ultrasonic scanning was performed at the following operations : 10 brain tumors ( 4 glioblastomas multiforme , 2 astrocytomas , 1 medulloblastoma , 2 metastatic tumors ) , 2 brain cysts ( arachnoid , epidermoid ) , 1 tuberculous abscess , 3 cerebral hematomas : 2 spinal cord tumors ( malignant melanoma , glioma ) , 2 syringomyelias , 1 posterior longitudinal ligament thickening .
C0017636
glioblastomas multiforme
C0004114
astrocytomas