Do foreign bodies migrate through the body towards the heart?

Unlabelled: Fixation of foreign bodies (FB), in the mucosa, can favor its migration, giving origin to the popular saying: 'FB walk to the heart'.

Aim: Describe the mechanisms involved in FB migration and how to diagnose them.

Methodology: From a sample of 3,000 foreign bodies, during 40 years, we analyzed four which had extra-lumen migration.