[The Compression Syndrome of Lumbar Arteries - Case Report of a Rare Disease Pattern]. / Das Kompressionssyndrom der Lumbalarterien - Kasuistik eines seltenen Krankheitsbilds.

STUDY DESIGN: We present a monocentric analysis of the lumbar artery compression syndrome (LACS) in the form of a case report. OBJECTIVES: Literature information was collected about the symptoms, diagnosis and treatment of this rare disorder in the context of the existing data. METHODS: The current medical literature includes only one report about three cases of LACS, collected over 20 years in France and Germany. We compared these cases with the experience of the European Vascular Center Aachen-Maastricht. RESULTS: The symptoms of this rare disorder are dominated by reversible, motion-dependent paralysis of the legs. Compression of the right lumbar arteries by muscular fibres or connective tissue is a fundamental cause. CONCLUSION: Surgical treatment, which means decompression of the lumbar arteries via a thoracolaparotomy, is an appropriate therapy with few complications and good long-term results.

Complex arteriovenous fistulas at C1 causing hematomyelia through aneurysmal rupture of a feeder from the anterior spinal artery.

A 64-year-old woman presented with left occipital headache and right dissociated sensory loss due to hematomyelia on the left ventral side of C1 caused by rupture of an aneurysm on one of the feeders extending from the anterior spinal artery to complex epidural or dural and intradural arteriovenous fistulas (AVFs). Branches from the left occipital and ascending pharyngeal arteries and those from the left C2 radicular, left posterior spinal and anterior spinal arteries formed these multiple shunts, linking with a common venous drain flowing into the right petrosal vein. Surgical interception of all the shunts was achieved, making it unnecessary to directly treat the aneurysm in the spinal cord. The feeders, aneurysm and AVFs were not visualized on postoperative angiography, and the patient returned to a normal working life.

Anterior spinal artery syndrome in a 13-year-old boy 8 days after taekwondo-fight: vascular obliteration due to vessel lesion or thrombophilia?

BACKGROUND: Spinal cord infarction from anterior spinal cord syndrome (ASAS) in children is a rare pathology and comprises the following clinical symptoms: sudden onset of pain and flaccid para- or tetraparesis, bladder dysfunction, and dissociated sensory loss with impairment of pain and temperature perception. Deep sensibility is not affected. PATIENT: A 13-year-old male patient presented to our emergency department with a bilateral leg weakness. 1 week before, he had suffered a leg strain in a Taekwondo-fight from which he recovered completely. On physical examination our patient's legs were in flaccid paralysis, tone was decreased and he had dissociated sensory loss and acute retention of urine. Blood count, ESR, electrolytes, serologic tests for various pathogens and CSF examination all were normal. However, tests for values of an acute endothelial lesion were increased and he was a homozygous carrier of MTHFR-polymorphism. MRI performed on the day of admission was normal but showed dramatic changes 2 days later with increased signal intensity in the ventral aspect of the spinal cord, characteristic for an ASAS. Treatment included highdose methylprednisolone, a suprapubic bladder catheter, sufficient anticoagulation and a rapid transfer to a rehabilitation centre. DISCUSSION: We assume that a combination of the patient's prothrombotic risk factor (MTHFR-polymorphism with elevated homocysteine levels) and his trauma in the taekwondo-fight with consecutive vessel injury caused an occlusion of the artery by late emboli or a growing thrombus.

Occlusion of the artery of Adamkiewicz after hip and knee arthroplasty.

The artery of Adamkiewicz is the most significant tributary of the anterior spinal artery in the midthoracic region; the occlusion of this artery results in a well-described phenomenon consisting of paraplegia with loss of the sensation of pain, temperature, and touch as well as loss of sphincter control. Proprioception and vibration sense are typically preserved. Although this phenomenon has been associated with several surgeries as well as preexisting aortic abnormalities, the literature thus far has not reported this as a complication of hip or knee arthroplasty. Two case histories are presented.

Neurological symptoms after a provocative dive: spinal DCS or anterior spinal artery syndrome?

Reported here is a 37-yr-old professional diving instructor who had developed complaints of back pain and weakness in the lower extremities after diving. He was eventually diagnosed as having spinal cord decompression sickness along with a likely diagnosis of anterior spinal artery (artery of Adamkiewicz) syndrome. Additionally, since the transthoracic echocardiography revealed patent foramen ovale, we hypothesized that it might have been a potential route for gas bubbles to occlude the anterior spinal artery in this diver.

Spinal cord infarction post cardiac arrest in STEMI: A potential complication of intra-aortic balloon pump use.

Intra-aortic balloon pump (IABP) is commonly used as a cardiac assist device in various clinical situations: cardiogenic shock, mechanical complications of acute myocardial infarction, high risk percutaneous coronary interventions, coronary artery bypass graft surgery and refractory unstable angina and ventricular arrhythmias as bridge to therapy. Although current data support its safety, there is limited or no support for its efficacy. We present the case of spinal cord infarction after IABP use in a patient who presented with ST elevation myocardial infarction and cardiac arrest and we discuss the potential mechanism of such a devastating complication.

Acute arm paresis with cervical spondylosis: three case reports.

BACKGROUND: The mild type of anterior spinal artery syndrome (ASAS) is characterized by motor loss with an absent or insignificant sensory deficit due to a disturbance in the blood supply to the anterior horn of the spinal cord. The clinical symptoms of cervical spondylotic amyotrophy (CSA) are motor loss or atrophy with an absent or insignificant sensory deficit or a long tract sign; however, the pathophysiology has not been clarified. METHODS: Three patients who suffered from palsy of the deltoid and biceps brachii are presented. Magnetic resonance imaging confirmed the intrinsic cord disease as the cause of the paresis. We measured the central motor conduction time (CMCT) and the latencies of the tendon reflex (T waves) of the biceps and triceps and those of the F waves of the abductor pollicis brevis and abductor digiti minimi before, 2 weeks after, and 3 months after starting intravenous injections of prostaglandin E(1) (PGE(1)). RESULTS: In these 3 cases, restoration of muscle strength began after starting injection of PGE(1). The electrophysiologic diagnosis revealed a disturbance of the motor conduction, in the CMCT and the latencies of the T waves, in the paretic muscle, which is more severe than that in other muscles. The radiological diagnosis suggested damage in the spinal cord. Improvements in the disturbance of the motor conduction and those of symptoms were parallel. CONCLUSION: From symptomatologic or radiological viewpoints, it is difficult to differentiate CSA from ASAS with cervical spondylosis. This suggests that there have been patients with ASAS whom we have diagnosed as CSA, and we may add administration of PGE(1) to the treatment for the patients with CSA. The present 3 patients showed improvement of muscle strength after starting injections of PGE(1). Although this improvement was measured by an electrophysiologic method, the mechanisms of PGE(1) require further study.

[The value of diffusion magnetic resonance imaging in diagnosing infarction of the anterior spinal artery]. / Utilidad de la resonancia magnética de difusión en el diagnóstico de infarto de la arteria espinal anterior.

INTRODUCTION: The diagnosis of ischemic lesions affecting the spinal cord is sometimes difficult to confirm using conventional magnetic resonance imaging (MRI) techniques, and this makes it necessary to use those currently available to their full extent and also to search for new ones. CASE REPORT: We report the case of an 81-year-old male patient who presented symptoms of sudden onset paraparesis, secondary to lesions in the anterior spinal territory and whose diagnosis was reached using conventional spinal cord MRI, and later confirmed with the diffusion imaging technique. Diffusion MRI in the spinal cord territory, as well as in the brain territory, is a very interesting first choice technique when an ischemic pathology is suspected. Using only T2-weighted images does not allow acute ischemic lesions to be distinguished from chronic lesions; likewise, intramedullary T2 hyperintensity and standard DWI (Diffusion Weighted Imaging) is not specific to acute spinal ischemia, and the determination of the apparent diffusion coefficient in the lesion may help in the differential diagnosis of diseases affecting the spinal cord. CONCLUSIONS: Including diffusion RMI techniques in the study protocols in cases of ischemic spinal cord pathologies is indispensable today if we hope to reach a fast and correct diagnosis.

[A neonatal case of anterior spinal artery syndrome presenting with bilateral arm paresis].

Anterior spinal artery syndrome is rare in children, especially in neonates. We present a girl with hydrops fetalis and hypothyroidism who developed flaccid paresis of both arms in the neonatal period (around day 25). MRI of the spine performed on day 52 revealed atrophic changes at C5-Th1 without Gd-DTPA-induced enhancement. Nerve conduction studies were also helpful in the diagnosis;in the upper limbs, motor potential was not elicited, while sensory nerve conduction velocity was normal. These clinical and laboratory findings suggested an atypical case of anterior spinal artery syndrome.

A rare case of aortic tube graft occlusion 35 years after coarctectomy.

A 52-year-old male with a history of repair of aortic coarctation by prosthetic tube graft replacement 35-years ago developed anterior spinal artery syndrome caused by acute functional occlusion of the aorta at the repair site where pseudoaneurysm formation was observed. The patient was rescued by an emergency axillofemoral bypass, and residual hypertension in upper limbs was improved by elective ascending aorta-descending aorta bypass grafting.

Combination of infarctions in the posterior inferior cerebellar artery and anterior spinal artery territories.

After an episode of vasodilator-induced systemic hypotension, a 75-year-old man developed ocular lateropulsion to the right, left-side-dominant quadriparesis, loss of superficial sensation below C4 dermatome level, and anuresis. Magnetic resonance imaging (MRI) showed infarcts in the right cerebellar hemisphere (posterior inferior cerebellar artery territory) and the upper cervical cord (anterior spinal artery territory); the combination of posterior inferior cerebellar artery (PICA) and anterior spinal artery (ASA) infarcts has not been reported previously. Angiography revealed severe stenosis in the bilateral vertebral arteries. Hemodynamic hypoperfusion of the stenotic vertebral arteries may cause this unusual combination.

Anterior spinal artery syndrome in an adolescent with protein S deficiency.

The diagnosis of anterior spinal artery syndrome can be made with high accuracy by thorough clinical examination in combination with typical magnetic resonance imaging findings. Sudden onset of tetra- or paraparesis and dissociated sensory loss with bladder dysfunction are the leading clinical signs. We discuss clinical and radiologic findings in an adolescent presenting with anterior spinal artery syndrome. The laboratory results showed a hereditary protein S deficiency.

Anterior spinal artery syndrome after aortic surgery in a child.

Anterior spinal artery syndrome is rare in children. In adults, where it is observed most frequently after resection of thoracoabdominal aortic aneurysms, spinal magnetic resonance imaging is considered the first-line investigation to confirm the clinical diagnosis. A 3-year-old male who presented with this syndrome after palliative cardiac surgery for a complex cardiac malformation associated with aortic coarctation is presented. Clinical diagnosis of anterior horn cell impairment below the L2 level was confirmed by electromyography and F-wave studies. Sparing of dorsal sensory tracts was documented by normal somatosensory-evoked potentials, which confirmed the anterior localization of the lesion. Spinal magnetic resonance imaging performed on day 15 and day 105 after surgery was normal. Neurologic deficits, including flaccid paraplegia, remained stable except for the reappearance of patellar reflexes on day 83. Neurophysiologic conduction studies were consistent with lower motoneuron loss. In this patient, magnetic resonance imaging was less sensitive in demonstrating spinal cord lesion than clinical neurophysiology. Somatosensory-evoked potentials failed to detect the insult. Prevention may therefore require other neurophysiologic monitoring techniques.

Postoperative epidural analgesia and possible transient anterior spinal artery syndrome.

BACKGROUND AND OBJECTIVE: We present an unusual complication of epidural analgesia used to facilitate postoperative pain relief while allowing mobilization of the patient. CASE REPORT: A 65-year-old woman with a history of chronic obstructive pulmonary disease, atherosclerotic cardiovascular disease, chronic renal failure, and degenerative vertebral anatomy underwent resection of the left ureter due to obstructing tumor. The day following surgery, mobilization to an armchair was started, followed by a decrease in blood pressure. Soon after, flaccid paralysis with sparing of sensory functions, consistent with anterior spinal artery syndrome (ASAS), was diagnosed. CONCLUSIONS: This complication should be taken into account, especially in patients at risk, when considering epidural analgesia techniques in the postoperative period. Reg Anesth Pain Med 2001;26:274-277.

Anterior spinal artery syndrome after infrarenal abdominal aortic surgery.

BACKGROUND: Neurological complications such as paraplegia or paraparesis due to spinal cord ischemia has been an unpredictable, devastating event after infrarenal abdominal aortic surgery. The aim of our study is to focus the importance of this entity and in this connection to review the vascular anatomy of the spinal cord, incidence and etiology of spinal cord ischemia, methods of prevention, and management of the patient. METHODS: Eight patients were identified with spinal cord ischemia manifested by paraplegia or paraparesis after 1331 abdominal aortic operations. All the patients who had spinal cord ischemia were examined for risk factors. RESULTS: Three anterior spinal artery syndrome neurological recovery occurred but 5 of them remained unchanged. Two patients died within 30 days of operation. CONCLUSIONS: Complete paraplegia due to ischemic spinal cord injury was thought to be caused by interruption of critical collateral blood supply to the spinal cord. For this reason avoidance of prolonged aortic cross clamp time, hypotension, and its associated low flow to the spinal cord, paying attention to prevent atheromatous embolization of Adamkiewicz artery and pelvic circulation can prevent this complication. If the greater medullary artery is anomalously low from the anatomic localization the blood supply of the cord may be inadequate, so this complication cannot be avoided.

Thrombolysis in anterior spinal artery syndrome.

Anterior spinal artery syndrome (ASAS) is often a devastating spinal stroke occurring when the anterior spinal artery or one of its supplying anterior medullary arteries are occluded. The most common causes are arteriosclerosis, dissection of the abdominal aorta, cardiac embolism and degenerative spine disease, and the major risk factors are smoking, hypertension, diabetes and hypercholesterolaemia. The treatment has generally been supportive. We believe thrombolysis should be considered in the acute phase of this condition, and present a case with ASAS who experienced partial recovery after treatment given 4.5 h after symptom onset.

Anterior spinal cord syndrome in a patient with Behçet's disease.

Although neurological involvement in Behçet's disease is not so uncommon, isolated spinal cord disease is quite rare and reported to be observed in about 2% of all cases with neurological involvement. Here we report a Behçet's patient with spinal cord disease presented with anterior spinal cord syndrome. This rare syndrome is caused by hypoperfusion of the anterior spinal artery and to our knowledge has not been previously reported in patients with Behçet's disease. This report defines the characteristic clinical features of this entity and emphasizes the importance of early immunosuppressive treatment and initiation of rehabilitation.