Pictorial Essay: Imaging of Peripheral Nerve Sheath Tumours

2011 ◽  
Vol 62 (3) ◽  
pp. 176-182 ◽  
Author(s):  
Daniel W.Y. Chee ◽  
Wilfred C.G. Peh ◽  
Tony W.H. Shek
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Peripheral Nerve ◽  
Imaging Features ◽  
Resonance Imaging ◽  
Target Sign ◽  
Nerve Sheath ◽  
Pictorial Essay ◽  
Characteristic Imaging ◽  
Distinguishing Features

Peripheral nerve sheath tumours (PNST) may be benign or malignant. Benign PNSTs include neurofibroma and schwannoma. Neurogenic tumours share certain characteristic imaging features, suggested by a fusiform-shaped mass with tapered ends, the “split-fat” sign, atrophy of the muscles supplied by the involved nerve, the “fascicular sign,” and the “target sign”; these imaging features are best demonstrated on magnetic resonance imaging. This pictorial essay emphasizes the characteristic signs and distinguishing features of PNSTs on imaging.

Magnetic Resonance Imaging of Peripheral Nerve Sheath Tumors

1990 ◽  
Vol 25 (11) ◽  
pp. 1238-1245 ◽  
Author(s):  
F A MANN ◽  
WILLIAM A. MURPHY ◽  
WILLIAM G. TOTTY ◽  
B J MANASTER
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Peripheral Nerve ◽  
Resonance Imaging ◽  
Nerve Sheath Tumors ◽  
Peripheral Nerve Sheath Tumors ◽  
Nerve Sheath

scholarly journals Schwannoma: A Rare Hoffa's Fat Pad Tumor

2019 ◽  
Vol 05 (02) ◽  
pp. e62-e64
Author(s):  
Jonathan Ruben Caballero Martel ◽  
Sara Estévez Sarmiento
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Peripheral Nerve ◽  
Schwann Cells ◽  
Resonance Imaging ◽  
Fat Pad ◽  
Medial Aspect ◽  
Hoffa’S Fat Pad ◽  
Nerve Sheath ◽  
Knee Magnetic Resonance Imaging

AbstractHoffa's fat pad can be affected by a variety of tumors. Schwannomas are benign and typically solitary neoplasms of the peripheral nerve sheath; they are made up of the neoplastic Schwann cells and are usually located eccentrically. Malignant schwannomas are extremely uncommon. Here we report a case of an intra-articular schwannoma of the knee. A 54-year-old man presented with a painful lump in the medial aspect of the knee. Magnetic resonance imaging revealed a well-circumscribed intra-articular mass, which was later diagnosed as an intra-articular schwannoma based on biopsy findings.

scholarly journals Nerve Tumors: What the MSK Radiologist Should Know

2019 ◽  
Vol 23 (01) ◽  
pp. 076-084 ◽  
Author(s):  
Amanda Isaac ◽  
Bianca Bignotti ◽  
Federica Rossi ◽  
Federico Zaottini ◽  
Carlo Martinoli ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Soft Tissue ◽  
Peripheral Nerve ◽  
Soft Tissue Tumors ◽  
Imaging Feature ◽  
Resonance Imaging ◽  
Neurogenic Tumors ◽  
Nerve Sheath ◽  
Neural Origin

AbstractNerve tumors are rare and heterogeneous soft tissue tumors arising from a peripheral nerve or showing nerve sheath differentiation. In a radiologic setting it is necessary to recognize soft tissue lesions that are of neural origin, their association with a peripheral nerve, and whether they are a true tumor or a so-called pseudotumor such as a neuroma, fibrolipoma, or peripheral nerve sheath ganglion. Ultrasound (US) and magnetic resonance imaging are the best modalities to characterize these lesions. US can be used to guide biopsy in difficult and uncertain cases when the lesion is either indeterminate or possibly malignant. At present, no single imaging feature or reproducible criteria, or a combination, can differentiate reliably between a neurofibroma and a schwannoma or discriminate with certainty between benign and malignant neurogenic tumors. Adequate imaging and consultation with a nerve tumors/sarcoma unit is advised.

scholarly journals Magnetic Resonance Imaging of Non-ischemic Cardiomyopathies: A Pictorial Essay

2015 ◽  
Vol 5 ◽  
pp. 37 ◽  
Author(s):  
Cristina I Olivas-Chacon ◽  
Carola Mullins ◽  
Kevan Stewart ◽  
Nassim Akle ◽  
Jesus E Calleros ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Systemic Disease ◽  
Left Ventricular ◽  
Imaging Features ◽  
Resonance Imaging ◽  
Imaging Tool ◽  
Pictorial Essay ◽  
And Function

Non-ischemic cardiomyopathies are defined as either primary or secondary diseases of the myocardium resulting in cardiac dysfunction. While primary cardiomyopathies are confined to the heart and can be genetic or acquired, secondary cardiomyopathies show involvement of the heart as a manifestation of an underlying systemic disease including metabolic, inflammatory, granulomatous, infectious, or autoimmune entities. Non-ischemic cardiomyopathies are currently classified as hypertrophic, dilated, restrictive, or unclassifiable, including left ventricular non-compaction. Cardiovascular Magnetic Resonance Imaging (CMRI) not only has the capability to assess cardiac morphology and function, but also the ability to detect edema, hemorrhage, fibrosis, and intramyocardial deposits, providing a valuable imaging tool in the characterization of non-ischemic cardiomyopathies. This pictorial essay shows some of the most important non-ischemic cardiomyopathies with an emphasis on magnetic resonance imaging features.

scholarly journals Magnetic Resonance Imaging of Benign Cardiac Masses: A Pictorial Essay

2013 ◽  
Vol 3 ◽  
pp. 34 ◽  
Author(s):  
Thomas J. Ward ◽  
Michael A. Kadoch ◽  
Adam H. Jacobi ◽  
Pablo P. Lopez ◽  
Javier Sanz Salvo ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Accurate Diagnosis ◽  
Common Finding ◽  
Cardiac Tumors ◽  
Imaging Features ◽  
Resonance Imaging ◽  
Pictorial Essay ◽  
Cardiac Masses ◽  
Primary Cardiac Tumors

The differential diagnosis for a cardiac mass includes primary and metastatic neoplasms. While primary cardiac tumors are rare, metastatic disease to the heart is a common finding in cancer patients. Several “tumor-like” processes can mimic a true cardiac neoplasm with accurate diagnosis critical at guiding appropriate management. We present a pictorial essay of the most common benign cardiac masses and “mass-like” lesions with an emphasis on magnetic resonance imaging features.

MAGNETIC RESONANCE IMAGING AND ULTRASONOGRAPHY IN THE DIAGNOSIS OF A MALIGNANT PERIPHERAL NERVE SHEATH TUMOR IN A DOG

1999 ◽  
Vol 40 (4) ◽  
pp. 367-371 ◽  
Author(s):  
Simon R. Platt ◽  
John Graham ◽  
Cheryl L. Chrisman ◽  
Kathleen Collins ◽  
Sundeep Chandra ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Peripheral Nerve ◽  
Nerve Sheath Tumor ◽  
Resonance Imaging ◽  
Peripheral Nerve Sheath Tumor ◽  
Nerve Sheath
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