Atypical imaging findings of giant ranulas

Slides:



Advertisements
Similar presentations
Patient 4.A, Axial T2-weighted scan shows a huge extra-axial cyst (white arrows) with septation (black arrow) that displaces the corpus callosum posteriorly.B,
Advertisements

Axial T1-weighted image after contrast administration (A) and a FLAIR image (B) demonstrating a left parietal subcortical DVA with deep venous drainage.
A 50-year-old man with MD. Axial thin-section CT image shows decreased distance between the vertical limb of the posterior semicircular canal and the posterior.
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.
A 30-year-old man with PSA
123I/Tc-99m sestamibi subtraction scan (top left); neck sonogram in region of cystic mass (top right); axial arterial phase CT scan (bottom left); and.
Otolaryngology referred this patient for imaging after palpating a mass in the “left parotid tail.” Axial contrast-enhanced CT scan through the mass reveals.
Patient with cholesteatoma on the right and chronic otitis media without cholesteatoma on the left. Patient with cholesteatoma on the right and chronic.
Axial CT scans of the brain and neck performed with contrast medium.
Axial contrast-enhanced CT scan of the neck demonstrates a hypoattenuated poorly circumscribed right peritonsillar/parapharyngeal masslike lesion, with.
Axial contrast-enhanced CT scan demonstrates normal jugulodigastric lymph nodes bilaterally (curved arrows), which should not be confused with lesions.
Case 3. Case 3. A 10-year-old boy with sublingual swelling shows partial shrinkage after 3 OK-432 injections.A and B, The initial contrast-enhanced CT.
Intraosseous temporal bone meningioma in a 45-year-old woman who presented with left-sided hearing loss and tinnitus. Intraosseous temporal bone meningioma.
VW-MR imaging to differentiate among causes of intracranial arterial stenosis when angiography findings are inconclusive. VW-MR imaging to differentiate.
Two coronal views of the same case, demonstrating the aggressive appearing imaging features of mastoid segment FNSs. The left coronal T1-weighted postcontrast-enhanced.
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.
A, Axial source image from a contrast-enhanced MRA unambiguously demonstrates a tiny (
MR images demonstrating a large left middle cranial fossa mass.
Accessory salivary tissue has a variable appearance and location in the oral cavity. Accessory salivary tissue has a variable appearance and location in.
Unilateral AFP and transient urinary retention in 18-month-old girl with lumbosacral radiculomyelitis. Unilateral AFP and transient urinary retention in.
Patient 14. Patient 14. Secondary progressive MS. Axial contrast-enhanced T1-weighted MR image (600/27/1 [TR/TE/excitation]). A, No enhanced lesion can.
Axial contrast-enhanced neck CT scans and 3D reformat performed in a 59-year-old-man who underwent fibular free flap reconstruction for osteomyelitis complicating.
Intramuscular course and entrapment of the C5 nerve root.
64-year-old man shows abscess formation in the extraglandular space.
42-year-old male patient with follow-up neck CT for lymphoma at 70 kVp (A) and corresponding previous CT at 120 kVp (B). 42-year-old male patient with.
Future patient with NPH with 19 years of earlier imaging showing ventriculomegaly before symptoms of NPH. A, CT scan from 19 years earlier obtained for.
Aberrant course of the ICA in a 25-year-old man presenting with pulsatile tinnitus. Aberrant course of the ICA in a 25-year-old man presenting with pulsatile.
A, Axial CT of a patient with bilateral DON and lack of fat prolapse through the superior ophthalmic fissure. A, Axial CT of a patient with bilateral DON.
Venous infarction in a patient with epidural and paraspinal abscesses.
High resolution bone algorithm CT scans.
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.
Two different cases of FNS, both coronal plane bone algorithm CT images show significant enlargement of the tympanic segment of the facial nerve with the.
A, Axial non-enhanced CT scan (soft-tissue algorithm) shows a heterogeneous right temporal bone lesion, with cortical thinning and bone remodeling of the.
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.
Axial CT image through L5/S1 (3-mm section, 100 KVp, 50 mA).
Axial T2-weighted MR imaging at the level of the internal auditory canals, demonstrating a large, homogeneous mass filling the right internal auditory.
Four-point subjective rating scale of the perihippocampal fissures (PHF).A and B, Axial and coronal view of same case. Four-point subjective rating scale.
A, A 44-year-old woman with CP
PCT imaging with ICA reference of a patient with right tongue base squamous cell carcinoma. PCT imaging with ICA reference of a patient with right tongue.
KD involving the postauricular area and occipital scalp in an 11-year-old boy. KD involving the postauricular area and occipital scalp in an 11-year-old.
Contrast-enhancing lesions on CT scans (A–D) in 4 patients with AIDS-related PCNSL. Note irregularly enhancing lesions in the right parietal lobe (A),
Case 3. Case 3. A 24-year-old woman with an oro- and hypopharyngeal lesion.A, Contrast-enhanced axial CT scan shows a soft-tissue mass in the right hypopharynx.
A and B, CT images on a patient status post total thyroidectomy for thyroid cancer show a small enhancing lesion near the right tracheoesophageal groove.
Coronal postcontrast T1-weighted image of the orbits in patient 1 demonstrates a heterogeneously enhancing ovoid lesion involving the right medial rectus.
Axial contrast-enhanced CT scan shows ill-defined fat plane between the muscles. Axial contrast-enhanced CT scan shows ill-defined fat plane between the.
Contrast-agent–enhanced T1-weighted MR images (700/15) obtained in a 71-year-old man with skin cancer, who had TMJ tenderness and discomfort in the left.
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, Curved multiplanar reconstruction image obtained with a CT myelography shows the left hemicord with the small remnant of subarachnoid space running.
Sagittal reconstruction of a CT scan of a 6-year-old boy (patient 3) after a fall (GCS = 15) demonstrates an REH (thick white arrow), which causes mild.
Axial CT images at the centrum semiovale level show a small left frontal hemorrhage corresponding to shear injury. Axial CT images at the centrum semiovale.
32-year-old man with a recurrent episode of left-sided neck infection.
Axial CT scan shows decalcification of sphenoid bone (arrowheads) adjacent to neurofibroma infiltration of the lateral rectus muscle (arrows) in the absence.
Neoplastic causes of perilabyrinthine fistula.
Case 1. Case 1. A 6-year-old girl with an ill-defined lesion of the left pyriform sinus.A, Contrast-enhanced axial CT scan shows a moderately enhancing.
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.
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.
Axial view contrast-enhanced CT scans of three patients with cystic hygromas show helpful differentiating features.A, Typical cystic hygroma shows lobulated.
Patient 10. Patient 10. A 67-year-old man after radiation therapy at an outside hospital for base-of-tongue cancer. A and B, Axial contrast-enhanced CT.
A, Axial T2-weighted image from a routine high-resolution 3T screening study to evaluate internal auditory canal lesions shows the right CNIII entering.
Axial contrast-enhanced CT scan through the parotid tail demonstrates a dominant cyst (straight arrow). Axial contrast-enhanced CT scan through the parotid.
Contrast-enhanced axial CT scan through the larynx with soft-tissue reconstruction demonstrates complete ossification of the thyroid (white arrow) and.
A 75-year-old woman with compression fractures at T12 and L1, which were treated with vertebroplasty. A 75-year-old woman with compression fractures at.
Patient 16: gestational-week fetus.
Tilted head position for intracranial CT angiography in a patient who has undergone clipping of a single aneurysm. Tilted head position for intracranial.
Twelve-year-old girl with coinfection of JE and NCC (patient 5).
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),
A 73-year-old woman with well-differentiated SCCA of the lacrimal sac and nasolacrimal duct. A 73-year-old woman with well-differentiated SCCA of the lacrimal.
Two cases with Sylvian fissure SAH
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:

Atypical imaging findings of giant ranulas Atypical imaging findings of giant ranulas.A, Axial view contrast-enhanced CT scan shows peripheral enhancement of this infected giant ranula. Atypical imaging findings of giant ranulas.A, Axial view contrast-enhanced CT scan shows peripheral enhancement of this infected giant ranula. Note mild dilation of the submandibular gland duct (arrow) lateral to the sublingual tail in the sublingual space.B and C, Contiguous (B slightly superior to C) axial view contrast-enhanced CT scans of a patient who had undergone seven failed neck operations. Mild septation is present (white arrows). Subsequent resection of the left sublingual gland resulted in complete resolution. Note the smooth, tapered tail extending into the sublingual space (black arrow). The lesion was pathologically proved to be a giant ranula. Reprinted from Harnsberger (17) with permission from the Electronic Medical Education Resource Group. Andre J. Macdonald et al. AJNR Am J Neuroradiol 2003;24:757-761 ©2003 by American Society of Neuroradiology