This prospective observational study looked at patients with liver lacerations and active contrast extravasation who  either had immediate embolization vs. observation. After matching for age, injury score etc. the observation first approach did as well as those who had immediate embolization.

References

Observation-first versus angioembolization-first approach in stable patients with blunt liver trauma: A WTA multicenter study

Journal of Trauma and Acute Care Surgery 97(5):p 764-769, November 2024. | DOI: 10.1097/TA.0000000000004372