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Idiopathic cervical osteomyelitis presenting as dysphagia.

INTRODUCTION

Spinal epidural abscesses are known to present with symptoms like fever and progressive neurological symptoms. There is usually a history of predisposing factors like diabetes, immune deficiency conditions, recent spinal surgery or IV drug abuse. In this case, the patient presented with dysphagia as the main symptom, but none of the above risk factors making its diagnostic outcome impossible to predict.

CASE REPORT

A 68 years old retired tennis coach was urgently admitted under the care of the ENT team following an alarming outpatient MRI scan result. The patient was referred with a six weeks history of progressive difficulty swallowing solids. Initially the patient was seen by his GP due to neck pain after riding his bicycle. It was clinically diagnosed as whiplash and treated successfully with analgesia and physiotherapy for 5 weeks. No history of URTI or trauma was reported. However, progressively the patient developed difficulties swallowing solids and described an uncomfortable "lump in his throat" sensation. The patient was, at all times apyrexial and his ENT examination was unremarkable except for limited extension of his neck and raised inflammatory markers. Due to these clinical findings, an urgent MRI neck scan with contrast was requested showing an extensive retro-pharyngeal enhancing collection associated to an epidural collection extending from C2 to C5/6. This collection indented the cord, particularly on the right. In addition, there was enhancement of the C4 and C5 vertebral bodies consistent with osteomyelitis (Figure 1 & 2).

[FIGURE 1 OMITTED]

[FIGURE 2 OMITTED]

After discussion with the Orthopaedic team, the patient was commenced on a six weeks course of broad spectrum antibiotic intravenously. Complete recovery was achieved, without any neurological, motor deficit or long term problems.

DISCUSSION

Dysphagia can be a complication post-spinal surgery due to iatrogenic oesophageal injury or spinal abscess formation. However, it is very rare that can be the primary symptom at presentation of a spontaneous spinal abscess formation as proven by only one case report found after extensive literature review. (1) The prevalence rate of spinal epidural abscess varies from 0.18 to 2 per 10.000 admissions in general hospitals (2). A primary source of infection is not identified in 20% to 40% of patients.(3) The cervical spine is the least commonly affected vertebral region. Some authors have reported an incidence of 19% and 21% of epidural abscesses occurred in the cervical spine.(4) The pathognomonic features include fever, progressive neurological symptoms, meningitis, neck / back pain or sepsis.(5,6) Cervical epidural abscess without predisposing factors have been reported before (7), however, previous case series (4) have shown that the development of spinal abscess is predisposed by risk factors such as intravenous drug abuse, nonspinal infection (cellulitis, furuncles, retropharyngeal or psoas abscess and endocarditis); diabetes mellitus, chronic alcoholism, recent spinal or epidural procedures, recent spinal trauma, HIV infection, and chronic steroid use. This clinical case did not present any of the above risk factors making its diagnostic outcome impossible to predict. MRI typically demonstrates heterogeneously enhancing epidural collections. Spinal epidural abscesses are isointense/hypointense on T1-weighed images and hyperintense on T2-weighed images. As mentioned above, this patient's MRI scan results showed a clear cervical spine abscess as the cause of this patient's unique symptom: dysphagia. Management of spinal epidural abscesses is either conservatively with antibiotics alone or urgent surgical decompression (8), followed by long course of intravenous and/or oral antibiotics (5,9). Our case was treated conservatively with abroad spectrum antibiotic. It seems that urgent surgery would be the treatment of choice in those patients presenting with neurological symptoms. (7) Even though, this case fully recovered after being treated with IV antibiotics for 6 weeks; it is important to note that generally surgical intervention provides a better outcome. (7)

REFERENCES

(1.) Connolly AA, Waldron J, Stafford N, Birch R. Chronic bone abscess as an unusual cause of dysphagia. Journal of Laryngology & Otology. 1991;105(12):1084-1085

(2.) Lu C, Chang W, Lui C, Lee P, Chang H. Adult spinal epidural abscess: clinical features and prognostic factors. Clinical Neurology and Neurosurgery. 2002;104(4):306-310.

(3.) Recinos PF, Pradilla G, Crompton P, Thai Q, Rigamonti D. Spinal Epidural Abscess: Diagnosis and Treatment. Operative technique in Neurosurgery. 2004;7(4):188-192.

(4.) Reihsaus E, Waldbaur H, Seeling W. Spinal epidural abscess A meta-analysis of 915 patients. Neurosurg Rev. 2000;23:175-204.

(5.) Darouiche RO, Hamill RJ, Greenberg SB. Bacterial spinal epidural abscess. Review of 43 cases and literature survey. Medicine. 1992;71:369-385.

(6.) Baker AS, Ojemann RG, Swartz MN, Richardson EP. Spinal epidural abscess. N Engl J Med. 1975;293:463-8.

(7.) Vilke GM, Honingford EA. Cervical spine epidural abscess in a patient with no predisposing risk factors. Annals of Emergency Medicine. 1996;127(6):777-780.

(8.) Curry WT, Hoh BL, Amin-Hanjani S et al. Spinal epidural abscess: clinical presentation, management, and outcome. Surg Neurol. 2005;63:364-371

(9.) Verner EF, Musher DM. Spinal epidural abscess. Mad Clin North Am. 1985;69:375-384

Location: (1) Derriford Hospital, Plymouth, UK & (2) Addenbrooke's Hospital, Cambridge, UK

Citation: JSCR. 2010 3:6

Article Date: May 2010
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Article Details
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Author:Ghaly, G.; Espeso, A.; Fish, B.
Publication:Journal of Surgical Case Reports
Article Type:Case overview
Geographic Code:1USA
Date:Jul 1, 2010
Words:843
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