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Click 7-year-old Caucasian male with ileal Burkitt lymphoma. Initial US. Focused sonography of the right lower quadrant performed at initial presentation demonstrates a reniform appearing mass in the right lower quadrant, suspicious for intussusception with free fluid in the right lower quadrant. Minimal color flow is seen. (Protocol: GE M12L transducer with pediatric abdomen settings at 9 MHz frequency. Color flow images obtained at 5 MHz).

Click 7-year-old Caucasian male with ileal Burkitt lymphoma. Axial CT images of the abdomen and pelvis demonstrate intussusception of the terminal ileum into the cecum with free fluid in the right paracolic gutter. (Protocol: Phillips Brilliance 64 slice CT scanner, 78 mA, 80 kV, 3 mm slice thickness, CTDIvol 0.842 mGy, 50 mL Optiray 350 IV contrast at 1 mL/s, 360 mL rectal contrast, no oral contrast).

Click 7-year-old Caucasian male with ileal Burkitt lymphoma. Coronal CT images of the abdomen and pelvis demonstrate intussusception of the terminal ileum into the cecum with free fluid in the right paracolic gutter. (Protocol: Phillips Brilliance 64 slice CT scanner, 78 mA, 80 kV, 3 mm slice thickness, CTDIvol 0.842 mGy, 50 mL Optiray 350 IV contrast at 1 mL/s, 360 mL rectal contrast, no oral contrast).

Click 7-year-old Caucasian male with ileal Burkitt lymphoma. Enema. Following initial diagnostic work-up, the patient was taken for air contrast enema. Residual oral contrast from the CT was seen in the transverse and descending colon. The ileocecal intussusception was successfully reduced by the radiologist. A lobulated wall-based soft tissue density at the ileocecal junction was initially felt to represent an edematous ileocecal valve. In retrospect, this most likely represented the mass. (Protocol: Soft tip catheter placed intra-rectally and taped into position. Using fluoroscopic guidance, a sphygmometer was used with 120 mmHg pop off for maximum air pressure. Air was pumped into the colon for 5 minutes).

Click 7-year-old Caucasian male with ileal Burkitt lymphoma. Repeat US. Focused sonography of the right lower quadrant demonstrates a ``target sign,`` consistent with recurrent ileocecal intussusception. (Protocol: GE 9L transducer with pediatric abdomen settings at 8 MHz frequency).

Click 16-year-old Hispanic male with ileal Burkitt lymphoma. Axial contrasted CT of the abdomen/pelvis demonstrate an 8 cm mass at the level of the pelvic inlet with central hypoattenuation, concerning for necrosis or abscess. Further evaluation with delayed imaging was recommended. (Protocol: Phillips Brilliance 64 slice CT scanner, 78 mA, 120 kV, 3 mm slice thickness, CTDIvol 6.692 mGy, 110 mL Optiray 350 IV contrast at 2.5 mL/s, oral contrast).

Click 16-year-old Hispanic male with ileal Burkitt lymphoma. Axial delayed CT images were obtained through the pelvis six hours following the initial CT. This exam demonstrates the large pelvic mass outlined by oral contrast, suggesting extension from or invasion into the small bowel. The area of central necrosis is better delineated.. (Protocol: Phillips Brilliance 64 slice scanner, 99 mA, 120 kV, 3 mm slice thickness, CTDIvol 4.875 mGy, 6 hour delay following original CT).

Click 16-year-old Hispanic male with ileal Burkitt lymphoma. Coronal delayed CT images were obtained through the pelvis six hours following the initial CT. This exam demonstrates the large pelvic mass outlined by oral contrast, suggesting extension from or invasion into the small bowel. The area of central necrosis is better delineated. (Protocol: Phillips Brilliance 64 slice scanner, 99 mA, 120 kV, 3 mm slice thickness, CTDIvol 4.875 mGy, 6 hour delay following original CT).

Click 16-year-old Hispanic male with ileal Burkitt lymphoma. Initial Gallium SPECT. Axial, sagittal, coronal, and spot SPECT images were obtained at 72, 120, and 168 hours following administration of Ga67 citrate. These images demonstrate intense activity in the left upper pelvis. It was thought that this may represent postsurgical, inflammatory changes but possibility of residual disease was considered given intense focal radiotracer uptake. (Protocol: Picker Prism 2000 Dual Head Nuclear Gamma Camera with medium energy collimator, 7 mCi Ga67 citrate via left chest Mediport; images obtained at 72, 120, and 168 hours following injection; Whole body, spot, and SPECT images were obtained).

Click 16-year-old Hispanic male with ileal Burkitt lymphoma. 9 Month Follow Up Axial CT. Follow up axial CT images of the abdomen/pelvis show complete resection of the mass without evidence of residual or recurrent disease. (Protocol: Phillips Brilliance 64 slice scanner, 114 mA, 120 kV, 3 mm slice thickness, CTDIvol 6.212 mGy, 100 mL Optiray 350 IV contrast, oral contrast).

Click 16-year-old Hispanic male with ileal Burkitt lymphoma. Follow Up Gallium SPECT. Axial, sagittal, coronal, and spot SPECT images 120 and 168 hours show complete resolution of postsurgical increased radiotracer uptake. (Protocol: Picker Prism 2000 Dual Head Nuclear Gamma Camera with medium energy collimator, 7.7 mCi Ga67 citrate intravenously, imaged at 120 and 168 hours following radiotracer injection).