Presentation
History of old head trauma since he was 5 months old. Now presented with seizures and progressive left head swelling.
Patient Data
Gapped left occipital skull fracture with herniation of the left occipital leptomeninges and brain parenchyma through the bony defect. Left occipito-temporal area of encephalomalacia, likely sequel of old cerebral injury.
Case Discussion
Leptomeningeal cysts, also known as growing skull fractures, are an enlarging skull fracture that occurs near post-traumatic encephalomalacia. The term cyst is actually a misnomer, as it is not a cyst, but an extension of the encephalomalacia. Hence, it is usually seen a few months post-trauma.