One neutral quality RCT found that while prophylactic PN preserved nutritional status and lean body mass better than oral diet in well-nourished breast cancer patients undergoing auto-HCT, there were no differences found in LOS or survival between the two groups. The researchers concluded that well-nourished breast cancer patients who have no major complications or prolonged poor oral intake will probably not benefit from PN while undergoing auto-HCT. Because of its expense and risk for infectious complications, PN should be used in appropriate breast cancer patients only.