Bilateral asymmetrical rhinoscleroma.

Slides:

Advertisements

Similar presentations

Patient 4. Patient 4. Sinonasal carcinoma t(15;19). A, CT scan demonstrates a midline sinonasal tumor (arrow) with lytic bony destruction of the paranasal.

Advertisements

Low SI on axial T2-weighted images as a sign of malignancy.

A 20-year-old man with HD. A, Neutral axial gradient-echo image at the C5 level demonstrates subtle bilateral LOA along the lateral aspects of the lamina.

A, Brachial neuritis with long thoracic nerve neuritis.

A and B, Sagittal (A) and axial (B) fast spin-echo images of the cervical spine before treatment demonstrate diffuse increase in signal intensity (arrows)

Two patients with chordoma involving the sphenoid bone.

Patient 1. Patient 1. Axial T2 FLAIR (A) MR image demonstrates abnormal T2 FLAIR signal in the right lateral pons extending into the right trigeminal nerve.

56-year-old woman with diffuse large B cell lymphoma

66-year-old woman with well-differentiated squamous cell carcinoma of lower gingiva.A, Axial T1-weighted MR image of metastatic submandibular node (arrow)

Brain and spine MR imaging of a 48-year-old woman with Zika virus infection and encephalitis and myelitis. Brain and spine MR imaging of a 48-year-old.

MR images demonstrating a large left middle cranial fossa mass.

Stretch injury with suprascapular neuropathy.

Case 5. Case 5. Organized hematoma of the maxillary sinus in a 50-year-old man. A, Precontrast axial CT scan with bone algorithm shows a large, expansile.

A and B, There is asymmetric thickening, T2 hyperintensity, and contrast enhancement of the right BPL compared with that of the left side, better seen.

A, A 71-year-old woman with undifferentiated cancer and a lesion at L4

Photomicrograph showing a polypoidal mass that is lined by benign squamous epithelium (short arrow) with proliferation of granulation tissue in the underlying.

A, A 25-year-old man with tetraplegia after a diving accident.

Persistent weakness of right lower limb 2 months after EV71 infection in a 16-month-old infant. Persistent weakness of right lower limb 2 months after.

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.

T2-weighted images of a patient with an infarction within the anterior MCA branch territory on day 5 (patient 15) show high SI changes within the ipsilateral.

Pathology slide of the meningeal tissue from a left temporal craniotomy shows inflammatory cells with lymphoplasmacytic infiltration, foamy histiocytes,

Sagittal T1-weighted (A) and coronal T2-weighted (B) MR images show the frontoparietal intracalvarial mass lesion that was hypointense on T1-(A) and hyperintense.

Calcification in aspergillosis.

A, Sagittal view through the brain stem and cervical spinal cord shows the extent of T2 hyperintensities involving the pyramidal tract and posterior columns.

Supratentorial and posterior fossa PML

Diffusion false positive in trauma (PSIF 22/2/10, 75° flip angle) found in a 17-year-old who sustained a flexion injury at C3–4 after going over handlebars.

Involvement of the frontal and parietal lobes in patients with isolated cortical hyperintensities. Involvement of the frontal and parietal lobes in patients.

Photomicrograph of the tumor shows the chordoid meningioma with eosinophilic vacuolated tumor cells (large arrow) in a mucous-rich matrix (small arrow)

Fig 1. Unenhanced axial T1-weighted MR image (728/15/2 [TR/TE/excitations]; matrix, 256 × 512; section thickness, 4 mm) shows an abnormally thickened second.

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

Case 21: 7-year-old girl with bilateral perisylvian, lateral parietal, and parieto-occipital polymicrogyria. Case 21: 7-year-old girl with bilateral perisylvian,

Signal characteristics of PML

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.

Case 3. Case 3. Chordoma in the nasopharynx in a 13-year-old boy misdiagnosed with nasopharyngeal angiofibroma by nasal endoscopy. In the nasopharynx and.

A, Sagittal fast spin-echo (FSE) T2-weighted image of the cervical and upper thoracic spine shows a mass of very low signal intensity (arrows) within the.

Follow-up prenatal MR imaging at 36 weeks’ gestation.

Histopathologic examination of a specimen obtained from left lentiform nucleus by stereotactic biopsy. Histopathologic examination of a specimen obtained.

Axial T2 (A) and axial T2 FLAIR (B) images show periventricular white matter hyperintensities (arrows), prominent Virchow-Robin spaces (arrowheads), ventriculomegaly,

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.

Sagittal T1-weighted MR image of the pituitary gland in a preterm neonate (born at gestational week 28) obtained near term (corrected age of 39 weeks;

A, Sagittal T1-weighted image demonstrates a mildly hypointense well-defined mass arising from the posterior aspect of the tongue abutting the inferior.

Spondylolysis in an 8-year-old boy.

Two autopsy cases.A, Axial FLAIR (10,000/156/1) image obtained in a 63-year-old man shows grade 1 signal intensity abnormality in the anterior subependymal.

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).

Neurothekeoma of tongue in a 15-year-old girl.

Spatial orientation of the thalami.

Epidermoid. Epidermoid. A, Axial postcontrast T1-weighted image shows a large mass (E) inside the right the Meckel cave. The mass does not enhance and.

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.

MR imaging findings of clear-cell meningioma with diffuse leptomeningeal seeding in 17-year-old man. MR imaging findings of clear-cell meningioma with.

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.

Photomicrographs show metastatic lymph nodes from poorly (A) and highly (B) differentiated squamous cell carcinomas.A, Poorly differentiated cancer cells.

Recurrent squamous cell carcinoma of the oropharynx with metastatic cervical lymph node.A, Axial T2WI shows an ill-defined irregular mass of inhomogeneous.

A 69-year-old man with small-cell carcinoma from the lung

A, T2-weighted coronal image shows a soft-tissue mass of intermediate signal intensity in the left posterior nasal cavity.B, Postcontrast T1-weighted axial.

This nasal inflammatory myofibroblastic tumor is composed of a storiform array of plump spindle cells with a background of chronic inflammatory infiltrate.

MR images of the cervical spine

Axial images from the brain of a 59-year-old woman with mixed features of response, including areas of treatment-related changes and TP. Contrast-enhanced.

Persistent diffusion abnormalities in the brain stem of patient 2.

Metastatic adenocarcinoma.

A–C, Axial T2-weighted images 7 days after the ictus, demonstrating punctate hyperintensities throughout the white matter, on a background of slightly.

A, Recurrent neoplasm in patient 6.

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

KD involving bilateral buccal spaces in a 52-year-old man.

Case 1: 51-year-old woman with low back pain and right-sided sciatica for 6 months. Case 1: 51-year-old woman with low back pain and right-sided sciatica.

A 77-year-old woman (patient 4) with multiple myeloma initially treated with pamidronate and subsequently zoledronate.A, The initial orthopantogram demonstrates.

Photomicrograph of lobulation of the cyst wall with piling up of the squamous epithelium (asterisk), characteristic of a proliferating trichilemmal cyst.

Presentation transcript:

Bilateral asymmetrical rhinoscleroma. Bilateral asymmetrical rhinoscleroma. A, Sagittal T1-weighted image (600/25) shows a homogeneously hyperintense nasal mass.B, Axial T1-weighted image (600/25) shows bilateral asymmetrical nasal masses. The one on the right extends through the anterior nares. They are hyperintense relative to muscle but less hyperintense than fat.C, Photomicrograph of a resected specimen. Intact squamous epithelium overlies heavy infiltration by chronic inflammatory cells with clear Mikulicz cells (arrow) and plasma cells, including Russell bodies (hematoxylin-eosin, original magnification ×100). Ahmed Abdel Khalek Abdel Razek, and Ahmed Ahmed Elasfour AJNR Am J Neuroradiol 1999;20:575-578 ©1999 by American Society of Neuroradiology