1/70. Suprascapular neuropathy related to a glenohumeral joint cyst.A man with shoulder pain and complaints of weakness had examination findings consistent with a suprascapular neuropathy with predominant involvement of the infraspinatus muscle. Electrodiagnostic studies confirmed an axon-loss suprascapular neuropathy with greater involvement of the infraspinatus muscle. magnetic resonance imaging (MRI) demonstrated a large ganglion cyst originating from the glenohumeral joint. The clinical, electrodiagnostic, and radiologic evaluation of suprascapular neuropathy is discussed.- - - - - - - - - - ranking = 1keywords = ganglion (Clic here for more details about this article) |
2/70. Extracranial vertebral artery dissection causing cervical root lesion.The authors report an unusual manifestation of extracranial vertebral artery dissection (VAD), presenting with a predominantly motor radicular manifestation. Cervical magnetic resonance imaging (MRI) revealed the intramural hematoma in the dissected vessel wall, compressing mainly the segmental motor root and, to a lesser degree, the sensory ganglion. In the digital subtraction angiography (DSA), a circumscribed narrowing of the incriminated vessel was demonstrated. color-coded Duplex imaging (CDDI) revealed complete recanalization after a few days of anticoagulation treatment. Complete neurologic recovery was seen after 3 months. Considering the MRI data, the likely pathogenetic mechanism was compression of the nerve root by the intramural hematoma. The synopsis with similar cases in the literature points to the characteristic features, i.e., the association of neck pain with radicular motor deficit and the absence of degenerative disk disease. The respective syndrome should raise the suspicion of vertebral artery dissection, especially in young individuals.- - - - - - - - - - ranking = 1keywords = ganglion (Clic here for more details about this article) |
3/70. Errors in diagnosis of polyneuropathy: three cases of chronic lumbosacral root impairment.In the last years very precise diagnostic investigations have been introduced to allow accurate diagnosis of pathologies affecting the major part of peripheral nerves; nevertheless, some avoidable misdiagnosis still occurs. For instance, the neurophysiological pattern observed in chronic compression of nerve roots may mimic an axonal polyneuropathy, especially when compression occurs in post-ganglionic tract of dorsal root (in this case sensory nerve conduction studies show decreased or absent response). A clinical-neurophysiological dissociation may be noted in cases with pre-ganglionic impairment of dorsal root (clinical sensory deficit in presence of normal amplitude of sensory response). During the past two years we observed 3 cases with diagnosis of polyneuropathy that, after further studies, appeared affected by severe chronic compression of lumbo-sacral nerve roots. Our data suggest that in those cases with suspected polyneuropathy, in which the neurophysiological picture is characterized by the exclusive axonal (and myelinic) involvement of motor and/or sensory peripheral nerve of lower limbs, neuroimaging of radicular structures must be performed. These further investigations may avoid severe and irreversible damage to neural tissues.- - - - - - - - - - ranking = 2keywords = ganglion (Clic here for more details about this article) |
4/70. Schwannoma of the suprascapular nerve presenting with atypical neuralgia: case report and review of the literature.Compressive lesions of the suprascapular nerve produce weakness and atrophy of the supra- and infraspinatus muscles and a poorly defined aching pain along the posterior aspect of the shoulder joint and the adjacent scapula. Entrapment neuropathy of the suprascapular nerve is fairly common whereas tumorous lesions are rare; among the latter ganglion cysts are frequently seen. An isolated solitary schwannoma of the suprascapular nerve presenting with atypical neuralgic pain is exceptional. The location of a schwannoma under the firm deep cervical fascia in the posterior triangle of the neck is implicated in the genesis of neuralgic pains mimicking the suprascapular entrapment syndrome. One such case is reported with discussion of the relevant clinical features.- - - - - - - - - - ranking = 1keywords = ganglion (Clic here for more details about this article) |
5/70. Distal ulnar nerve compression caused by ganglion formation in the loge de Guyon. Case report.The passage of the ulnar nerve through the loge de Guyon at the volar aspect of the wrist is defined and described anatomically. Two cases with symptoms of nerve compression at this level are presented and the syndrome discussed.- - - - - - - - - - ranking = 4keywords = ganglion (Clic here for more details about this article) |
6/70. Acute isolated suprascapular nerve palsy limited to the infraspinatus muscle: a case report.Suprascapular nerve palsy resulting in isolated weakness of the infraspinatus muscle is subtle at its onset and must be differentiated from cervical radiculopathy or bone and joint diseases of the shoulder, especially in the presence of pain. The literature suggests an association of cumulative trauma with ganglionic cyst formation and entrapment neuropathy of the suprascapular nerve in the spinoglenoid notch. Here we present clinical, electrodiagnostic, and radiologic features in a young patient who presented with a 2-week history of isolated, painless weakness of the right shoulder. His electromyography showed acute denervation of the right infraspinatus muscle. magnetic resonance imaging revealed a ganglionic cyst in the spinoglenoid fossa and edema in the infraspinatus muscle consistent with denervation. The patient recovered after removal of the cyst.- - - - - - - - - - ranking = 2keywords = ganglion (Clic here for more details about this article) |
7/70. Enlarged spinoglenoid notch veins causing suprascapular nerve compression.OBJECTIVE: To report the magnetic resonance (MR) imaging findings of enlarged veins in the spinoglenoid notch as a cause of suprascapular nerve compression. DESIGN AND patients: Six patients presented to MR imaging for evaluation of chronic shoulder pain. Clinical information and MR imaging studies were reviewed. The spinoglenoid notch vascular structures were compared with measurements made in 10 age-matched controls. RESULTS: Spinoglenoid notch vascular structures measured in 10 asymptomatic age-matched control patients ranged from 1 to 4 mm in diameter with an average of 2.2 mm. The six study patients had vascular structures that ranged from 6 to 10 mm in diameter with an average of 8.4 mm. atrophy and fatty infiltration of the infraspinatus muscle was noted as an associated finding at MR imaging in all six patients. Surgery was performed in three of the six patients, at which time a venous varix was identified in the spinoglenoid notch in all three patients. CONCLUSION: We describe distended veins in the spinoglenoid notch. These may be readily apparent at MR imaging and should be distinguished from paralabral ganglion cysts compressing the suprascapular nerve in the absence of labral tears, especially if percutaneous aspiration of a ganglion cyst is entertained.- - - - - - - - - - ranking = 2keywords = ganglion (Clic here for more details about this article) |
8/70. Infantile hemifacial spasm.A 6-week-old infant had recurrent contractions of the facial musculature on the left side, which continued throughout early childhood. Surgical exploration at 5 1/2 years of age revealed a ganglioneuroma of the fourth ventricle. hemifacial spasm (HFS) in infancy and childhood suggests the possibility of serious intracranial pathologic findings.- - - - - - - - - - ranking = 1keywords = ganglion (Clic here for more details about this article) |
9/70. Suprascapular nerve entrapment secondary to a lipoma.Many causes of suprascapular nerve entrapment have been described including a small spinoglenoid notch, a tight ligament, boney spurs, and ganglion cysts. In the current patient, suprascapular nerve entrapment was caused by a lipoma in the suprascapular notch. The patient presented with painful shoulder motion that could have been attributed to rotator cuff and acromioclavicular joint disease. However, magnetic resonance imaging and electromyography were consistent with suprascapular nerve entrapment. Treatment of the rotator cuff disease and excision of the lipoma led to resolution of the patient's symptoms. This case is presented as an unusual cause of suprascapular nerve entrapment with a review of its course and anatomy.- - - - - - - - - - ranking = 1keywords = ganglion (Clic here for more details about this article) |
10/70. Pelvic presentation of a hip joint ganglion: a case report.ganglia may be found near any joint. The hip joint is one location where these lesions have been reported. In most instances the ganglia found around the hip are small, deep-seated, and not palpable. Palpable ganglia are commonly larger and present as a groin mass. We report a ganglion cyst that was not palpable due to its intrapelvic location.- - - - - - - - - - ranking = 5keywords = ganglion (Clic here for more details about this article) |
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