Document Detail

Subdural tension pneumocephalus following surgery for chronic subdural hematoma.
MedLine Citation:
PMID:  3335913     Owner:  NLM     Status:  MEDLINE    
The computerized tomography (CT) findings were analyzed in five cases of subdural tension pneumocephalus following surgery for chronic subdural hematoma. They were compared with CT scans in 14 cases of asymptomatic subdural pneumocephalus. In this study, two new CT findings were identified that suggest increased tension of the subdural air. Subdural air separates and compresses the frontal lobes, creating a widened interhemispheric space between the tips of the frontal lobes that mimics the silhouette of Mt. Fuji. The presence of air between the frontal tips associated with massive air inclusion over the frontal lobes presumably indicates increased tension of the subdural air. The "Mt. Fuji sign" was seen in four of the five cases with subdural tension pneumocephalus. The other finding was the presence of multiple small air bubbles scattered through several cisterns ("air bubble sign"). It is postulated that these air bubbles enter the subarachnoid space through a tear in the arachnoid membrane caused by increased tension of air in the subdural space. This finding was seen in four cases with subdural tension pneumocephalus. These two CT findings are helpful in making a diagnosis of subdural tension pneumocephalus following surgery for chronic subdural hematoma.
Y Ishiwata; K Fujitsu; T Sekino; H Fujino; T Kubokura; K Tsubone; T Kuwabara
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of neurosurgery     Volume:  68     ISSN:  0022-3085     ISO Abbreviation:  J. Neurosurg.     Publication Date:  1988 Jan 
Date Detail:
Created Date:  1988-02-02     Completed Date:  1988-02-02     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0253357     Medline TA:  J Neurosurg     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  58-61     Citation Subset:  AIM; IM    
Department of Neurosurgery, Yokohama City University Hospital, Japan.
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MeSH Terms
Aged, 80 and over
Chronic Disease
Hematoma, Subdural / surgery*
Pneumocephalus / etiology*,  radiography
Postoperative Complications / etiology*,  radiography
Tomography, X-Ray Computed

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