title: Extracranial pneumatocele of the mastoid.
authors: Department of Otolaryngology, Taipei Medical University Hospital, Taipei, Taiwan, Republic of China.
authors: Chi-Hsiang
authors: CH
authors: Hsu
authors: Yuh-Chyun
authors: YC
authors: Chiang
authors: Hsin-Te
authors: HT
authors: Hsu
authors: Te-Ming
authors: TM
authors: Tseng
authors: Fei-Peng
authors: FP
authors: Lee
mesh_terms: D006801:Humans; D008297:Male; D008416:Mastoid / Q000000981:diagnostic imaging*; D011007:Pneumocephalus / Q000000981:diagnostic imaging*; D011859:Radiography; D055815:Young Adult