and middle age?
Olfactory neuroblastoma
Olfactory neuroblastoma is in the superior nasal passage, so sometimes it will penetrate (since malignant) the cribriform plate, forming what characteristic shaped tumor?
dumbbell shaped tumor
What malignant tumor is essentially squamous carcinoma, but has a keratinizing and nonkeratinizing form, as well as basophilic lymphoid tissue (formerly lymphoepithelioma)?
Nasopharyngeal carcinoma
Nasopharyngeal carcinoma arises in the nasopharynx but the majority of cases present in the neck as?
cervical LN metastasis b/c the actually lesion is usually much smaller than the metastasis
Nasopharyngeal carcinoma may be hereditary, and due to age and EBV, seen in chinese/southeast asian adults (smoked fish ingestion) or young EBV related african children. What two commonalities is see on histo?
nonkeratinizing SCC
POSITIVE for EBER-1 (in situ hydridization)
what is another EBV related tumor increased incidence in asia and latin american at any age but peaks in middle age, and can cause necrotic destruction of paranasal sinuses?
Extranodal NK/T cell lymphoma
Extranodal NK/T cell lymphoma has systemic signs including fever, night sweats, and weight loss, however the prognosis depends on?
stage and symptoms
**biopsy showing necrosis **also EBER +
The three squamous lesions of the larynx include cancer on vocal cord, papilloma and?
singers node