Case 1, 62-year-old female with 2-year history of firm, painless left parotid mass. Case 1, 62-year-old female with 2-year history of firm, painless left.

Slides:



Advertisements
Similar presentations
MR images of cytoarchitectural dysplasia
Advertisements

Low SI on axial T2-weighted images as a sign of malignancy.
Precontrast coronal T1-weighted view shows metastatic nodules (long arrows) from breast cancer in the vicinity of the left BPL and another metastatic mass.
A 21-year-old man with recurrent left S1 sciatica and radiculopathy by electromyography. A 21-year-old man with recurrent left S1 sciatica and radiculopathy.
Two axial images from the same case of a facial nerve schwannoma involving the right mastoid segment of the facial nerve canal. Two axial images from the.
Axial MR images in a 51-year-old woman with parkinsonism.
A 76-year-old man with a carcinoma ex pleomorphic adenoma (case 2).
Case 2. Case 2. A 66-year-old man who received epidural anesthesia and underwent MR imaging 2 days (A and B), 2 months (C and D), and 5 months (E and F)
Intraosseous temporal bone meningioma in a 45-year-old woman who presented with left-sided hearing loss and tinnitus. Intraosseous temporal bone meningioma.
A, Measurement of the angle between the TS-OP line and the hard palate in the lateral scout view of the brain CT (black arrow). A, Measurement of the angle.
66-year-old woman with well-differentiated squamous cell carcinoma of lower gingiva.A, Axial T1-weighted MR image of metastatic submandibular node (arrow)
Case 2. Case 2. Organized hematoma arising from antrochoanal polyp in a 12-year-old girl. A, Contrast-enhanced axial CT scan shows marked irregular nodular.
Types I and II LTS. Axial contrast-enhanced T1-weighted MR image obtained in a 55-year-old man with a type I LTS on the left and a type II LTS on the right.
A 48-year-old man with a cerebral metastasis from a hepatocellular carcinoma. A 48-year-old man with a cerebral metastasis from a hepatocellular carcinoma.
Axial view MR images of the head, obtained at the time of second presentation.A, T1-weighted MR image (400/15) shows thickening of the dura overlying the.
Case 2, an 82-year-old man. Case 2, an 82-year-old man. MR images of the cervical spine, obtained 4 hours after a fall, reveal a large SEH in the dorsal.
A, 55-year-old woman who underwent superficial parotidectomy 22 years before recurrence. A, 55-year-old woman who underwent superficial parotidectomy 22.
Patient 9. Patient 9. A 31-year-old man with mental status changes and seizure activity.A, T2-weighted axial MR image shows bilateral frontal and right.
A 45-year-old woman with a history of alcohol abuse had changes in consciousness and ocular abnormalities.A, No signal intensity alterations are seen on.
Case 10. Case 10. Organized hematoma of the maxillary sinus in a 76-year-old woman. A, Precontrast axial CT scan with bone window setting shows a large,
Coronal FLAIR images (A–C) document decreasing left hippocampal mass effect and signal intensity over 5-year period (black arrowhead). Coronal FLAIR images.
Normal apical ligament (arrow) and normal anterior atlantoaxial ligament (arrowhead) in the diagram (A) and the midsagittal T2-weighted MR image (B) in.
A and B, Axial and coronal high-resolution CT images of the larynx in a 73-year-old patient with papillary thyroid cancer and left vocal cord paralysis.
Patient 12. Patient 12. A 43-year-old woman with headache, blurred vision, and mental status change.A, T2-weighted axial MR image shows bilateral centrum.
T2-weighted, PD-weighted, FLAIR, and DWI images showing cortical abnormalities in the right parietal lobe; FLAIR and DWI also show abnormalities in the.
Type 1 pedicle marrow signal intensity changes associated with degenerative facet disease. Type 1 pedicle marrow signal intensity changes associated with.
Images reveal arachnoid granulations in a 54-year-old man with headaches who had normal results of an MR imaging study.A, Sagittal reconstruction image.
Mass was believed to represent a submandibular space or gland tumor by the referring general surgeon, who initially planned to excise the mass. Mass was.
A, FLAIR demonstrating acute infarct within a superficial distribution
Axial T2-weighted MR imaging at the level of the internal auditory canals, demonstrating a large, homogeneous mass filling the right internal auditory.
Case 1, a 69-year-old woman. Case 1, a 69-year-old woman. MR images of the thoracolumbar spine, obtained 10 hours after sudden-onset severe back pain,
Ill-defined margins as a sign of malignancy.
Axial T2-weighted MR images
Images from the case of a 31-year-old woman with a 20-year history of ataxia telangiectasia who was admitted to the hospital after complaining of dizziness,
A–C, Sagittal T1-weighted (A), sagittal T2-weighted (B), and axial T2-weighted (C) MR images of the cervical spine in a patient with severe myelopathy.
High-resolution MR imaging, CTA, and sonography of the left carotid artery of a 77-year-old man. High-resolution MR imaging, CTA, and sonography of the.
A 50-year-old woman with nonenhancing WHO grade II diffuse astrocytoma
T2-weighted MR imaging appearance of a healthy 60-year-old woman (A), a 66-year-old woman with idiopathic Parkinson disease (B), and a 16-year-old female.
A 63-year-old man with left L5 radiculopathy on the electromyographic study, who underwent an operation 12 months ago. A 63-year-old man with left L5 radiculopathy.
A, Coronal enhanced MR image of an IAC meningioma demonstrates intense enhancement of the intralabyrinthine structures (curved white arrow). A, Coronal.
A, Axial T2 MR imaging at the level of the hard palate shows an enlarged right lateral retropharyngeal lymph node (asterisk). A, Axial T2 MR imaging at.
A 47-year-old woman with a history of alcohol abuse presented with ataxia, changes in consciousness, and ocular abnormalities. A 47-year-old woman with.
Bone algorithm CT images from the same case, demonstrating focal enlargement of the right tympanic segment, in the axial (left) and coronal (right) planes.
A 67-year-old man with intraorbital, infraorbital nerve, and frontal nerve lesions. A 67-year-old man with intraorbital, infraorbital nerve, and frontal.
Axial HRCT sialograms (soft tissue window) of the left parotid gland through the inferior portion of the EAC show (arrow) submucosal nodular enhancement.
Laryngeal amyloidoma in a 27-year-old man with long-standing juvenile rheumatoid arthritis and progressive hoarseness. Laryngeal amyloidoma in a 27-year-old.
Sagittal T1-weighted MR image of the pituitary gland in a term neonate (born at gestational week 38) obtained near term (corrected age of 39 weeks; 7 days.
Orbital lymphoma (A–C) compared with OIS (D–F).
Case 2. Case 2. A, Axial T1-weighted image (spin-echo: TR/TE, 650/9.3) shows a lobulated mass in the right parotid gland, with a low-signal-intensity well-defined.
Case 7, 75-year-old man with history of squamous cell carcinoma of the larynx status postradiation found to have an enlarging mass in the left parotid.
MR images of the brain (axial sections, fluid-attenuated reversion recovery sequences) show the symmetric hyperintensities (arrows) involving the pyramidal.
A 43-year-old male patient with headaches (case 33).
A 61-year-old woman with RCVS
Axial T2-weighted image (A) demonstrates focal cortical dysplasia (arrow) centered in the left anterior temporal lobe in a right-handed patient. Axial.
The “white gray sign.” Axial high-resolution 3D inversion recovery fast-spoiled gradient-echo T1-weighted image demonstrates decreased gray-white contrast.
A, Axial T2-weighted image (3500/90/2) shows a well-defined deep right occipital white matter lesion (asterisk) and a subcortical linear hyperintensity.
Patient 2.A, Axial T1-weighted image (400/14/2) shows a hyperintense mass in the right vestibule (arrow).B, Axial T2-weighted fast spin-echo image (4000/102/4)
A, Immediate postoperative sagittal T1-weighted image shows a C-shaped flap underlying the operative defect (white arrow). A, Immediate postoperative sagittal.
Axial T2-weighted MR image shows normal flow void in the right internal jugular vein (arrows), whereas flow-related enhancement can be seen in the left.
MR images in a 69-year-old woman with cervical and thoracic back pain.
MR images of patient 1.Pre- (A) and postcontrast (B) T1-weighted images reveal a homogeneously hypointense (compared with the pons) mass located in the.
Intracranial amyloidoma in a 54-year-old woman with 2 episodes of left-hemispheric seizures. Intracranial amyloidoma in a 54-year-old woman with 2 episodes.
A, Axial T1- weighted MR image shows a predominantly isointense lesion in the right parietal bone. A, Axial T1- weighted MR image shows a predominantly.
A 19-year-old man with a nonenhancing WHO grade III anaplastic astrocytoma. A 19-year-old man with a nonenhancing WHO grade III anaplastic astrocytoma.
A 75-year-old man with a left brachial zoster-associated plexopathy.
A 48-year-old woman with a carcinoma ex pleomorphic adenoma (case 1).
Cavernoma/telangiectasia.
A, Contrast-enhanced axial CT scan at the level of the thyroid gland shows a small air pocket within the left lobe of the thyroid gland (black arrow),
KD involving bilateral buccal spaces in a 52-year-old man.
LEC of the right parotid gland in a 38-year-old man with painless masses in the right parotid regions for approximately 3 years. LEC of the right parotid.
Presentation transcript:

Case 1, 62-year-old female with 2-year history of firm, painless left parotid mass. Case 1, 62-year-old female with 2-year history of firm, painless left parotid mass. A, Axial T1-weighted MR image shows a well-demarcated mass within the superficial lobe of the left parotid gland (white arrow) that is T1 hypointense. B, Axial T2-weighted MR image with fat saturation shows the mass (white arrow) to be isointense to the native parotid gland. C, Axial T1-weighted postgadolinium sequences illustrates the mass (white arrow) as isointense to the native parotid gland. N.D. Patel et al. AJNR Am J Neuroradiol 2011;32:1703-1706 ©2011 by American Society of Neuroradiology