Question about black spots on/near lymph nodes

[ANDRETEXAS]

Hi all....

Just finished 12 rounds of FOLFOX for Stage 3b cc on August 14. Had CT scan on August 25. Met with onc yesterday (Aug 29). Said the scan showed a black spot near my port that he thinks may be a blood clot, but not sure. Also saw some black spots near where my original colon resection was located, but no where else (liver, lungs, etc).....Says may be nothing to worry about.... He scheduled a follow-up PET scan for next week to make sure there is nothing...Said rather than me having so schedule a visit, he would just call me with the results. Any thoughts on these black spots? Thanks. Andre