Conus infarction after non-guided transcoccygeal ganglion impar block using particulate steroid for chronic coccydynia.

Introduction: Ganglion impar block (GIB) is a well-recognised treatment for chronic coccydynia. Several side effects have previously been described with this procedure, including transient motor dysfunction, bowel, bladder, and sexual dysfunction, neuritis, rectal perforation, impingement of the sciatic nerve, cauda equina syndrome, and infection. Case presentation: We describe the first report of imaging-documented conus infarction after an unguided-GIB performed in theatre using particulate steroids for a 17-year-old patient with coccydynia. Immediately post-GIB, patient developed transient neurological deficits in her lower limbs of inability to mobilise her legs that lasted for 24 h. These include back and leg pain, decreased power and movement, increased tone, brisk reflexes, reduced light touch sensation and proprioception of legs up to the T10 level. Urgent MRI spine showed intramedullary hyperintense signal within the conus and mild restricted diffusion on the distal cord and conus, suggestive of an acute conus infarction. On follow-up, the GIB did not result in symptom improvement of coccydynia and there was persistent altered sensation of her legs. Discussion: Various approaches of ganglion impar block have been described and performed in the past with different imaging techniques and injectants. A few cases of unusual neurological complications have been reported with the use of epidural steroid injections and ganglion impar block. Clinicians should be aware of the possible neurological complications following ganglion impar blocks and the risk of inadvertent intravascular injection of particulate steroids can potentially to be minimised by using imaging guidance.

Acquired Chiari malformation following spinal cord injury-a case series.

Introduction: Chiari malformation is characterized by caudal descent of the cerebellar tonsils through the foramen magnum. Acquired Chiari malformations (ACM) have previously been described after a variety of pathologies including lumbar puncture, cerebrospinal fluid (CSF) drainage, lumboperitoneal shunts, and conditions causing craniocephalic disproportion. Case presentation: We present four cases of ACM following spinal cord injury (SCI), which has not previously been described in the literature. Discussion: ACM is rare and typically associated with abnormalities in CSF pressure or space-occupying lesions. This case series describes the potential association of SCI with ACM. We discuss the imaging findings and clinical management of these patients. Early recognition and intervention may be important to prevent progressive neurology in this vulnerable patient group.

Thromboembolism in the Sub-Acute Phase of Spinal Cord Injury: A Systematic Review of the Literature.

To review the evidence of thromboembolism incidence and prophylaxis in the sub-acute phase of spinal cord injury (SCI) 3-6 months post injury. All observational and experimental studies with any length of follow-up and no limitations on language or publication status published up to March 2015 were included. Two review authors independently selected trials for inclusion and extracted data. Outcomes studied were incidence of pulmonary embolism (PE) and deep vein thrombosis (DVT) in the sub-acute phase of SCI. The secondary outcome was type of thromboprophylaxis. Our search identified 4305 references and seven articles that met the inclusion criteria. Five papers reported PE events and three papers reported DVT events in the sub-acute phase of SCI. Studies were heterogeneous in populations, design and outcome reporting, therefore a meta-analysis was not performed. The included studies report a PE incidence of 0.5%-6.0% and DVT incidence of 2.0%-8.0% in the sub-acute phase of SCI. Thromboprophylaxis was poorly reported. Spinal patients continue to have a significant risk of PE and DVT after the acute period of their injury. Clinicians are advised to have a low threshold for suspecting venous thromboembolism in the sub-acute phase of SCI and to continue prophylactic anticoagulation therapy for a longer period of time.

Review: indications for interventional radiology in the management of patients with spinal cord injuries.

OBJECTIVES: To outline a range of minimally invasive image-guided procedures that benefit spinal cord-injured patients and may expedite clinical care. STUDY DESIGN: Pictorial review. RESULTS/CONCLUSIONS: Image-guided procedures have made a significant impact in medical management in many specialties. These techniques continue to evolve rapidly and afford opportunities to reduce patient morbidity and in-patient length of stay.

Interobserver agreement of magnetic resonance imaging signs of osteomyelitis in pelvic pressure ulcers in patients with spinal cord injury.

OBJECTIVE: To examine the interobserver reliability of magnetic resonance imaging (MRI) signs of osteomyelitis in complex chronic pressure ulcers in patients with spinal cord injury (SCI). DESIGN: Retrospective review study. SETTING: Specialist SCI rehabilitation center. PARTICIPANTS: Adult patients with SCI and pressure ulceration investigated with MRI. INTERVENTIONS: Analysis of MRI examinations and clinical records collected over a 4-year period. Images were independently assessed by 2 experienced radiologists for osteomyelitis based on assigned predictive indicators including cortical bone erosion, soft tissue edema, deep collections, heterotopic new bone, hip effusion, and abnormal signal change of the marrow. MAIN OUTCOME MEASURES: Interobserver agreement for indicative MRI signs of osteomyelitis in complex pressure ulcers. RESULTS: Thirty-seven patients underwent 41 MRI scans. Concordance for marrow edema was 71% on both short tau inversion recovery and T1-weighted sequences, and for cortical erosion was 85%. CONCLUSIONS: For the assessment of pelvic osteomyelitis related to pressure ulcers, the T1-weighted MRI signal for marrow edema and cortical erosion has strong interobserver agreement.

Magnetic resonance imaging of pressure sores in spinal cord injured patients: accuracy in predicting osteomyelitis.

OBJECTIVE: Identify key magnetic resonance imaging (MRI) features that have a significant correlation with osteomyelitis of pressure ulcers in spinal injury patients. DESIGN: Retrospective review study. PARTICIPANTS: Adult patients admitted to the National Spinal Injuries Centre with spinal cord injury (SCI) and signs of pressure ulceration investigated with MRI. METHODS: Analysis of MRI examinations and clinical records collected over a 4-year period. Images were independently assessed by 2 experienced radiologists for osteomyelitis based on assigned predictive indicators including cortical bone erosion, soft tissue edema, deep collections, heterotopic new bone, hip effusion, and abnormal signal change of the marrow. RESULTS: Thirty-seven patients underwent 41 MRI scans. The prevalence of osteomyelitis was highly correlated with cortical bone erosion (r = 0.84) and abnormal bone marrow changes on T1-weighted images (r = 0.82).

An urgent access neurovascular clinic: audit of timeliness.

This study aimed to evaluate timeliness of an outpatient urgent access neurovascular clinic in a district general hospital setting through an audit of delay from event to completion of evaluation following transient ischaemic attack (TIA) or minor stroke. Participants included those referred for evaluation of suspected TIA or minor stroke. The median delay from event to completion was 16 days, with 45% seen within two weeks of symptom onset, and 15% within one week of symptom onset. A weekly TIA clinic is not capable of achieving the National Clinical Guidelines for Stroke recommendation for evaluation within one week of symptoms. This audit supports the National Stroke Strategy recommendation for immediate evaluation of patients presenting with a recent TIA or minor stroke.

Diffusion-weighted MRI in 300 patients presenting late with subacute transient ischemic attack or minor stroke.

BACKGROUND AND PURPOSE: Many patients with transient ischemic attack (TIA) or minor stroke present to medical attention after a delay of several days or weeks, at which time it may be more difficult to obtain a clear history and clinical signs may have resolved. Because ischemic lesions on diffusion-weighted MRI (DWI) often persist for several weeks, we hypothesized that adding DWI to a standard protocol with T2-weighted imaging might be useful in the management of patients presenting late. METHODS: We studied consecutive patients with TIA or minor stroke presenting > or =3 days after the event. Two independent observers recorded the presence or absence of recent ischemic lesions on 2 different occasions, first with the T2 scan only, and second with T2 and DWI. Each time, with the aid of a written clinical summary, the observers recorded their diagnosis and proposed management. RESULTS: 300 patients (159 men) were scanned at a median of 17 (interquartile range=10 to 23) days after symptom onset. DWI showed a high signal lesion in 114/164 (70%) minor strokes versus 17/136 (13%) TIAs (P<0.0001). The presence of high-signal lesions on DWI decreased nonlinearly with time since symptom onset (P<0.0001) and increased with National Institutes of Health Stroke Score (P=0.038) and with age (P=0.01). In 90/206 (43.7%) patients with 1 or multiple lesions on T2, DWI helped to clarify whether these were related to a recent ischemic event (79 [48%] strokes; 11 [31%] TIAs). Compared with T2 alone, DWI provided additional information in 108 (36%) patients (91 [56%] strokes and 17 [13%] TIAs), such as clarification of clinical diagnosis (18 patients, 6%) or vascular territory (28 patients, 9.3%), which was considered likely to influence management in 42 (14%) patients (32 [19%] strokes; 10 [7.4%] TIAs). CONCLUSIONS: The clinically useful information available from DWI provides a further justification for an MRI-based imaging protocol in patients with subacute TIA or minor stroke.

Combined helical computed tomographic pulmonary angiography and lung perfusion scintigraphy for investigating acute pulmonary embolism.

AIM: To evaluate a diagnostic protocol incorporating helical computed tomographic pulmonary angiography (CTPA) and lung perfusion scintigraphy in the detection or exclusion of pulmonary embolism (PE) in routine clinical practice. MATERIALS AND METHODS: A prospective observational study of 808 consecutive patients with suspected acute PE was undertaken over a 23-month period. Twenty-nine cases who failed to follow the protocol were excluded, leaving 779 cases to be reviewed. The three main outcome measures were negative perfusion scintigraphy, positive CTPA and other significant abnormalities demonstrated on CT. RESULTS: Two hundred and thirty-one (30%) had negative perfusion scintigraphy and no further investigation. CTPA was performed in 548 (70%) and PE confirmed in 193 (25% of all patients). Other significant abnormalities were demonstrated in 25 (3%). CTPA was technically inadequate in 15 (2%). CONCLUSIONS: A confident conclusion was achieved in 449 cases (58%), with PE excluded in 231 (30%), proved in 193 (25%), and relevant alternative abnormalities found in 25 (3%). This protocol using both perfusion scintigraphy and CTPA is practical and more effective than either investigation alone.

Consultant assessment and appraisal: an outline in practice.

AIMS: To demonstrate a practical method to address new Department of Health requirements for assessment and appraisal. METHOD: This process was developed within the department to incorporate workload, clinical incidents and 360 degrees questionnaires to assess performance and working with departmental staff as preliminaries to an appraisal interview. CONCLUSION: Review of 2 years' process has resulted in minor amendments but there was general agreement that the parameters encompassed were practical and useful.