Retractor injury refers to injury caused by intraoperative retraction of an organ from the operative field. Such injuries most commonly occur in the liver following upper gastro-intestinal surgeries, however brain retraction related injury due to neurosurgical techniques is also a known phenomenon.
Appearance of a liver retractor injury will depend on the timing of the imaging. In the immediate post-operative period there would typically be a hypodense lesion in the liver edge with a linear, or wedge shape but there could also be diffuse hypodense lesions 2. There may be associated adjacent hematoma. Later there may be atrophy and retraction of the capsule.
The differential diagnosis would include metastasis or abscess.
- 1. N A Yassa, J H Peters. CT of focal hepatic injury due to surgical retractor. (2013) AJR. American journal of roentgenology. 166 (3): 599-602. doi:10.2214/ajr.166.3.8623634 - Pubmed
- 2. Orr KE, Williams MP. MDCT of retractor-related hepatic injury following laparoscopic surgery: appearances, incidence, and follow-up. (2014) Clinical radiology. 69 (6): 606-10. doi:10.1016/j.crad.2014.01.008 - Pubmed
- 3. Jun Zhong, Manuel Dujovny, Alfred R. Perlin, Eimir Perez-Arjona, Hun K. Park, Fernando G. Diaz. Brain retraction injury. (2013) Neurological Research. 25 (8): 831-8. doi:10.1179/016164103771953925 - Pubmed