Prognostic factors and oncological outcomes of ovarian yolk sac tumors: a retrospective multicentric analysis of 99 cases.

Purpose: To investigate the clinico-pathological prognostic factors and treatment outcomes in patients with ovarian yolk sac tumors (YST).

Methods: A multicenter, retrospective department database review was performed to identify patients with ovarian YST who underwent surgery between 2000 and 2017 at seven Gynecologic Oncology Centers in Turkey.

Results: The study group consisted of 99 consecutive patients with a mean age of 23.

Serum 25-Hydroxy Vitamin D Levels in Turkish Adolescent Girls with Polycystic Ovary Syndrome and the Correlation with Clinical/Biochemical Parameters.

Study Objective: Polycystic ovary syndrome (PCOS) is a common endocrinopathy among female adolescents and young women. The aim of this study was to investigate the relationship between serum 25-hydroxy vitamin D (25[OH] D) levels and metabolic parameters and other characteristics of PCOS and non-PCOS adolescents.

Design: Case-control study.

Diagnostic value of sonography for detecting endometrial pathologies in postmenopausal women with and without bleeding.

Purpose: To investigate the diagnostic value of endometrial thickness measurement on sonography in predicting endometrial pathologies in postmenopausal women with vaginal bleeding and in those with asymptomatic thickened endometrium.

Methods: Six hundred two postmenopausal women with vaginal bleeding or asymptomatic thickened endometrium were evaluated in this study. Two hundred seventy-four women with postmenopausal bleeding regardless of endometrial thickness (group 1: symptomatic) and 328 women with an incidental finding of thickened endometrium (≥5 mm) without bleeding (group 2: asymptomatic) underwent endometrial biopsy for histopathologic examination.

Comparison of pregnancy rates in PCOS patients undergoing clomiphene citrate and IUI treatment with different leading follicular sizes.

Purpose: The objective of the study was to compare the pregnancy rates in PCOS patients undergoing clomiphene citrate (CC) and intrauterine insemination (IUI) treatment with different leading follicular sizes.

Methods: A total of 358 infertile women with PCOS who underwent 563 clomiphene citrate and IUI treatment cycles were included in this prospective study. Treatment cycles were divided into three groups according to leading follicular size on the day of hCG administration: Group I: follicular size 17-18 mm (n = 177), Group II: 19-22 mm (n = 321), and Group III : >22 mm (n = 65).