Internal Medicine / Shu-ichi Yamashita, Wakaba Tsuchimochi, Tadato Yonekawa, Itaru Kyoraku, Kazutaka Shiomi and Masamitsu Nakazato
Summary points:
An 86-year-old woman presents with headache and somnolence 2 days after successful resection of a Rathke's cleft cyst by basal-frontal craniotomy. Axial and coronal views of fluid attenuated inversion recovery (FLAIR) images of magnetic resonance imaging (MRI) of the brain are provided. The authors discuss their diagnosis of tension pneumocephalus and describe emergency decompression by craniotomy to alleviate pressure on the brain parenchyma.