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PET/CT scan hot spots
I had a PET and CT 2/07.  Showed a hot spot in chest between the breast and the lungs.  They call it the chest area.  I had breast cancer in 5/06 with double mast in 7/06 so I had no real breast tissue at the time of the scan.  I had a bad infection in 11/06 that required 4 weeks of IV meds.  They called the hot spot a scar or infection left over from the 11/06.

I found a lump on my implant in 7/07 and had it removed.  Cancer again.  This time it was ER+ they call it a new cancer.  Had 8 rounds of ACT and just ended.  Had a PET/CT scan again last week 1/08.  The hot spot was still there but now smaller.  My onc. said not to worry and he will get another PET/CT following my 6 weeks of radiation.  I meet with my radiation doctor next week and would like to ask him more but not sure what to ask and want to be prepared.

To sum: I have a hot spot that has been hot for almost a year but is now smaller following chemo.

1- What questions should I be asking my radiation doctor about this spot?  I didn't ask my onc. about this because I must of been shock or he said not to worry he will take care of me and keep an eye on it and I trust him.  However, now I am worried and scared and want to know more.  Could this be cancer?
2- Can a scar or infection still show hot for years?
3- Can a scar or infection get smaller?
4- What other tests should I have?
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301037 tn?1213868178
Early detection of recurrence is clinically important and can improve the prognosis and survival of patients with cancer. 18F-FDG PET is an effective whole-body imaging technique that detects metabolic changes preceding structural findings. PET/CT provides fused images that demonstrate the complementary roles of functional and anatomic assessments in the diagnosis of cancer recurrence through the precise localization of suspected 18F-FDG foci and their characterization as malignant or benign.
A persistent hot spot post mastectomy may indicate a recurrent mitotic etiology and requires further confirmation on histopathology, follow up post Radiotherapy.
Scar tissue shouldnt show uptake while infection shouldnt have persisted so long, so further evalaution is recommended.
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