Fig. 7
From: What is hiding in the hindgut sac? Looking beyond rectal carcinoma
Burkitt cell lymphoma of the rectum in a 16-year-old male. a Axial CT shows Bulky tumour (arrow) infiltrating the rectum with luminal compromise. b Axial and c sagittal T2-weighted MRI reveal infiltration of the submucosal and muscular layers of the rectum with the tumour (arrow). The mucosal architecture and the shape of the rectum are maintained. The tumour is homogeneously isointense to hypointense on T2-weighted MRI. There is extensive perirectal infiltration (arrowhead). d Axial T1-weighted MRI reveals the isointense tumour (arrow) and e contrast-enhanced MRI reveals mild enhancement (arrow)