Fig. 4From: Primary intraventricular synovial sarcoma of the brain with recurrence - case presentationImages of the 2013 (a) and 2019 (b) tumour resections showing morphologically similar, mitotically active, spindle cell tumours (haematoxylin and eosin x200, microscope olympus bx53 with olympus dp27, camera and cellSens software to capture the images). FISH analysis of both tumours confirmed an SYT gene rearrangement (c). The normal signals consist of closely adjacent orange/red and green probes. The abnormal rearranged signal indicating SYT gene rearrangement is seen when there is a gap of at least twice the diameter of the fusion signal between the orange and green signalBack to article page