708 Background: Hepatic resection for CRC metastasis is now considered a standard of care and perioperative chemotherapy may improve outcomes. Resection of metastasis isolated to lung is also considered potentially curable, although there is still some variation in recommendations and no evidence for perioperative or adjuvant chemotherapy. Here, we explore patient characteristics and outcomes for patients undergoing lung resection for mCRC, with the liver resection group as the comparator. Methods: SA mCRC registry data were analysed to assess patient characteristics and survival outcomes between patients suitable for lung or liver resection. K-M survival analysis was used to assess OS. Results: 3,241 patient are registered on the database. 102 (3.1%) patients were able to undergo a lung resection compared to 420 (12.9%) a liver resection. Of the lung resection patients, 21% initially presented with liver only disease, 11% both lung and liver, and 7% brain or pelvic disease. 62 (61%) presented with lung only disease. Of these patients, 79% went straight to surgery and 34% had lung resection as the only intervention. When comparing the groups, they were balanced for age and sex, liver v lung; 67.7 years v 69.5 years, 63.6% v 57.8% male. There was no difference in pathological grade or KRAS MT rate when tested (36% liver v 32% lung). Compared to patients undergoing liver resection, those having lung resection were more likely to be metachronous (75.5% v 44%, p=<0.0001) and have a rectal primary (43.1% v 30.7%, p=0.017). Chemotherapy for metastatic disease was given more often in liver resection patients (76.9% v 53.9%, p=0.17). Median overall survival is not reached for both arms and the lower hazard rate for lung than liver resection does not approach statistical significance (HR 0.82, 95% CI 0.54-1.24, p=0.33). The 3 and 5 year survival liver v lung as follows; 77% v 81% and 62% v 70%. Conclusions: Lung resection occurs less frequently than liver resection for metastatic disease as expected. There was no statistical difference in overall survival in patients suitable for lung or liver resection. These data support the potential for long term survival with resection of both lung and liver metastasis in mCRC.