Other - Choriocarcinoma - 32-year-old female, recent serum beta-hCG levels rising

History
32 year old female, 130 lbs. Chemotherapy completed Jan. 2004, recent serum beta-hCG levels rising. Referred to localize site of presumed recurrent disease.

PET/CT Findings
Previous PET scan shows much of neck, upper torso and mediastinal activity has disappeared. Mildly increased tracer accumulation noted in left pelvis, corresponding to left ovary not noted on prior exam. Can be physiological and seen in women who are premenopausal; correlation with US recommended to exclude presence of ovarian neoplasm.

Dosage
CT -   95 reference mAs CAREDose4D, 130 kV, 5 mm slices, 2.5 reconstruction increment
PET - 12.8 mCi F18-FDG, 60 min. uptake, AW-OSEM (4i6s), 2 min/bed

Courtesy of
Long Beach PET Imaging Center, Long Beach, CA, Dr. Jeff Dobkin