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Yang CC, Lee MH, Liu CY, Lin MH, Yang YH, Chen KT, Huang TY. The IFSD Score-A Practical Prognostic Model for Invasive Fungal Spondylodiscitis. J Fungi (Basel) 2024; 10:61. [PMID: 38248971 PMCID: PMC10819940 DOI: 10.3390/jof10010061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 01/05/2024] [Accepted: 01/11/2024] [Indexed: 01/23/2024] Open
Abstract
Objectives: Invasive fungal spondylodiscitis (IFSD) is rare and could be lethal in certain circumstances. The previous literature revealed limited data concerning its outcomes. This study aimed to establish a risk-scoring system to predict the one-year mortality rate of this disease. Methods: A total of 53 patients from a multi-centered database in Taiwan were included in this study. All the clinicopathological and laboratory data were retrospectively analyzed. Variables strongly related to one-year mortality were identified using a multivariate Cox proportional hazards model. A receiver operating characteristic (ROC) curve was used to express the performance of our IFSD scoring model. Results: Five strong predictors were included in the IFSD score: predisposing immunocompromised state, the initial presentation of either radiculopathy or myelopathy, initial laboratory findings of WBC > 12.0 or <0.4 103/µL, hemoglobin < 8 g/dL, and evidence of candidemia. One-year mortality rates for patients with IFSD scores of 0, 1, 2, 3, and 4 were 0%, 16.7%, 56.3%, 72.7%, and 100%, respectively. The area under the curve of the ROC curve was 0.823. Conclusions: We developed a practical scoring model with easily obtained demographic, clinical, and laboratory parameters to predict the probability of one-year mortality in patients with IFSD. However, more large-scale and international validations would be necessary before this scoring model is commonly used.
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Affiliation(s)
- Chao-Chun Yang
- Department of Neurosurgery, Chang Gung Memorial Hospital, Chiayi 61363, Taiwan; (C.-C.Y.); (M.-H.L.); (K.-T.C.)
| | - Ming-Hsueh Lee
- Department of Neurosurgery, Chang Gung Memorial Hospital, Chiayi 61363, Taiwan; (C.-C.Y.); (M.-H.L.); (K.-T.C.)
| | - Chia-Yen Liu
- Health Information and Epidemiology Laboratory, Chang Gung Memorial Hospital, Chiayi 61363, Taiwan; (C.-Y.L.); (M.-H.L.); (Y.-H.Y.)
| | - Meng-Hung Lin
- Health Information and Epidemiology Laboratory, Chang Gung Memorial Hospital, Chiayi 61363, Taiwan; (C.-Y.L.); (M.-H.L.); (Y.-H.Y.)
| | - Yao-Hsu Yang
- Health Information and Epidemiology Laboratory, Chang Gung Memorial Hospital, Chiayi 61363, Taiwan; (C.-Y.L.); (M.-H.L.); (Y.-H.Y.)
- School of Chinese Medicine, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
- Department of Traditional Chinese Medicine, Chang Gung Memorial Hospital, Chiayi 61363, Taiwan
| | - Kuo-Tai Chen
- Department of Neurosurgery, Chang Gung Memorial Hospital, Chiayi 61363, Taiwan; (C.-C.Y.); (M.-H.L.); (K.-T.C.)
| | - Tsung-Yu Huang
- Division of Infectious Diseases, Department of Internal Medicine, Chang Gung Memorial Hospital, Chiayi 61363, Taiwan
- College of Medicine, Chang Gung University, Taoyuan 33303, Taiwan
- Microbiology Research and Treatment Center, Chang Gung Memorial Hospital, Chiayi 61363, Taiwan
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The Diagnostic Performance of Multi-Detector Computed Tomography (MDCT) in Depiction of Acute Spondylodiscitis in an Emergency Department. Tomography 2022; 8:1895-1904. [PMID: 35894025 PMCID: PMC9332551 DOI: 10.3390/tomography8040160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 07/12/2022] [Accepted: 07/24/2022] [Indexed: 11/18/2022] Open
Abstract
Background: The diagnosis of acute spondylodiscitis can be very difficult because clinical onset symptoms are highly variable. The reference examination is MRI, but very often the first diagnostic investigation performed is CT, given its high availability in the acute setting. CT allows rapid evaluation of other alternative diagnoses (e.g., fractures), but scarce literature is available to evaluate the accuracy of CT, and in particular of multi-detector computed tomography (MDCT), in the diagnosis of suspected spondylodiscitis. The aim of our study was to establish MDCT accuracy and how this diagnostic method could help doctors in the depiction of acute spondylodiscitis in an emergency situation by comparing the diagnostic performance of MDCT with MRI, which is the gold standard. Methods: We searched our radiological archive for all MRI examinations of patients who had been studied for a suspicion of acute spondylodiscitis in the period between January 2017 and January 2021 (n = 162). We included only patients who had undergone MDCT examination prior to MRI examination (n = 25). The overall diagnostic value of MDCT was estimated, using MRI as the gold standard. In particular, the aim of our study was to clarify the effectiveness of CT in radiological cases that require immediate intervention (stage of complications). Therefore, the radiologist, faced with a negative CT finding, can suggest an elective (not urgent) MRI with relative serenity and without therapeutic delays. Results: MDCT allowed identification of the presence of acute spondylodiscitis in 13 of 25 patients. Specificity and positive predictive value were 100% for MDCT, while sensitivity and negative predictive value were 68% and 50%, respectively, achieving an overall accuracy of 76%. In addition, MDCT allowed the identification of paravertebral abscesses (92%), fairly pathognomonic lesions of spondylodiscitis pathology. Conclusions: The MDCT allows identification of the presence of acute spondylodiscitis in the Emergency Department (ED) with a satisfactory accuracy. In the case of a positive CT examination, this allows therapy to be started immediately and reduces complications. However, we suggest performing an elective MRI examination in negative cases in which pathological findings are hard to diagnose with CT alone.
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Farahzadi A, Mahmoodzadeh H. Fever of unknown origin as the first presentation of candida vertebral osteomyelitis: A case report. Clin Case Rep 2022; 10:e05582. [PMID: 35356159 PMCID: PMC8943113 DOI: 10.1002/ccr3.5582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 02/07/2022] [Accepted: 02/25/2022] [Indexed: 11/17/2022] Open
Abstract
Candida osteomyelitis is a rare disorder; however, its incidence has drastically risen especially during the last 3 decades. Diagnosis is usually delayed due to nonspecific symptoms. Thus, its management would not be performed at the proper time, which leads to increased morbidity. The optimal management of candida osteomyelitis is not clearly defined but most recommendations advise prolonged antifungal therapy in addition to surgery. Here, we report candida osteomyelitis in a patient with a history of pancreatic adenocarcinoma that presented with prolonged FUO as her first presentation. Fortunately, her symptoms completely resolved after prolonged medical therapy despite delay diagnosis due to her unusual presentation. To the best of our knowledge, it is the first report of candida vertebra osteomyelitis that presents with prolonged FUO as the first presentation.
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Affiliation(s)
- Athena Farahzadi
- Division of Surgical Oncology Cancer institute Tehran University of Medical Sciences Tehran Iran
| | - Habibollah Mahmoodzadeh
- Division of Surgical Oncology Cancer institute Tehran University of Medical Sciences Tehran Iran
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Abstract
The findings on MR imaging of 28 patients with spinal infection and 40 patients with spinal malignant disease were compared. Spinal infections involved one to 4 vertebrae, usually (23/28) 2 vertebrae. The posterior elements were involved with certainty in 26/40 patients with malignancy but in none with infection. In the latter group, the posterior elements might have been involved in 3/28. The intervertebral disk between the infected vertebrae was involved in 26/28 patients and 21/28 had a paravertebral mass. Spinal malignancies affected the vertebrae alone in 19 patients and paravertebral extension was found in 21/40 patients. The intervertebral disk was involved only in one patient with malignancy. The differences in the distribution of the MR findings between spinal infection and spinal malignancy were highly significant (p < 0.001). The highest signal intensity of the infectious lesions on T2-weighted images was equal to or higher than that of the cerebrospinal fluid (CSF) in 26/28 patients. In contrast, the signal intensity of the malignant lesions was hypointense as compared to the CSF in 29/40 patients (p < 0.001). MR is a useful method for differentiating between infection and malignancy in the lower spine; T2-weighted images are especially valuable for differentiation.
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Abstract
Spinal infection may involve the vertebrae, the intervertebral discs, and the adjacent intraspinal and paraspinal soft tissues. It often starts with subtle and insidious clinical signs and symptoms and may development to a debilitating and even life threatening disease. Spinal infections occur with increasing incidence and are nowadays a disease of everyday's practice for physicians treating spinal disorders. Traditionally, conservative treatment consisting of antibiosis and immobilisation is considered the first tier therapy. However, due to a considerably high rate of vertebral column instability or neurological impairment caused by the infected tissue, comprehensive experience with surgical measures have been acquired over the last decades. Thanks to tremendous improvements of surgical implants and techniques, surgical treatment has already begun to challenge conservative treatment to eventually become the first tier therapy for spinal infections in the future. This review seeks to give an overview of epidemiology, pathogenesis, diagnostic evaluation, and current nonsurgical and surgical therapy of spinal infections on the basis of the existing literature, which consists largely of retrospectively acquired data of single-centre experience with sample sizes of less than 100 patients treated with individually defined indications and treatment algorithms, and followed with various outcome parameters.
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Affiliation(s)
- M Stoffel
- Department of Neurosurgery, Klinikum rechts der Isar, Technische Universität Munchen, Munich, Germany
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Isaac Z, Katz JN. Lumbar spine disorders. Rheumatology (Oxford) 2011. [DOI: 10.1016/b978-0-323-06551-1.00069-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Abstract
OBJECTIVE The purposes of this review are to summarize the causes of recurrent pain after percutaneous vertebroplasty and to discuss the incidence, clinical symptoms, risk factors, image findings, treatment and prognosis, and prevention of such pain. CONCLUSION Percutaneous vertebroplasty is widely used to treat patients with symptomatic osteoporotic compression fractures. Although the procedure relieves the pain of the compression fracture, recurrent back pain after percutaneous vertebroplasty is common.
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Abstract
Adult osteomyelitis remains difficult to treat, with considerable morbidity and costs to the health care system. Bacteria reach bone through the bloodstream, from a contiguous focus of infection, from penetrating trauma, or from operative intervention. Bone necrosis begins early, limiting the possibility of eradicating the pathogens, and leading to a chronic condition. Appropriate treatment includes culture-directed antibiotic therapy and operative debridement of all necrotic bone and soft tissue. Treatment often involves a combination of antibiotics. Operative treatment is often staged and includes debridement, dead space management, soft tissue coverage, restoration of blood supply, and stabilization. Clinicians and patients must share a clear understanding of the goals of treatment and the difficulties that may persist after the initial course of therapy or surgical intervention. Chronic pain and recurrence of infection still remain possible even when the acute symptoms of adult osteomyelitis have resolved.
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Affiliation(s)
- Jason H Calhoun
- Department of Orthopaedic Surgery, University of Missouri-Columbia, DC053.00, MC213, Columbia, MO 65212, USA.
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Wang D. Diagnosis of tuberculous vertebral osteomyelitis (TVO) in a developed country and literature review. Spinal Cord 2005; 43:531-42. [PMID: 15838529 DOI: 10.1038/sj.sc.3101753] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
STUDY DESIGN Review of medical and radiological records and literature to study the diagnosis of tuberculous vertebral osteomyelitis (TVO) and the differential diagnosis between TVO and pyogenic vertebral osteomyelitis (PVO). OBJECTIVE To identify the correct criteria for the diagnosis. SETTING National Spinal Injuries Centre, UK. METHODS (1) Medical and radiological records of 10 patients diagnosed as vertebral osteomyelitis and treated elsewhere but later admitted to the NSIC were reviewed retrospectively. (2) Medical literature on vertebral osteomyelitis were reviewed. RESULTS (1) Case review: Before the study, four of the 10 patients TVO had been diagnosed based on positive bacteriology. Of the other six, the diagnosis of PVO had been made in one based on positive blood culture of staphylococcus while in another without any positive result of bacteriology. The diagnosis had been uncertain in four because of negative results of both bacteriology and histology on both tuberculous and pyogenic infection. The author made the diagnosis of TVO in all 10 cases based on clinical manifestations and plain radiographs. Highly raised ESR with moderate rise of or normal WBC in eight cases supported TVO. Computer tomography and magnetic resonance imaging did not contribute to the differential diagnosis. Laminectomy in five patients led to some clinical improvement. The five patients without surgery deteriorated. Two of them died. (2) LITERATURE REVIEW: A total of 188 articles were reviewed. The crucial role of plain radiographs in the diagnosis of TVO and the high incidence of false-negative of tuberculosis in both bacteriological and histological tests were neglected in most articles. Polymerase chain reaction (PCR) was more reliable in diagnosing tuberculosis. CONCLUSION Clinical manifestations, discrepancy between ESR and WBC, plain radiographs and PCR are keys to a correct diagnosis of TVO.
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Affiliation(s)
- D Wang
- The National Spinal Injuries Centre (NSIC), Stoke Mandeville Hospital (SMH), Aylesbury, Buckinghamshire, UK
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Miller DJ, Mejicano GC. Vertebral osteomyelitis due to Candida species: case report and literature review. Clin Infect Dis 2001; 33:523-30. [PMID: 11462190 DOI: 10.1086/322634] [Citation(s) in RCA: 99] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2000] [Revised: 01/29/2001] [Indexed: 11/03/2022] Open
Abstract
Candida species uncommonly cause vertebral osteomyelitis. We present a case of lumbar vertebral osteomyelitis caused by Candida albicans and review 59 cases of candidal vertebral osteomyelitis reported in the literature. The mean age was 50 years, and the lower thoracic or lumbar spine was involved in 95% of patients. Eighty-three percent of patients had back pain for >1 month, 32% presented with fever, and 19% had neurological deficits. The erythrocyte sedimentation rate was elevated in 87% of patients, and blood culture yielded Candida species for 51%. C. albicans was responsible for 62% of cases, Candida tropicalis for 19%, and Candida glabrata for 14%. Risk factors for candidal vertebral osteomyelitis were the presence of a central venous catheter, antibiotic use, immunosuppression, and injection drug use. Medical and surgical therapies were both used, and amphotericin B was the primary antifungal agent. Prognosis was good, with an overall clinical cure rate of 85%.
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Affiliation(s)
- D J Miller
- Section of Infectious Diseases, Department of Medicine, University of Wisconsin Medical School, 600 Highland Ave., Madison, WI 53706, USA.
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Yamada T, Mizuno J, Matsushita Y, Nakagawa H. Two-staged operation for thoracolumbar osteomyelitis following methicillin-resistant staphylococcus aureus infection of a craniectomy wound--case report. Neurol Med Chir (Tokyo) 2001; 41:325-9. [PMID: 11458747 DOI: 10.2176/nmc.41.325] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
A previously healthy 53-year-old woman developed pyogenic vertebral osteomyelitis (PVO) manifesting as progressive lumbago following wound infection of a decompressive craniectomy performed for brain contusion caused by a traffic accident. Magnetic resonance imaging disclosed vertebral osteomyelitis at T-12 and L-1 with paravertebral abscess. Anterior debridement and fusion using autografts were performed at the first operation. Methicillin-resistant Staphylococcus aureus (MRSA) was cultured from the abscess specimen. Antibiotic therapy resolved the infection. Pedicle screw fixation was performed at the second operation. The patient became free from back pain and no recurrence of infection was seen. The diagnosis of PVO is frequently observed or delayed because of the nonspecific symptomatic presentation in the early stage. Coexistent infection or trauma makes early diagnosis more difficult. Indications and timing of instrumentation for the spinal column infected with MRSA is difficult. Two-staged operation with anterior debridement and posterior instrumentation after eradication of the infection is a safe and effective procedure for MRSA vertebral osteomyelitis.
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Affiliation(s)
- T Yamada
- Department of Neurological Surgery, Aichi Medical University, Aichi
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Arnold PM, Baek PN, Bernardi RJ, Luck EA, Larson SJ. Surgical management of nontuberculous thoracic and lumbar vertebral osteomyelitis: report of 33 cases. SURGICAL NEUROLOGY 1997; 47:551-61. [PMID: 9167780 DOI: 10.1016/s0090-3019(96)00242-x] [Citation(s) in RCA: 80] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND Thirty-three patients with nontuberculous pyogenic thoracic and lumbar vertebral osteomyelitis were treated surgically. Indications for surgery were either progression of disease despite adequate antibiotic therapy, neurologic deficit, or both. The most common initial symptom was back pain. Seven patients had diabetes, seven patients were intravenous drug users, two patients were receiving immunosuppressive therapy, and seven patients had a debilitating disease. Eleven had infections elsewhere in their bodies. Prior to surgery organisms were grown from blood in 10 patients and at surgery in 15 patients. METHODS Infection was evident on plain films in all patients, and either a CT scan or MRI was obtained in each. The lateral extracavitary approach was used for resection of granulation tissue and infected bone ventral to the dura. Interbody bone grafts were placed in 19 patients, usually when bone resection was extensive. Posterior instrumentation was placed in 17 patients at a second procedure 10 days-2 weeks following initial operation. Intravenous antibiotics were administered for 4-6 weeks following surgery, and solid fusion was obtained in all patients. RESULTS Neurologic deficit was present in 28 patients prior to surgery and was functionally significant in 18 patients. Of the 11 patients with severe paraparesis, 10 achieved good functional recovery. These patients were able to walk, three with assistance and seven without, and all those who were unable to void regained this ability. CONCLUSIONS Surgical debridement, interbody fusion, and posterior instrumentation is a safe and effective treatment for vertebral osteomyelitis and is indicated when neurologic deficit or bone destruction progress despite adequate antibiotic therapy.
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Affiliation(s)
- P M Arnold
- Department of Neurosurgery, University of Kansas, Kansas City 66160-7383, USA
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Abstract
Myelopathy, the rapid or insidious onset of motor and sensory abnormalities referable to the spinal cord, occurs as a result of a variety of causes that may be classified on the basis of their location of origin (intramedullary, intradural-extramedullary, and extradural). The first goal of imaging is to appropriately assign the observed abnormality to its location of origin and, therefore, into the correct diagnostic list. This article focuses on the plain film, computed tomography, and magnetic resonance demonstration of extradural causes of myelopathy.
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Affiliation(s)
- M I Rothman
- Anna Gudelsky Magnetic Resonance Imaging Center, University of Maryland Medical Systems, Baltimore 21201
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Abstract
Infective spondylitis, the combined infection of the osseous vertebral structures and disc space, constitutes 2% to 4% of all cases of osteomyelitis, and is increasing in prevalence. Differences in clinical and imaging presentation between children and adults are explained by developmental anatomic differences. Radiographic evaluation of infective spondylitis has previously included plain films, CT scans and nuclear imaging. However, MRI is emerging as the most sensitive and specific modality for early detection of pyogenic and nonpyogenic infections and their complications, as well as in follow-up evaluation. Degenerative disc disease, seronegative spondyloarthropathies, and spondyloarthropathy associated with long-term hemodialysis may mimic the imaging abnormalities of infective spondylitis.
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Affiliation(s)
- M I Rothman
- Department of Diagnostic Radiology, University of Maryland Medical Systems, Baltimore 21201
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Affiliation(s)
- M M Hoeper
- Department of Pneumology, Hannover Medical School, Germany
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Modalités du diagnostic des infections ostéo-articulaires : place des différentes techniques d'imagerie. Med Mal Infect 1991. [DOI: 10.1016/s0399-077x(05)80103-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Abstract
The authors report 10 cases of spontaneous pyogenic spinal osteomyelitis encountered within a 3-year period. There were six women and four men, ranging in age from 60 to 84 years. Six cases occurred at the thoracic level, three at the lumbar level, and one in the cervical spine. No patient was diabetic, immunocompromised, or receiving steroid therapy, and none had a history of endocarditis or intravenous drug abuse. No patient had undergone previous spinal surgery. There were no instances of coexisting tuberculosis or malignancy. Contemporaneous cases with known predisposing factors have been excluded from this report; however, three patients did have a recent history of somatic infection, one with known sepsis. All 10 patients had been previously misdiagnosed, frequently by neurosurgeons and orthopedists as well as by internists and family practitioners. Three had undergone inappropriate or unnecessary surgical procedures, and two had received inappropriate radiation therapy. Seven cases were caused by Staphylococcus species. Gram-negative bacteria, or anaerobic infections. In the other three, no bacteriological diagnosis was made, secondary to prolonged antibiotic therapy before surgery. Each patient had developed symptomatic neural element compression, spinal instability, or both by the time of their referral. The patients with subcervical pyogenic spinal osteomyelitis underwent transthoracic or retroperitoneal decompression and corpectomy with simultaneous autologous bone grafting, followed by 6 weeks of bed rest and 6 weeks of intravenous broad-spectrum or organism-specific antibiotic therapy. They were then mobilized in orthoses for an additional 6 weeks. In no case were foreign implants employed or further stabilization procedures necessitated. One patient required an additional 6 weeks of antibiotics for recalcitrant Pseudomonas colonization. Despite the patients' advanced age and the extensive surgical procedures, there was no mortality and no neurological morbidity. All patients were asymptomatic or demonstrated objective improvement upon discharge from the hospital. In this subset of patients with spontaneous pyogenic vertebral osteomyelitis, the only predisposing factor was advanced age.
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Affiliation(s)
- D W Cahill
- Division of Neurosurgery, University of South Florida, College of Medicine, Tampa
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O'Sullivan R, McKenzie A, Hennessy O. Value of CT scanning in assessing location and extent of epidural and paraspinal inflammatory conditions. AUSTRALASIAN RADIOLOGY 1988; 32:203-6. [PMID: 3190607 DOI: 10.1111/j.1440-1673.1988.tb02722.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Raininko RK, Aho AJ, Laine MO. Computed tomography in spondylitis. CT versus other radiographic methods. ACTA ORTHOPAEDICA SCANDINAVICA 1985; 56:372-7. [PMID: 4072655 DOI: 10.3109/17453678508994350] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Eighteen patients with spondylitis underwent 21 examinations by computed tomography (CT). Bone destruction was found in all, paravertebral inflammatory mass in 18, and epidural extension in 12 examinations. Conventional techniques revealed a paravertebral mass in only two cases. Plain radiographs showed destruction in fewer vertebrae in nine cases, in one of which the plain radiographs were definitely negative. Simultaneous conventional tomography gave sufficient clinical information of bone changes but was not better than plain radiographs in the evaluation of soft tissue structures. Abscesses could only be demonstrated by CT. The operative findings were in agreement with CT scans in almost all cases operated. CT was valuable when planning the surgical approach.
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