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Spontaneous cerebral abscess due to Bacillus subtilis in an immunocompetent male patient: A case report and review of literature

查看全文 作　　者：Ioannis [1]Tsonis;Lydia [1]Karamani;Panagiota [2]Xaplanteri;Fevronia [2]Kolonitsiou;Petros [3]Zampakis;Georgios [1]Gatzounis;Markos [4]Marangos;Stelios F [4]Assimakopoulos 高影响力作者 机构地区：[1]Department of Neurosurgery, University of Patras Medical School;[2]Department of Microbiology, University of Patras Medical School;[3]Department of Radiology, University of Patras Medical School;[4]Department of Internal Medicine, Division of Infectious Diseases, University of Patras Medical School高影响力机构 出　　处：《World Journal of Clinical Cases》索引2018年第6卷第16期,共6页高影响力期刊 摘　　要：BACKGROUND Bacillus subtilis(B. subtilis) is considered a nonpathogenic microorganism of the genus Bacillus and a common laboratory contaminant. Only scarce reports of B. subtilis central nervous system infection have been reported, mainly in the form of pyogenic meningitis,usually in cases of direct inoculation by trauma or iatrogenically.CASE SUMMARY A 51-year-old man, with a free previous medical history, presented to the Emergency Department of our hospital complaining of recurrent episodes of left upper limb weakness, during the last month, which had been worsened the last 48 h. During his presentation in Emergency Department he experienced a generalized tonic-clonic grand mal seizure. Brain magnetic resonance imaging(MRI) scan with intravenous Gadolinium revealed a 3.3 cm × 2.7 cm lesion at the right parietal lobe surrounded by mild vasogenic edema, which included the posterior central gyrus. The core of the lesion showed relatively homogenous restricted diffusion. Post Gadolinium T1 W1 image, revealed a ring-shaped enhancement. Due to the imaging findings, brain abscess was our primary consideration. Detailed examination for clinical signs of infectious foci revealed only poor oral hygiene with severe tooth decay and periodontal disease, but without detection of dental abscess. The patient underwent surgical treatment with right parietal craniotomy and total excision of the lesion. Pus and capsule tissue grew B. subtilis and according to antibiogram intravenous ceftriaxone 2 g bids was administered for 4 wk. The patient remained asymptomatic and follow-up MRI scan two months after operation showed complete removal of the abscess.CONCLUSION This case highlights the ultimate importance of appropriate oral hygiene and dental care to avoid potentially serious infectious complications and second, B. subtilis should not be considered merely as laboratory contaminant especially when cultivated by appropriate central nervous system specimen. 关 键 词：Bacillus SUBTILIS Brain ABSCESS Central nervous system infection CRANIOTOMY MENINGITIS Case report
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