2024 Volume 49 Issue 4 Pages 183-188
Extra-axial fluid collection (EAFC) can occur following surgery or trauma. Here, we report a case of EAFC which developed after the endoscopic removal of a large atypical teratoid/rhabdoid tumor (AT/RT) in the left temporal lobe. A girl, aged 1 year 9 months, with a left temporal AT/RT measuring 71 mm in maximum diameter underwent endoscopic surgery through a small craniotomy. Subtotal resection of the tumor with a small-diameter cavitron ultrasonical surgical aspirator was performed through an approximately 2 cm cortical incision. The inferior horn of the left lateral ventricle was opened. Two weeks after surgery, she developed an EAFC accompanied by vomiting and right hemiparesis, requiring emergency drainage. The symptoms disappeared after approximately two months, with improvement in the EAFC. If the ventricle is opening during tumor removal through a small cortical incision, and cerebrospinal fluid flow is impaired, the possibility of symptomatic EAFC should be considered.
