• Pietro Spennato, Alessia Imperato, Maria Rosaria Scala, Marianna Di Costanzo, Claudio Ruggiero, and Giuseppe Cinalli.
• Department of Neurosciences, Unit of Neurosurgery, Santobono-Pausilipon Children's Hospital, Naples, Italy. Electronic address: pierospen@gmail.com.
• World Neurosurg. 2024 Apr 1; 184: 121-2.

AbstractBrain abscess is a focal infection occurring within the brain parenchyma consisting of a pus collection surrounded by a vascularized capsule and a fibrinous-caseous layer between the pus and capsule. Surgery is indicated for lesions with a diameter >25 mm. Different surgical approaches have been described, including puncturing of the abscess (under neuronavigation, stereotactic or echographic guidance) with aspiration of the purulent fluid through a catheter and craniotomy with microsurgical removal of the purulent material and surrounding capsule. In recent years, the endoscopic approach has become more frequently used to treat brain abscesses. The theoretical advantages are visual awareness of the completeness of pus removal and the possibility of also removing the more solid fibrinoid component, which could be the source of recurrence. Craniotomy is likewise avoided. We present the case of an 11-year-old boy affected by a parieto-occipital brain abscess and initial ventriculitis who underwent endoscopic surgery. An ultrasonic aspirator was used to wash and suck the purulent material and fragment and remove the more solid fibrinoid component. The occipital horn of the lateral ventricle was also entered, and pus was removed. At the end of the procedure, a ventricular drainage tube was left in the surgical cavity. It was removed 1 day later, because the cavity had completely collapsed. The key surgical steps are presented in Video 1.1-9 The procedure was uneventful, with very good clinical and radiological results. The endoscopic technique has been shown to be a safe and effective treatment option for intracranial abscess. In the case of large superficial lesions, the surgical risks appear similar to those of simple drainage through catheters, with a possible reduction of the 20% reported recurrence rate. The use of an ultrasonic aspirator could facilitate complete and faster pus removal, increasing the efficacy of the procedure. The patient and his parents consented to the procedure and the report of the patient's case details and imaging studies. All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards.Copyright © 2023 Elsevier Inc. All rights reserved.

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