Axial contrast-enhanced CT scan demonstrates normal jugulodigastric lymph nodes bilaterally (curved arrows), which should not be confused with lesions.

Slides:

Advertisements

Similar presentations

Bilateral cavitary plaques.

Advertisements

Case 1. Case 1. Images in a 51-year-old man with a history of painful maxillary swelling caused by GCG.A, Contrast-enhanced axial CT image demonstrates.

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.

A, CT scan showing disk herniation in the posterolateral part of the L4-L5 disk.B, Transforaminal periradicular infiltration at the L5–S1 level, demonstrating.

Patient with cholesteatoma on the right and chronic otitis media without cholesteatoma on the left. Patient with cholesteatoma on the right and chronic.

Axial contrast-enhanced CT scan of the neck demonstrates a hypoattenuated poorly circumscribed right peritonsillar/parapharyngeal masslike lesion, with.

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.

Image shows appearance of septum within dural sinus in a 68-year-old woman with normal results of an MR imaging examination. Image shows appearance of.

Two coronal views of the same case, demonstrating the aggressive appearing imaging features of mastoid segment FNSs. The left coronal T1-weighted postcontrast-enhanced.

Case 2: 14-year-old boy with headache, vomiting, dizziness, and ringing in the ear. Case 2: 14-year-old boy with headache, vomiting, dizziness, and ringing.

A, Axial source image from a contrast-enhanced MRA unambiguously demonstrates a tiny (

Case 1: 15-year-old boy with juvenile nasopharyngeal angiofibroma on the right side. Case 1: 15-year-old boy with juvenile nasopharyngeal angiofibroma.

Contrast-enhanced coronal CT scan of a rabbit.

Case 1, extranodal orbital involvement in Rosai-Dorfman disease.

A, Soft-tissue window axial contrast-enhanced CT through thyroid cartilage shows expansile lesion from left alar of thyroid cartilage. A, Soft-tissue window.

Serial imaging of a child with a clinical complex of bilateral facial PWS, early-onset severe seizures, and fatally progressive encephalopathy. Serial.

Case 4: 25-year-old woman with pulsatile tinnitus.

Contrast-enhanced CT scans show increased enhancement at the right cavernous sinus.A, Contrast-enhanced CT scan obtained in 1994 shows that the right tentorium.

AP (A) and lateral (B) radiographs demonstrating a discontinuous segment of the catheter, with broken catheter ends in the subcutaneous tissue of the lower.

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.

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.

Adrenoleukodystrophy (A and B) and peroxisomal acyl-coenzyme A oxidase deficiency (C). Adrenoleukodystrophy (A and B) and peroxisomal acyl-coenzyme A oxidase.

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.

A 41-year-old man and his son had positive genetic testing for LDS type 1 after he had intracranial hemorrhage as a complication of dissection and some.

A, Contrast-enhanced CT scans obtained with protocol C, B, and A (from left to right) in different patients with papillary thyroid cancer. A, Contrast-enhanced.

Axial T2-weighted MR imaging at the level of the internal auditory canals, demonstrating a large, homogeneous mass filling the right internal auditory.

Cystic changes within the endplates adjacent to the implants.

A,B. A,B. Contrast-enhanced CT scan of the neck demonstrates extensive soft tissue edema. At the level of the vocal cords, there is a linear attenuation.

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),

CT scan of the neck shows multiple cervical lymph nodes with ring enhancement, central necrosis, and an abscess with diffuse strong edematous infiltration.

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.

Case 1: 52-year-old woman with buzzing in right ear.

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.

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.

Axial contrast-enhanced CT scan shows bilateral facial soft-tissue tumor infiltration, bilateral enlarged middle cranial fossae (arrowheads), bilateral.

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.

A, Curved multiplanar reconstruction image obtained with a CT myelography shows the left hemicord with the small remnant of subarachnoid space running.

Axial CT scan shows decalcification of sphenoid bone (arrowheads) adjacent to neurofibroma infiltration of the lateral rectus muscle (arrows) in the absence.

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.

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–C, Thin-section (1-mm) coronal and axial CT images of the skull base obtained with an edge-enhancing bone algorithm show enlargement (arrows) of the.

A and B, Two consecutive axial CT scans in a patient with a right-sided glomus vagale show atrophy of the right PCA muscle and right cricothyroid muscle.

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.

Atypical imaging findings of giant ranulas

Axial CT at level of thyroid cartilage shown on soft tissue window (width, 340 HU; center, 43 HU) in panel A and narrow window (width, 1 HU; center, 130.

Patient 4, a 72-year-old man presenting with headache, dysphagia, and progressive hoarseness. Patient 4, a 72-year-old man presenting with headache, dysphagia,

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),

Axial contrast-enhanced CT (A) and sagittal contrast-enhanced reformatted (B) images reveal a well-defined ovoid mass with homogeneous intense enhancement.

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.

Imaging of a 65-year-old man who presented with intractable epistaxis and whose history included right nephrectomy for renal cell carcinoma 5 years earlier.

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.

Unenhanced high resolution bone window CT scans of the neck show the heavily ossified styloid process in the axial plane. Unenhanced high resolution bone.

Presentation transcript:

Axial contrast-enhanced CT scan demonstrates normal jugulodigastric lymph nodes bilaterally (curved arrows), which should not be confused with lesions originating in the parotid tail. Axial contrast-enhanced CT scan demonstrates normal jugulodigastric lymph nodes bilaterally (curved arrows), which should not be confused with lesions originating in the parotid tail. Note the normal parotid tail tissue located anterolateral to the SCM (straight arrow). The lymph nodes lie anteromedial to the muscle. (Reprinted with permission from reference 1.)‏ Bronwyn E. Hamilton et al. AJNR Am J Neuroradiol 2003;24:1757-1764 ©2003 by American Society of Neuroradiology