title: Subdural tension pneumocephalus after posterior fossa operation: is the inverted bottle phenomenon the only causative factor?
mesh_terms: D001254:Astrocytoma / Q000601:surgery; D001706:Biopsy; D001932:Brain Neoplasms / Q000601:surgery; D002557:Cerebrospinal Fluid Shunts / Q000009:adverse effects*; D002648:Child; D003388:Cranial Fossa, Posterior; D005260:Female; D006801:Humans; D006982:Hypertonic Solutions / Q000009:adverse effects*; D009609:Nitrous Oxide / Q000009:adverse effects*; D011007:Pneumocephalus / Q000209:etiology*; D011183:Postoperative Complications / Q000209:etiology; D014508:Urea / Q000009:adverse effects
chemical_list: D006982:Hypertonic Solutions; D014508:Urea; D009609:Nitrous Oxide