Periosinus Abscess Mimicking Sinus Vein Thrombosis

Sigmoid sinus vein thrombosis is a rare but life-threatening complication of acute otitis media and mastoiditis. In this case, a 7-years-old male patient who was admitted to our pediatric emergency department with complaints of headache, blurred vision and slippage in the eye was diagnosed with perisinus abscess mimicking right sigmoid sinus vein thrombosis after examination and radiological evaluation and followed up with acetosalamide and dmah. During the follow-up, lumbar puncture (LP) was performed several times for diagnostic and therapeutic purposes and lumboperitoneal shunt placement was required.