Department of Otolaryngology-Head and Neck Surgery, Mayo Clinic, Rochester, MN, United States of America.
Department of Radiology, Mayo Clinic, Rochester, MN, United States of America.
Am J Otolaryngol. 2021 Jul-Aug;42(4):102981. doi: 10.1016/j.amjoto.2021.102981. Epub 2021 Feb 16.
Spontaneous otogenic pneumatocele is a rare entity resulting from a pressure gradient between a dehiscent temporal bone and the intracranial space. Secondary infection can ensue in patients with concurrent otomastoiditis. The current study discusses the clinical presentation and imaging characteristics of two cases of secondarily infected otogenic pneumatoceles.
Case series.
Two patients were diagnosed with a temporal lobe abscess in the setting of otogenic pneumatocele. Diagnosis was aided by both CT and MRI demonstrating a diffusion restricting lesion within brain parenchyma in association with free air in close proximity to an underlying tegmen defect.
Prompt diagnosis of a secondarily infected otogenic pneumatocele with CT and MRI allows for surgical drainage with closure of the tegmen defect to prevent further complications and recurrence.
自发性耳原性肺气囊肿是一种罕见的疾病，是由于破裂的颞骨和颅腔之间的压力梯度引起的。并发乳突炎的患者可能继发感染。本研究讨论了两例继发感染的耳原性肺气囊肿的临床表现和影像学特征。
病例系列。
两名患者在耳原性肺气囊肿的基础上被诊断为颞叶脓肿。CT 和 MRI 均有助于诊断，显示脑实质内弥散受限病变，伴有紧邻天幕缺损的游离气。
及时通过 CT 和 MRI 诊断继发感染的耳原性肺气囊肿，行手术引流并封闭天幕缺损，可预防进一步的并发症和复发。
