Abstract：
Emphysematous Osteomyelitis (EO) is an extremely rare bone infection caused by gas-forming bacteria with few documented cases in the literature. Our study aims to highlight characteristic imaging features, including the novel use of positron emission tomographymagnetic resonance imaging (PET-MRI) in diagnosing this potentially fatal entity.
Radiography and computed tomography (CT) of the pelvis were performed due to complaints of persistent back pain in a 36-year-old male with a history of recent abdominal aorta surgery. Sacroiliac joint aspiration was performed, and a follow-up PET-MRI was subsequently performed.
Radiography and CT demonstrated bilateral sacroiliitis, osteonecrosis and EO in the bony pelvis. Left sacroiliac joint aspiration identified Staphylococcus aureus as the causative organism. PET-MRI revealed EO with left iliopsoas abscess and abdominal aortic graft infection. The patient\'s symptoms resolved following antibiotic therapy and image-guided abscess drainage.
EO is a lethal variant of osteomyelitis with a dearth of published cases. Pertinent imaging characteristics of EO on radiography, CT and PET-MRI are discussed here, along with a review of the literature surrounding this rare condition.
Radiography and computed tomography (CT) of the pelvis were performed due to complaints of persistent back pain in a 36-year-old male with a history of recent abdominal aorta surgery. Sacroiliac joint aspiration was performed, and a follow-up PET-MRI was subsequently performed.
Radiography and CT demonstrated bilateral sacroiliitis, osteonecrosis and EO in the bony pelvis. Left sacroiliac joint aspiration identified Staphylococcus aureus as the causative organism. PET-MRI revealed EO with left iliopsoas abscess and abdominal aortic graft infection. The patient\'s symptoms resolved following antibiotic therapy and image-guided abscess drainage.
EO is a lethal variant of osteomyelitis with a dearth of published cases. Pertinent imaging characteristics of EO on radiography, CT and PET-MRI are discussed here, along with a review of the literature surrounding this rare condition.
摘要：
背景：肺气肿性骨髓炎（EO）是一种极为罕见的由气体形成细菌引起的骨感染，文献中记载的病例很少。我们的研究旨在突出特征性成像特征，包括正电子发射断层扫描-磁共振成像（PET-MRI）在这种潜在致命实体的诊断中的新用途。
方法：一名有近期腹主动脉手术史的36岁男性因持续背痛而进行骨盆X线摄影和计算机断层扫描（CT）。进行骶髂关节抽吸，随后进行PET-MRI随访。
结果：X线摄影和CT显示双侧骶髂关节炎，骨性骨盆中的骨坏死和EO。左骶髂关节误吸确定金黄色葡萄球菌为病原体。PET-MRI显示EO伴左髂腰肌脓肿和腹主动脉移植物感染。在抗生素治疗和图像引导脓肿引流后，患者的症状得以缓解。
结论：EO是骨髓炎的一种致命变种，缺乏已发表的病例。EO在射线照相中的相关成像特性，这里讨论CT和PET-MRI,以及围绕这种罕见情况的文献综述。
方法：一名有近期腹主动脉手术史的36岁男性因持续背痛而进行骨盆X线摄影和计算机断层扫描（CT）。进行骶髂关节抽吸，随后进行PET-MRI随访。
结果：X线摄影和CT显示双侧骶髂关节炎，骨性骨盆中的骨坏死和EO。左骶髂关节误吸确定金黄色葡萄球菌为病原体。PET-MRI显示EO伴左髂腰肌脓肿和腹主动脉移植物感染。在抗生素治疗和图像引导脓肿引流后，患者的症状得以缓解。
结论：EO是骨髓炎的一种致命变种，缺乏已发表的病例。EO在射线照相中的相关成像特性，这里讨论CT和PET-MRI,以及围绕这种罕见情况的文献综述。
