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Table 2 Extent of mass lesion resection comparison between both groups

From: The role of intraoperative ultrasound in gross total resection of brain mass lesions and outcome

ParametersIOUS groupConventional groupp
Gross totalSubtotalPartialGross totalSubtotalPartial
N%N%N%N%N%N%
Tumors179/23875492110463/20830107513818<0.05
 Gliomas111/1547235238633/1472290612416
  High grades89/1227327226721/1072074701211
  Low grades22/32698252612/403016401230
 Metastatic36/4286410256/1540427533
 Medulloblastoma18/2282418  15/2854725621
 Others14/2070630  9/1850633317
Hematoma45801120  30463046580.001
Abscess2976924  103772610370.001
Location to tentorium
 Supratentorial196/2458040169473/222331195430140.001
 Infratentorial63/877223261130/783825322329
Location to cortex
 Cortical and subcortical70/967323243343/10043444413130.001
 Subcortical189/2368040177360/20030100504020
Maximal diameter
 ≤ 5 cm180/2058821104280/1874392491580.001
 > 5 cm79/1276242336523/1132052463834
Age
 ≤ 18 years63/847516195636/7647273613170.001
 > 18 years196/2487947195267/22430117524018
Sex
 Male170/2157942203173/19837804045230.001
 Female89/1177621187630/10229646388
  1. IOUS intraoperative ultrasound