High-resolution ultrasound of peripheral neurogenic tumors

Gruber, Hannes; Glodny, Bernhard; Bendix, Nadine; Tzankov, Alexandar; Peer, Siegfried

doi:10.1007/s00330-007-0645-7

Cited by 115 publications

(104 citation statements)

References 41 publications

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“…HRUS assessments are also able to characterize the nature of tissues surrounding nerve structures, such as adjacent blood vessels, 12 as well as characterize the vascularity and consistency of the tumor. 6 There are considerable cost savings when comparing HRUS with other imaging modalities such as MRI.…”

Section: Discussionmentioning

confidence: 99%

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High-resolution ultrasonography and diffusion tensor tractography map normal nerve fascicles in relation to schwannoma tissue prior to resection

Simon¹,

Cage

Narvid

et al. 2014

JNS

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Section: Discussionmentioning

confidence: 99%

“…In particular, schwannomas characteristically appear as elongated spindle-shaped masses oriented longitudinally and eccentrically in relation to the nerve, displacing normal nerve tissue. 6,14 Conversely, the nerve and tumor tend to be more intermixed and may be indistinguishable in neurofibromas, particularly of the plexiform type.…”

Section: Discussionmentioning

confidence: 99%

High-resolution ultrasonography and diffusion tensor tractography map normal nerve fascicles in relation to schwannoma tissue prior to resection

Simon¹,

Cage

Narvid

et al. 2014

JNS

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“…11,12 Nerve ultrasonography is finding increasing indications for diagnosis and surgical planning of peripheral neuropathies, and due to its advantages over other imaging techniques it has also been proposed as the first-line imaging modality for selected cases. 16,33 The aim of this study is to retrospectively evaluate our experience with ultrasound in peripheral nerve imaging, to analyze the indications and clinical utility for different neuropathies, and to describe how nerve ultrasonography can be integrated into the routine evaluation and management of focal peripheral nerve injuries.…”

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confidence: 99%

Preoperative evaluation of peripheral nerve injuries: What is the place for ultrasound?

Toia

Gagliardo

D’Arpa

et al. 2016

JNS

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Since its first description for the assessment of recurrent laryngeal nerve palsy, 30 ultrasound nerve imaging has become an established technique for the study of peripheral neuropathies. Several clinical studies have recently demonstrated its high sensitivity and specificity and validated its usefulness in the diagnostic and therapeutic process for focal and generalized peripheral neuropathies. 1,4,7,15,19,29 High-resolution ultrasound is a reliable tool for examining both the extraneural and the intraneural morphology of peripheral nerves. It allows evaluation of nerve continuity and shape and detection of nerve enlargements, comabbreviatioNs CMAP = compound muscle action potential; CSA = cross-sectional area; EMG = electromyography; LSD = least significant difference; MUAP = motor unit action potential; SNAP = sensory nerve action potential. obJeCtive The purpose of this study was to evaluate the usefulness of ultrasound in the preoperative workup of peripheral nerve lesions and illustrate how nerve ultrasonography can be integrated in routine clinical and neurophysiological evaluation and in the management of focal peripheral nerve injuries. The diagnostic role and therapeutic implications of ultrasonography for different neuropathies are described. methods The authors analyzed the use of ultrasound in 119 entrapment, tumoral, posttraumatic, or postsurgical nerve injuries of limbs evaluated in 108 patients during 2013 and 2014. All patients were candidates for surgery, and in all cases the evaluation included clinical examination, electrodiagnostic studies (nerve conduction study and electromyography), and ultrasound nerve study. Ultrasound was used to explore the nerve fascicular echo-texture, continuity, and surrounding tissues. The maximum cross-sectional area (CSA) and the presence of epineurial hyperechogenicity or intraneural hyper- or hypoechogenicity, of anatomical anomalies, dynamic nerve dislocations, or compressions were recorded. The concordance rate of neurophysiological and ultrasonographic data was analyzed, classifying ultrasound findings as confirming, contributive, or nonconfirming with respect to electrodiagnostic data. The correlation between maximum nerve CSA and neurophysiological severity degree in entrapment syndromes was statistically analyzed. results Ultrasonography confirmed electrodiagnostic findings in 36.1% of cases and showed a contributive role in the diagnosis and surgical planning in 53.8% of all cases; the findings were negative ("nonconfirming") in only 10.1% of the patients. In 16% of cases, ultrasound was not only contributive, but had a key diagnostic role in the presence of doubtful electrodiagnostic findings. The contributive role differed according to etiology, being higher for tumors (100%) and for posttraumatic or postsurgical neuropathies (72.2%) than for entrapment neuropathies (43.8%). CoNClusioNs Ultrasound is a powerful, noninvasive tool for the examination of peripheral nerve injuries, and can guide diagnosis of and surgical strategy for focal peripheral ne...

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“…This finding is a conclusion of a study in which out of 88 benign sheath tumors, only 8% were properly diagnosed in the pre-surgical period and without the use of neurosonography or magnetic resonance neurography [28]. for information on other, rare but frequently malignant, processes taking place in soft tissues we encourage you to consult the relevant source [29]. …”

Section: Peripheral Nerve Sheath Tumorsmentioning

confidence: 93%

Methodology and indications for high-resolution sonography (HRUS) of the nerves

Böhm¹

2015

fmpcr

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A -study Design, B -Data Collection, C -statistical Analysis, D -Data Interpretation, E -manuscript Preparation, F -Literature search, G -funds Collection Imaging-techniques of the peripheral nervous system such as high-resolution ultrasonography (hRUs) and mR--neurography are increasingly utilized worldwide for the investigation of peripheral nerve disorders. Both methods provide important informations about the morphology of the peripheral nerves, nerve-roots and the brachial plexus. The low cost in comparison with mR-neurography, possibility of a dynamic examination, assessing long nerves segments in a short time, bedside-availability, non-invasivity and the possibility of Us-guided nerves blocks and therapies make hRUs the ideal imaging tool in peripheral nerve diseases. hRUs allows the detection of alterations even in single fascicles and the perineurium and provides important additional information on morphological aspects and etiology of peripheral nerve pathology. It allows a precise localisation of the nerve lesion and provides information about the underlying etiology. hRUs is especially useful in detecting structural abnormalities of the nerves caused by compression, trauma, tumor, inflammation and a variety of non-neoplastic conditions, including nerve torsion. hRUs can be helpful in operation planning, intraoperative management and in detecting the causes of failed operations. This review presents an overview about the most relevant neurological applications of hRUs taking into account the personal experiences of the author. Key words: high-resolution ultrasound, peripheral nerve entrapment-syndrome, injuries of the peripheral nerves, tumors of the peripheral nerve sheath, polyneuropathy, nerve torsion.Techniki obrazowe, jak wysokorozdzielcza ultrasonografia (high-resolution ultrasonography, hRUs) oraz neurografia rezonansu magnetycznego, znajdują coraz szersze zastosowanie w diagnostyce chorób obwodowego układu nerwowego. obie metody dostarczają istotnych informacji o morfologii nerwów obwodowych, korzeni rdzeniowych oraz splotu barkowego. Zalety hRUs, czyniące z tej metody idealne narzędzie do obrazowania nerwów obwodowych, to: niski koszt (w porównaniu z neurografią rezonansu magnetycznego), dynamiczna ocena morfologiczna, możliwość oceny długich odcinków nerwów w krótkim czasie, możliwość diagnostyki przy łóżku pacjenta, nieinwazyjność oraz możliwość nawigacji przy blokadach i innych zabiegach. W obecnym stopniu zaawansowania technologicznego hRUs pozwala wykryć zmiany nawet w pojedynczych włóknach nerwowych, w onerwiu i w nanerwiu oraz przynosi istotną, dodatkową informację o zmianach morfologicznych i etiologii chorób nerwów obwodowych. hRUs umożliwia ponadto precyzyjną lokalizację uszkodzenia nerwu i dostarcza informacji o jego etiologii. szczególną przydatność metoda wykazuje w wykrywaniu strukturalnych zmian, powodowanych przez ucisk, jak w zespole cieśni nadgarstka oraz w uszkodzeniu nerwu łokciowego w rowku, przez uraz, guz, zapalenie oraz innego typu uszkodzenia jak skręcenie. metoda pom...

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High-resolution ultrasound of peripheral neurogenic tumors

Cited by 115 publications

References 41 publications

High-resolution ultrasonography and diffusion tensor tractography map normal nerve fascicles in relation to schwannoma tissue prior to resection

High-resolution ultrasonography and diffusion tensor tractography map normal nerve fascicles in relation to schwannoma tissue prior to resection

Preoperative evaluation of peripheral nerve injuries: What is the place for ultrasound?

Methodology and indications for high-resolution sonography (HRUS) of the nerves

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