Abstract

Abstract Background/purpose Recent advances in cancer treatment provide surgical indication chances of metastatic brain tumors, and awake craniotomy for them is increasing. However, a small number of hospitals can perform awake craniotomy by limitation of hospital capacity. Here we show a single center retrospective analysis of awake craniotomy for metastatic brain tumor. Materials and Methods we analyzed consecutive 35 cases from January 2016 to January 2022 in our hospital. Rehabilitation staff evaluated them before surgery and after within a week. Result Patients characteristic were as follows. Mean and median age 57.0 (16-81) and median 62 respectively. Left side tumor were 31(88.6%). Frontal lobe was 26(74.3%), temporal lobe 5(14.3%), parietal lobe 3(8.6%), occipital lobe 1. Origin of cancer was lung 17(48.6%), gastrointestinal lesion 5(14.3%), breast 4(11.4%), soft tissues 3(8.6%), radiation necrosis 4(11.4%), uterus and malignant melanoma 1 respectively. KPS was 100-90 18(51.4%), KPS 80 6(8.6%) and KPS70 11(31.4%). Gross total removal was 30, partial removal was 5. MMSE of before and after surgery was mean 27.1 and median 29. Trail Making Test (TMT) of 24 cases test showed improvement in 11 (45.8%) cases. Median OS was 18.8 months (95%CI: 11.2-526). Discussion/conclusion We selected most awake craniotomy on left frontal lobe and each evaluating scales showed no deterioration. Awake craniotomy for metastatic brain tumor is effective procedure for saving function.

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