Preoperative Anemia as a Prognostic Factor in Endometrioid-Type Endometrial Carcinoma.

Objective: This study sought to determine the frequency of preoperative anemia (hemoglobin level <12 g/dL) and its prognostic significance for clinicopathological factors and survival outcomes in Saudi patients with endometrioid-type endometrial carcinoma (EC).

Methods: A retrospective cross-sectional study was conducted at King Faisal Specialist Hospital & Research Centre, Riyadh, Saudi Arabia. A total of 148 patients who underwent staging surgery for primary EC were retrospectively analyzed for perioperative details regarding clinicopathological factors and survival.

Results: The frequency of preoperative anemia was 27.7% (n = 41). Patients with advanced FIGO disease (stages III-IV), unfavourable endometrioid tumour grade II-III, ≥50% myometrial invasion, positive lymphovascular space invasion, and tumour recurrence had statistically significant lower mean preoperative hemoglobin levels (two-tailed Mann-Whitney U test; P < 0.05). Patients with preoperative anemia had statistically significant higher rates of advanced FIGO stage III-IV (P = 0.0000), unfavourable grades II-III endometrioid histology (P = 0.0005), ≥50% myometrial invasion (P = 0.0016), positive lymphovascular space invasion (P = 0.0019), and tumour recurrence (P = 0.0064) than patients without preoperative anemia (two-tailed chi-square test). In a univariate analysis, patients with preoperative anemia had statistically lower significant mean 5-year disease-free survival (DFS) and overall survival (OS) rates than patients without preoperative anemia (log-rank test; P < 0.0001 and P < 0.0003, respectively). In a multivariate analysis, preoperative anemia was shown to be an independent prognostic factor for 5-year DFS (P = 0.0303), but not OS (P = 0.2588).

Conclusion: In patients with endometrioid-type EC, the preoperative anemia is fairly common. Moreover, preoperative anemia is correlated with a number of unfavourable clinicopathological factors, as well as poor survival (in terms of DFS and OS) in the univariate analysis.