Radioactive seed migration to the lungs after prostate brachytherapy

Case contributed by Dr Jayanth Keshavamurthy

Presentation

Chest radiograph ordered by rheumatologist for RA. No prior radiographs in chart.

Patient Data

Age: 70
Gender: Male

A brachytherapy seed from prostate cancer treatment has migrated to the lungs.

The radioactive half life of the seeds (Iodine-125 is 60 days and Palladium-103 for 17 days).

So after 4 half lives (8 months for iodine and 2 months for palladium) the seeds should only have 1/16 or 6% of their radioactivity left (1/2 X 1/2 X 1/2 X 1/2). 

Scintigraphy is another way to follow up for migration of seeds.

Case Discussion

A brachytherapy seed from prostate cancer treatment has migrated to the lungs.

 

Now we will do PFT 's and CT scan of lungs baseline to evaluate for any local radiation induced damage.

 

Brief pubmed search showed one diagnosed case of small cell lung cancer from embolisation of radiation seed to lungs,  localised radiation pneumonitis and acute MI in one case.

PlayAdd to Share

Case Information

rID: 41576
Case created: 9th Dec 2015
Last edited: 11th Dec 2015
Inclusion in quiz mode: Included

Updating… Please wait.
Loadinganimation

Alert accept

Error Unable to process the form. Check for errors and try again.

Alert accept Thank you for updating your details.