Presentation
Road traffic accident 1 hour back
Patient Data
Age: 55 years
Gender: Male
From the case:
Arachnoid granulation
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- 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
From the case:
Arachnoid granulation
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Arachnoid granulation
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:
TROMMEL
- T: tuberculosis
- R: radiation
- O: osteomyelitis
- M: multiple myeloma
- M: metastasis
- E: epidermis
- L: lymphoma/Langerhans cell histiocytosis
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