Ahmed Abu-Zaid

Association between polycystic ovary syndrome and the risk of malignant gynecologic cancers (ovarian, endometrial, and cervical): A population-based study from the U.S.A. National Inpatient Sample 2016–2019

This study aimed to systematically examine the relationship between polycystic ovary syndrome and ovarian, endometrial, and cervical cancers using the National Inpatient Sample (NIS) database. We utilized the International Classification of Diseases (ICD-10) system to identify relevant codes from the NIS database (2016-2019). Univariate and multivariable regression analyses (adjusted age, race, hospital region, hospital teaching status, income Zip score, smoking, alcohol use, and hormonal replacement therapy) were conducted to evaluate association between PCOS and gynecologic cancers. Results were summarized as odds ratio (OR) with 95% confidence intervals (CI). Overall, 15,024,965 patients were analyzed, of whom 56,183 and 14,968,782 patients were diagnosed with and without PCOS, respectively. Among the patients diagnosed with gynecologic cancers (n = 91,599), there were 286 with PCOS and 91,313 without PCOS. Univariate analysis revealed that PCOS was significantly associated with higher risk of endometrial cancer (OR = 1.39, 95 % CI [1.18-1.63], p < 0.0001), but lower risk of ovarian cancer (OR = 0.55, 95 % CI [0.45-0.67], p < 0.0001) and cervical cancer (OR = 0.68, 95 % CI [0.51-0.91], p = 0.009). In contrast, after Bonferroni correction, multivariable analysis depicted that PCOS remained significantly associated with higher risk of endometrial cancer (OR = 3.90, 95 % CI [4.32-4.59], p < 0.0001). There was no significant correlation between PCOS and risk of ovarian cancer (OR = 1.09, 95 % CI [0.89-1.34], p = 0.409) and cervical cancer (OR = 0.83, 95 % CI [0.62-1.11], p = 0.218). This first-ever NIS analysis showed that patients with PCOS exhibited unique gynecologic cancer risk profiles, with higher risk for endometrial cancer, and no significant risk for ovarian or cervical cancers.

Preoperative anemia predicts poor prognosis in patients with endometrial cancer: A systematic review and meta-analysis

To systematically and meta-analytically pool the existing evidence regarding the prognostic impact of preoperative anemia (hemoglobin level <12 mg/dl) in patients with endometrial cancer. Four (PubMed, Embase, Scopus and Web of Science) databases were searched from inception to 20-August-2020. We assessed the risk of bias using the Newcastle-Ottawa Scale. We estimated the pooled prevalence of preoperative anemia in the included studies. We pooled odds ratios (ORs) and hazard ratios (HRs) with their 95 % confidence intervals (95 % CIs) to evaluate the correlation between preoperative anemia and its impact on clinicopathologic parameters and survival outcomes. Analyses were performed under random- or fixed-effects meta-analysis models depending on data heterogeneity. Seven studies met the inclusion criteria comprising 1495 patients with endometrial cancer. Nearly all studies had low risk of bias. The pooled prevalence of preoperative anemia was 26.5 % (95 % CI: 18.6%-36.2%). Preoperative anemia significantly correlated with advanced FIGO stage III-IV (OR = 5.14, 95 % CI [3.36, 7.86], p < 0.00001), ≥50 % myometrial invasion (OR = 1.95, 95 % CI [1.36, 2.78], p = 0.0003), lymph node metastasis (OR = 4.46, 95 % CI [2.39, 8.30], p < 0.00001), non-endometrioid histology (OR = 3.25, 95 % CI [1.89, 5.60], p < 0.0001), adnexal involvement (OR = 5.88, 95 % CI [3.05, 10.23], p < 0.001), cervical involvement (OR = 2.91, 95 % CI [1.65, 5.11], p = 0.0002), positive peritoneal cytology (OR = 3.24, 95 % CI [1.41, 7.44], p = 0.006), preoperative thrombocytosis (OR = 6.66, 95 % CI [3.05, 14.52], p < 0.00001) and lymphovascular space invasion (OR = 3.50, 95 % CI [1.82, 6.74], p = 0.0002). High tumor grade II-III was increased in patients with preoperative anemia, yet this effect was not statistically significant (OR = 2.12, 95 % CI [0.97, 4.66], p = 0.06). Consistently, the five-year overall survival (OS) and disease-free survival (DFS) rates were significantly lower in patients with preoperative anemia when compared to those without preoperative anemia. Pooled HR showed that preoperative anemia was significantly associated with reduced DFS at univariate (HR = 3.22, 95 % CI [1.28, 8.11], p = 0.01) and multivariate (HR = 1.02, 95 % CI [1.00, 1.05], p = 0.03) analyses. Preoperative anemia predicts poor clinicopathologic and survival outcomes in patients with endometrial cancer.

Preoperative leukocytosis correlates with unfavorable pathological and survival outcomes in endometrial carcinoma: A systematic review and meta-analysis

To meta-analytically examine the frequency and prognostic impact of preoperative leukocytosis in endometrial carcinoma (EC). Five major databases were searched till 01-February-2021. Studies that evaluated the frequency of preoperative leukocytosis or its correlation with pathological and survival outcomes in EC patients were included. Data were pooled as mean differences (MD), odds ratios (OR), or hazard ratios (HR) with 95% confidence intervals. Nine retrospective studies, with low risk of bias, were included. The pooled prevalence of preoperative leukocytosis was 11.2% (95% CI: 8.2-14.3). There was a significant correlation between preoperative leukocytosis and FIGO stage III-IV (OR = 2.10, 95% CI: 1.60-2.75), ≥50% myometrial invasion (OR = 1.32, 95% CI: 1.02-1.72), lymph node involvement (OR = 1.83, 95% CI: 1.29-2.59), cervical involvement (OR = 2.29, 95% CI: 1.68-3.13), adnexal involvement (OR = 2.17, 95% CI: 1.42-3.31), and tumor size (MD = 1.10 cm, 95% CI: 0.63-1.58). However, preoperative leukocytosis did not significantly correlate with tumor grade II-III, non-endometrioid histology, peritoneal cytology, and lympho-vascular space involvement (p > 0.05). Additionally, preoperative leukocytosis correlated with higher rates of death (OR = 2.85, 95% CI: 2.03-4.00), tumor recurrence (OR = 2.36, 95% CI: 1.21-4.61), and worse overall survival at univariate and multivariate analyses (HR = 2.90, 95% CI: 2.24-3.75 and HR = 2.16, 95% CI: 1.59-2.94, respectively). As for disease-free survival, preoperative leukocytosis emerged as an independent prognostic factor on univariate (HR = 1.27, 95% CI: 1.16-1.39) but not multivariate (HR = 1.08, 95% CI: 1.00-1.18) analyses. Preoperative leukocytosis is common and correlates with poor pathological and survival outcomes in EC patients.