PMC4899416_01
FDG PET/CT fused axial images showing (A) the left pelvic mass pre-treatment and (B) complete response to treatment with chemoradiation.
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PET/CT was done and showed the left retroperitoneal mass (2.7 x 1.8 cm) as well as a left-sided pelvic mass (3.6 x 2.6 cm) with ureteral obstruction (Fig. 1a).
VMAT treatment plan to 45Gy (red color wash) with an integrated boost to 55Gy (purple color wash) with (A) axial, (B) sagittal and (C) coronal representative images.
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She received 45 Gy in 25 fractions of 1.8 Gy to elective lymph node regions with a simultaneous integrated boost to FDG-avid lymph nodes to 55 Gy in 25 fractions (Fig. 2 a-c).
PMC4899416_02
PMC4899416_03
Maximal intensity projection image at presentation showing the large FDG avid mass in the left pelvis.
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PMC4899416_03_gr3.jpg
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She underwent PET/CT which showed the left sided retroperitoneal mass measuring 7.4 x 6.5 x 6.9 cm with central necrosis with an SUV of 15.1, a more superior lesion resembling a periaortic lymph node measuring 2.5 x 3.6 x 1.7 cm with an SUV of 12.1 (Fig. 3).