Question: I was diagnosed with non-hugkin lymphoma in the liver and the spleen and took 8 rounds of chemoteraphy (R-CHOP). Can you please, explain me the following results of my recent Petscan?:
1. Interval non-visualization of previously detected large hypermetabolic right hepatic lobe and spleen masses. On CT images the corresponding hypoattenuation lesions are smaller and non-hypermetabolic favoring in-active malignant desease.
2. Interval resolution of prior bilateral FDG avid axillary lymph nodes, as well as prior left parotid gland FDG avid nodule.
3. Interval non-visualization of prior hypermetabolic left abdominopelvic peritoneal nodules.
4. No evidence of any suspicious malignant FDG avid uptake focus.
5. Interval development of an uptake focus in the midline lower pelvic cutaneous region favoring an inflammatory process or inadvertent tracer contamination.
6. Small calcification or marker in the left breast's upper outer quadrant. Recommend correlation with mammography.
7. Small R. M. L. pulmonary infiltrate. Recommend imaging follow-up.
8. Re-demonstration of a rounded cyst lesion, about 4 cm, in the right lower pelvis, presumably an ovarian cyst. Recommend correlation with ultrasound unless already performed.

Thanks for your help.

Thanks for your fast response! Can those tiny lesions in the lung and breast be malignant? Are they new ones, like masses? Would the doctor recommend more chemo or radio cycles? What about the pelvis inflammatory process? What does inadvertent tracer contamination mean?