Coronal CT scan showing right maxillary sinus opacification. Also, note the septal deviation to the right and the hypertrophy of the left inferior turbinate.
Coronal CT scan of the sinuses showing bilateral maxillary sinusitis. The opacification is more prominent on the left side. The septum is also deviated to the left
Варианты нормальной пневматизации клиновидной кости, имитирующие патологию.
(Sometimes,the prodigiousapparatus of CTandMRI, that allow ustoexplorethe most remote cornersof the human body, playwith usreproducing some imagesthat simulatedisease processes.TheRadiologysts andRadiologic Technologists,know much aboutthese things,the mistakes we makeand the increaseofthemwhen morescans are performedwithout properclinical interpretation.These images, found inacraneoencephalic Computed Tomographyscan, demonstrate howcapricioushiperneumatizaciónsphenoid sinus, convertedanormalbullaeinintracranialdisturbingair bubbles(Figure1).
FIGURA 1) En esta imagen la neumatización de las apófisis clinoides posterior y del techo del seno esfenoidal simula la existencia de burbujas aéreas intracraneales. Falsa imagen de neumocéfalo que puede inducir a error fácilmente.
(Inthis CT picturethe pneumatization of theposterior clinoid processandsphenoid sinusroofsimulatesthe presence ofintracranialairbubbles. A falseimage of neumocephalus that caneasilymislead).
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FIGURA 2) Una imagen más caudal demuestra un seno muy neumatizado, con pequeñas bullas aéreas perifericas. Hay que tener en cuenta que el seno esfenoidal se encuentra inmediatamente por debajo del área selar y que la neumatización de las clinoides corresponde a una prolongación de la cavidad del seno.
FIGURA 3) La imagen con reconstrución de hueso permite apreciar la extensión de las bullas (Flechas) producidas por la hiperneumatización del seno esfenoidal. Aparecen contorneadas por un borde escleroso que las distingue de las burbujas del neumocéfalo.
(The image permitto appreciate theextent ofbullae(arrows) produced by thehiperneumatización ofthe sphenoid sinus.They appearoutlined byasclerotic rimthat distinguishes them fromthe bubbles ofpneumocephalus).
FIGURA 4) Más bullas aéreas en las apófisis clinoides posteriores.
(Moreairbullaeonthe posterior clinoid processes).
FIGURA 5) Esta imagen demuestra el aspecto polilobulado del seno esfenoidal.
(This image shows thelobulateddappearanceof the sphenoid sinus).
Hospital Universitario Miguel Servet. (HUMS) Zaragoza.Spaiñ
Case 1. Left acute otomastoiditis
Case 2. Right coalescent otomastoiditis
Case 3. Dural sinus thrombosis (post-contrast axial CT and axial 2D-TOF MRV)
Case 4. Intracranial abscess
(post-contrast axial CT and Cor T1 gad MR)
Case 5. External otitis and acute otomastoiditis
Case 6. Right pars flaccida cholesteatoma
Case 7. Left pars tensa cholesteatoma (*)
Case 8. Labyrinthitis ossificans
(axial and coronal CT; axial T2 BFFE)
figure a. (*) ossified bony labyrinth and cochlea
Case 9. Petrous apex cholesterol granuloma
(axial CT in bone window, NECT in soft tissue window and CECT in soft tissue window)
Case 10. Axial T1, T2 and DWI of petrous apex cholesterol granuloma
Case 1. Bony external auditory atresia (EAC)
Case 2. Cochlear aplasia
Case 3. Common cavity malformation
Case 4. Incomplete partition - I
(cystic cochleovestibular malformation)Case 5. Incomplete partition - II
(classic Mondini malformation)Case 6. Incomplete partition variant
(presence of 1.5 turns of the cochlea, but the vestibular aquaduct is normal size)Case 7. Enlarged right vestibular aquaduct
Case 8. CHARGE syndrome
Case 9. Superior semicircular dehiscence
Case 10. Aberrant ICA
Case 11. Persistent stapedial artery
Case 1. Bilateral anterior longitudinal temporal bone fractures with ossicular injury
Case 2. Left transverse temporal bone fracture with ossicular injury
Case 3. Right complex temporal bone fracture
Case 4. Right oblique temporal bone fracture
Case 1. IAC schwannoma and meningioma in patient with NF-2
(axial CT in bone window, axial NECT in soft tissue window, and axial T1 gad MR)
Case 2. Right geniculate ganglion facial nerve schwannoma
(axial CT in bone windows and Cor T1 gad MR)
Case 3. Left tympanic segment facial nerve schwannoma
(cor CT in bone window, axial CT in bone window, Cor T1 gad MR)
Case 4. Glomus tympanicum
(axial and coronal CT in bone window, Cor T1 gad MR)
Case 5. Glomus jugulare
Axial and coronal T1 gad MR images
Case 6. Endolymphatic sac tumor
(axial CT in bone windows, axial T1 and T2 MR images)
Case 7. Early otospongiosis (retro-fenestral)
Case 8. Otospongiosis (fenestral and retro-fenestral)
Case 9. Polyostotic fibrous dysplasia
Case 10. Fibrous dysplasia affecting the ossicles and facial nerve canal
Case 11. Aneurysmal bone cyst of the temporal bone
(axial CT in bone window, axial T1 and axial T2 MR images)
Case 12. Osteochondroma
Axial plane
Coronal plane
Parallel plane
Perpendicular plane
Sinusitis Imaging
http://emedicine.medscape.com/article/384649-overview#showall
Визуализация заболеваний придаточных полостей носа
http://www.ajronline.org/doi/full/10.2214/AJR.07.7031
Варианты нормальной пневматизации клиновидной кости, имитирующие патологию.
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Hospital Universitario Miguel Servet. (HUMS) Zaragoza.Spaiñ