Tajossadat Allameh, Fereshteh Mohammadizadeh,
Volume 5, Issue 3 (7-2007)
Abstract
Background: According to age, history and physical examination findings, there are different diagnoses including anatomic lesions for abnormal uterine bleeding (AUB). In these conditions, hysteroscopy can be performed as a diagnostic and therapeutic procedure.
Objective: The aim of this study was defining the diagnostic value of hysteroscopy in evaluating uterine cavity in patients with AUB compared to pathologic findings.
Materials and Methods: This was a prospective descriptive-analytic study in which hysteroscopy was performed for 105 patients with AUB .The patients were in reproductive and perimenopausal (86.7%) or postmenopausal ages (13.3%). Hysteroscopy was done and biopsy was taken from any pathology. After removing of hysteroscope, dilatation and curettage were done. Both samples were sent for pathologist. At the end, reports of hysteroscopic findings were compared with pathologic results.
Results: Diagnostic value of hysteroscopy in evaluation of uterine cavity showed 100% sensitivity, 80.5% specificity, 88.9% positive predictive value (PPV) and 100% negative predictive value (NPV). Sensitivity, specificity, PPV and NPV of the procedure for endometrial polyp were 93%, 100%, 100%, and 95.4%, respectively. These results were respectively 100%, 96.4%, 88% and 100% for submucosal myoma, and 25%, 89.7%, 12.5% and 93.3% for endometrial hyperplasia.
Conclusion: The results of this study show that hysteroscopy is a reliable method for evaluation of AUB, especially in benign lesions such as endometrial polyp and submucosal myoma and it can be used as the first line diagnostic method for these abnormalities. However hysteroscopy without directed biopsy has insufficient value for diagnosing endometrial hyperplasia.
Ali Abedelahi, Mojdeh Salehnia, Allameh Abdolamir, Ebrahim Hajizadeh,
Volume 7, Issue 2 (7-2009)
Abstract
Background: Many attempts have done to improve cryopreservation of mammalian ovaries using simple, economical and efficient technique “vitrification”.
Objective: The aim of the present study was to compare the mouse ovaries cryopreservation by direct cover vitrification (DCV) using different concentrations of ethylene glycol (EG) with conventional vitrification methods (CV).
Materials and Methods: Ninety NMRI mice were sacrificed by cervical dislocation; their ovaries were divided into three main experimental groups: control or non-vitrified group, CV group and DCV groups with 4, 6 and 8M EG as cryoprotectant. After vitrification-warming, the viability of mechanically isolated follicles and the morphology of ovarian follicles by light and electron microscopes were studied.
Results: The normality of primary and preantral follicles in non-vitrified and CV groups were higher than those achieved by DCV groups (p<0.001). The survival rates of isolated follicles in non-vitrified, CV and DCV groups with 4M, 6M and 8M ethylene glycol were 98.32, 96.26, 84.10, 85.46 and 84.56 %, respectively and in DCV groups it was lower than other groups (p<0.001). The ultrastructure of ovarian follicles was well preserved in CV technique. The follicles in DCV groups appeared to have vacuolated oocyte with nuclear shrinkage and irregular distribution of cytoplasmic organelles. Their mitochondria were located mainly in the sub cortical part of the oocyte and the granulosa cells demonstrated some signs of degeneration.
Conclusion: DCV of mouse ovarian tissue using only EG has induced some alteration on the fine structure of follicles. The integrity of mouse ovarian tissue was affected by DCV technique more than CV.
