Create
Learn
Share

Radiojunsum11

rename
robbypowell's version from 2016-07-25 21:07

sinus

Question Answer
how far away is the source from the subject when taking a lat ceph?5 ft away
what is the gold standard technique for examining the paranasal sinuses?CBCT
what is the landmark for finding the posterior border of the maxillary sinus?Pterygomaxillary fissure
what is the type of tissues that line sinuses...pseudo stratified columnar w/ goblet cells
potency of each ______ is required for normal sinus functionOstia (openings of sinuses into nasal cavity)
mucosal lining of paranasal sinuses is normally ____ mm thick1mm
t/f: normal sinus mucosa can be seen on radiographsfalse
t/f: only abnormal sinus mucosa can be seen on radiographstrue
Non-corticated radiopaque band paralleling sinus wall indicates... what?Sinusitis... specifically mucositis
sinusitis is acute when it lasts < ____ weeks12 weeks
sinusitis is chronic when it lasts ____ weeks or longer12 weeks
recurrent sinusitis is when you have ____ or more episodes of acute sinusitis within a year3
which has more subtle symptoms and less pain associated acute or chronic sinusitis?chronic (more likely to see radiographic evidence though)(acute has more pain)
which sinus refers to the forehead area?Frontal sinus
which sinus refers to the infraorbital rim?maxillary sinus
which sinus refers to back or top of the head?sphenoid sinus
what is the Most common of the sinus conditions that cause pain (and is also known for referring pain to teeth)Acute Maxillary Sinusitis
acute sinusitis cases are mostly cause by upper respiratory infections of what type?Viral (they then contract subsequent bacterial sinus infection?)
suspect what sinus condition when URI persists beyond 10 days and/or show worsening after initial improvement?acute bacterial rhino sinusitis (Acute sinusitis)
reduced lumen size is a sign of (acute/chronic) sinusitis?Chronic
Acute sinusitis is most common in the ____ and _____ sinusesMaxillary and Ethmoid
____% of chronic sinusitis is due to odontogenic infection10%
fungal infections causing chronic sinusitis are more common in what two regions of the country?soutthwest and southeast
>____% of chronic sinusitis patients have it caused by allergies50%
polypoid/lobulated mucosal thickening and symmetric disease are suggestive of ____ origin of chronic sinusitisAllergy
Outline of thickened mucosa is more uniform and smoother in contour in chronic sinusitis caused by _______infection
new bone formation appearing as thin radiopaque “halo” bulging into sinus adjacent to apex of tooth... is called ____ ____Periodical Osteitis (odontogenic origin)
fungal sinus infection mostly are (acute/chronic)Chronic?
Mycetoma typically affects which sinus?Maxillary
Focal mass within sinus with central areas of high density (increase radiopacity)± calcification, most commonly in the maxillary sinus and least commonly in ethmoidMycetoma
Severe form of chronic rhino sinusitis, represents an IgE-mediated hypersensitivity to fungal antigensAllergic Fungal sinusitis
Allergic Fungal Sinusitis is caused by a hypersensitivity reaction mitigated by which Ig?IgE
What type of sinusitis is associated with immunocompromised patients?Invasive Fungal Sinusitis
T/F: Hypoplasia of sinuses can be caused by sinusitis in childhoodtrue
with Sinus Hypoplasia the sinuses will appear more (radiolucent/radiopaque) than normalradiopaque (b/c more bone thickness of bone around them)
Thalassemia, Goldenhar syndrome, Treacher Collins, Cleidocranial dysplasia and Fetal alcohol syndrome area all associated with Sinus _____-plasiaHYPOPLASIA
term for when when maxillary sinus now extend to position below the nasal floor and nearer the midlinePalatal Recess
what is the most common type of maxillary recess?Alveolar (extension into the alveolar ridge)
T/F: You can tell from pan or PA whether roots are protruding into sinusFalse (2d can't tell)
T/F: You can't tell from pan or PA whether roots are protruding into sinusTrue (2d imaging, can't tell)
T/F: There is almost always lamina dura around the tips of the roots, except in cases of diseaseTrue
An opening into the maxillary sinus from an extracted maxillary molar is called _____ _____Oroantral Fistula
Root of which tooth is most commonly displaced into the maxillary sinus (maybe when extracted?? it wasn't clear)Max 1st molar
The presence of sinus ______ can complicate sinus lift proceduresSepta (partitioning by bone)
asymptomatic dome-shaped radiopacity that arises from the floor of the maxillary sinusRetention Pseudocyst (mucous retention cyst) (has like 2 other names with pseudocyst in name)
What is the treatment for Retention Pseudocyst?No treatment. (no effect on surrounding structures)
opacified mucous containing expanded sinus secondary to blocked major ostiumMucocele
an infected mucocele is called a _______mucopyocele (or pyocele)
What is the treatment for a mucocele?removal (can cause resorption and displacement of adjacent teeth)
Most common group extrinsic lesions that encroach on maxillary sinusOdontogenic cysts
An “implantation” cyst derived from sinus lining epithelium which is entrapped in the adjacent bone near to, but separate from the sinusSurgical Ciliated Cyst of the Maxilla
benign proliferation of compact and/or cancellous boneosteoma
Rare benign vascular and fibrous tumor‐like lesion of the sinus, found in male adolescents, originates at sphenopalatine foramine and indent posterior sinus wallNasopharyngeal Angiofibroma
What type of sinus papilloma have the highest chance of malignant transformation?Inverted (other types are fungal and cylindrical cell)
inverted sinonasal papilloma that undergoes malignant transformation becomes what type of cancer?SCC
most common type of malignancy in sinonasal areaSquamos Cell Carcinoma (SCC)
SCC Invasion of ___ wall --> nasal obstruction, discharge, bleeding, painMedial
SCC Invasion of ___ wall --> Vestibular and facial swelling, hyperesthesia maxillary teethlateral
SCC Invasion of ___ --> unexplained pain and altered sensation of teeth, loose teeth, swelling of palate or alveolar ridge, ill-fitting dentures, PDL space widening Floor
SCC Invasion of ___ wall --> trismus of muscles of mastication; referred pain distribution of 2nd and 3rd divisions of CN VPosterior
SCC of the maxillary sinus may resemble chronic sinusitis or polyp formation but the evidence of malignancy can be determined how?changes in surrounding bone
displacement of the teeth due to excessive PDL widening is due to what type of malignancyChondrosarcoma (it was the only thing on the slide... they may not ask about it)
memorize

Recent badges