WFDC2 and intestinal obstruction: Third, there are many potentially important factors affecting postoperative outcomes, such as preoperative examinations (positron emission tomography [PET]/computed tomography [CT], serum human epididymis protein 4 (HE4), Risk of Ovarian Malignancy Algorithm [ROMA] score, etc.), ECOG performance status, specific preoperative comorbidities (ascites, intestinal obstruction, etc.), operative time, and occurrence of serious postoperative complications (pulmonary infarction, infection of lymphatic cyst, etc.), none of which could be included in this study.