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Arachnoid granulation

Case contributed by Dr Subhan Iqbal


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Patient Data

Age: 55 years
Gender: Male
  • there are multiloculated cystic skull-based osteolytic lucencies seen posteriorly at the right occipital bone
  • no fracture is seen in the calvarium
  • normal skull soft tissues
  • no territorial infarction or tumor mass lesion seen 
  • no extradural, subdural hematoma or contusional bleed 
  • no coup or counter coup injury seen in brain parenchyma
Annotated image

Case Discussion

 Transverse and superior sagittal sinuses are a common location of arachnoid granulations. Causes of lytic lesions in skull can be remembered by using the mnemonic: 


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Case information

rID: 79685
Published: 8th Jul 2020
Last edited: 11th Jul 2020
Inclusion in quiz mode: Included
Institution: Sindh institute of urology and transplantation karachi

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