Fig. 6From: Multimodality imaging of indolent B cell lymphoma from diagnosis to transformation: what every radiologist should knowA 59-year-old woman with follicular lymphoma presenting with acute abdominal pain. a Coronal reconstructed CT image acquired during portal venous phase 6Â months before the onset of new symptom shows unremarkable appearance of the abdomen. b Axial CT image acquired during late arterial phase at the time of symptom onset shows a mass within the right renal pelvis (arrow). Biopsy of the lesion shows histologic transformation to diffuse large B cell lymphomaBack to article page