Fig. 3From: Early hematoma expansion in primary intracerebral hemorrhage: incidence and predictorsAn included patient presented by sudden onset of severe frontal headache, repeated vomiting and focal fits; a Initial non-contrast CT shows right frontal hematoma, b CT angiography shows AVM nidus (arrow), c The CT angiography shows spot sign detected in both axial and coronal sections (arrow)Back to article page