Cryopreservation of ovarian tissue: the biggest challenge of oncofertility.

Survival rates after cancer diagnosis and treatment have been raising through the last decades. Nowadays, oncofertility represents a useful strategy for young women affected by cancer to preserve their ovarian function and their family planning opportunity. Apart from more diffused techniques as cryopreservation of mature oocytes after controlled ovarian stimulation and gonadal downregulation with gonadotropin-releasing hormone agonist depots, the cryopreservation of the cortical region of the ovarian tissue, which contains 90% of the follicular reserve, and later autologous transplant represent a possible and intriguing strategy. Nonetheless, the safety of the procedure is still a matter of debate and is a topic of great interest in both oncologic and reproductive fields. Especially, in order to improve the efficacy of the strategy the open questions are: 1) how to search for malignant cells; 2) slow freezing vs. vitrification; 3) state of the art on the "artificial ovary." The aim of this review was to summarize the recent advances in ovarian tissue cryopreservation and present future perspectives.

Bleeding epulis gravidarum: what to evaluate?

INTRODUCTION: Hormonal changes during pregnancy may induce modifications in oral mucosa. Epulis gravidarum (EG) is an oral disease arising during pregnancy, usually regressing after delivery. A case of EG managed at our department is described and those previously reported in literature are reviewed in order to define EG clinical features for stratifying the risk of complications and the need of surgery during pregnancy as well as which factors should be considered more relevant in EG management. EVIDENCE ACQUISITION: Electronic databases (Medline, Embase, Web of Sciences, Scopus and Cochrane Library) were searched from inception of each databases until May 2021 to identify clinical studies on management of EG diagnosed during pregnancy. The aim of this review was to identify factors influencing the need and timing of surgical management. EVIDENCE SYNTHESIS: A woman with a triplet pregnancy suffering from EG, complicated by profuse bleeding, required Caesarean section (CS) given the triplet pregnancy and the impending preterm labor. The surgical removal of EG was not performed because it spontaneously regressed without consequences 40 days after delivery. Review analysis indicated that EG clinical management is dependent on types of symptoms and their severity. Multilinear regression analysis showed that operative management strategy was associated with bone loss on X-ray (t=4.23, P=0.003), while EG surgical treatment during pregnancy was associated with pain (t=-2.91, P=0.03). No significant differences were found in management strategy, according to pain (P=0.12), interference with mastication (P=0.98) and speech (P=0.36). A poor oral hygiene was described in 71% of patients as hypothetical trigger. CONCLUSIONS: EG management strategy depends on bleeding, pain and bone loss on X-ray. A multidisciplinary approach is useful to perform a rapid and appropriate diagnosis and to better evaluate pros and cons of surgery during pregnancy and following management.