Clinical, anatomical and perioperative outcomes of abdominal sacral colpopexy using autologous fascia: A systematic review of the literature.

OBJECTIVES: Although sacral colpopexy is considered the gold standard for the treatment of advanced apical prolapse, several warnings and restrictions has been delivered to urogynecological surgeons in order to avoid the implants of prosthetics meshes. The purpose of this systematic review is to investigate the role of sacral colpopexy performed with autologous tissue in literature. METHODS: a systematic review according to PRISMA guidelines was performed in June 2022 through the Medline, Web of Science and Scopus databases. Quality assessment of each article was performed according to Critical Appraisal tool of Oxford center for EBM, LoE according to SORT standards, ROBINS-I tool for methodological assessment in non-randomized trials. From 236 screened records, 7 articles were considered eligible for this systematic review. RESULTS: Collected data showed objective cure rate ranging from 94.7% to 100% in medium term follow up. Subjective cure rate was specifically investigated in 2 studies with high satisfaction rates. Complication rate ranged from 0 to 36.8%, with 90.1% graded ≤2 according to Clavien-Dindo classification. CONCLUSIONS: sacral colpopexy with autologous fascia shows satisfying outcomes in terms of safety and efficacy and may be taken in account in particular clinical situations.

The first 60 cases of robotic sacrocolpopexy with the novel HUGO RAS system: feasibility, setting and perioperative outcomes.

Introduction: We present the preliminary report of the first 60 cases of robotic sacrocolpopexy (RSCP) performed with a minimally invasive approach by using the new HUGO RAS system (Medtronic) with the aim of assessing its feasibility, safety and efficacy. Methods: Results in terms of operative time, intraoperative blood loss, post-operative pain, length of hospitalisation, intra and post-operative complications were comparable to previously described laparoscopic and robotic techniques. Results: Urogynecological assessment at three months follow up showed surgical anatomic success in 96.7% of patients (<2 POP-Q stage), while subjective cure rate was 98.3%. Conclusions: This is the first series analyzing RSCP outcomes for POP using the new Hugo RAS system. Our results suggest effectiveness both in objective and subjective outcomes, with minimal intra and post-operative complications. Larger series as well as longer follow-up are needed to better define advantages and possible disadvantages of this novel system. Our work may represent the basis of future studies to confirm its safety, efficacy and feasibility, and may provide technical notes for other centres that wish to perform RSCP through this innovative system.

Is There a Role for Bladder Biopsy in the Diagnosis of Non-Hunner Lesions Interstitial Cystitis?

INTRODUCTION: Bladder pain syndrome/interstitial cystitis (BPS/IC) is either Hunner lesion interstitial cystitis (HL IC) or non-Hunner lesion interstitial cystitis (N-HL IC), differing in the presence of HLs on cystoscopy. Cystoscopy is essential in diagnosing HL but are bladder biopsies useful in N-HL IC patients? Our objective was to assess bladder biopsy in patients with N-HL IC, evaluating whether the count of mast cells (MCs) and percentage of activated MCs could measure severity. MATERIALS AND METHODS: This is a single-centre retrospective study. INCLUSION CRITERIA: diagnosis of BPS/IC by ESSIC definition; absence of HLs. Each patient had three bladder biopsies. STATISTICAL ANALYSIS: χ2/Fischer's exact test; Wilcoxon signed-ranks test/Mann-Whitney U test. Statistical significance: p < 0.05. RESULTS: We separated 48 women into Group 1 with <50% of MCs activated and Group 2 with >50%. We compared the results of the O'Leary-Sant questionnaire between the two groups and did not find any correlation between the severity of the pathology and either the MC count in the detrusor or the percentage of activated MCs in the lamina propria or detrusor. DISCUSSION/CONCLUSION: These findings cast doubt on the usefulness of bladder biopsy for the evaluation of severity in N-HL IC.

Laparoscopic uterosacral ligament suspension: a comprehensive, systematic literature review.

OBJECTIVES: Laparoscopic uterosacral ligament suspension (LUSLS) of the vaginal apex for the treatment of pelvic organ prolapse (POP) has gained popularity. The aim of this systematic review is to investigate perioperative outcomes and complications, subjective and objective success rates and recurrence rates in women undergoing this surgical procedure. STUDY DESIGN: A systematic literature search was performed in December 2021. The critical appraisal skills program (CASP) was used to assess the methodological quality of the selected studies. The Clavien-Dindo (CD) scale and the Satava scale were used to classify periprocedural complications. Continuous variables were described as means and standard deviations while categorical were expressed as percentages of the whole group. Statistical significance was set at p < 0.05. RESULTS: 26 articles were selected and analysed, with a total population of 1401 patients. Anatomical and subjective success rates after LUSLS ranged from 79% and 100% and from 76.2% to 100% respectively. The re-operation rate varied from 2% to 4.5% in the largest cohorts. The overall complication rate was 13.6%, however grade III CD complications occurred only in 1% of patients. Ureteral complications were described in only 2 cases. CONCLUSIONS: LUSLS represent a safe and effective technique for vaginal apex resuspension in women with POP. Further larger prospective randomized studies are required to confirm these data.

Transobturator tape versus single incision sling: how are they different? Clinical outcomes and ultrasonographic features of two mid-urethral slings.

PURPOSE: Stress urinary incontinence (SUI) is usually treated with mid-urethral slings. The best approach is still debated and the relationship between slings and pelvic structures is not completely understood. The aim of this study is to identify any difference between trans-obturator tape (TOT) and single incision sling (minisling). METHODS: Patients submitted to TOT or minisling were included in the study. Q-tip and stress test, ICIQ-SF questionnaire, PGI-I validated score, and 2D/3D transvaginal ultrasound parameters were collected at 1- and 6-month follow-up. Correlations between ultrasound parameters and clinical outcomes, PGI-I and ICIq-SF, were performed. RESULTS: 61 patients were included in the study. PGI-I score was significantly lower in the minisling group than in TOT group at 1-month (p = 0.016) and 6-month follow-up (p = 0.076). The median distance between the sling and the lumen of urethra was significantly higher and the angle between the branches of the sling was significantly narrower in the minisling group. There were significant differences in distances between the sling and the bladder neck at 1-month and 6-month follow-up. An inverse correlation between angle of the branches and the Q-tip test was observed (p = 0.059 Pearson's Rho - 0.578). PGI-I correlated also with angle of the branches (p = 0.009, Pearson's Rho 0.503). CONCLUSION: Patients undergoing TOT or minisling are similarly satisfied but show differences at ultrasound exam at 1- and 6-month follow-up. Pelvic floor ultrasound could be used in a short-term follow-up to visualize the sling position and to plan the most appropriate follow-up strategy.

Redo laparoscopic sacrocolpopexy for POP recurrence: Is it the right call?

OBJECTIVES: As Laparoscopic Sacrocolpopexy (LSCP) has proven to be the gold-standard for treating Pelvic Organ Prolapse, management of recurrence after its failure is a challenge with upcoming interest. In these patients, repeat LSCP might represent a suitable surgical choice. STUDY DESIGN: We present a retrospective observational study analysing safety, feasibility and outcomes of Redo LSCP. Data of 20 patients with POP recurrence who underwent previous sacrocolpopexy were recruited, and all successfully underwent a repeat LSCP. RESULTS: Median 24-months follow-up demonstrated a statistically significant improvement of objective and subjective outcome. No intra and postoperative complications were noted. Anatomical cure rate was 95%. Subjective cure rate was 100%, with a statistically significant POP symptoms resolution and improvement of voiding and storage symptoms. We compared perioperative data and outcome of Redo patients to a population who underwent LSCP for a first-time diagnosed POP. The findings demonstrated that surgery did not differ from standard procedure in terms of intra/postoperative complications, hospital stay, blood loss, except for operative time. CONCLUSIONS: Minimally invasive Redo LSCP appears to be a safe and effective procedure in treating recurrent and symptomatic Pelvic Organ Prolapse. Our series shows low recurrence rates, comparable to data from patients who underwent their primary surgery for POP.

Laparoscopic High Uterosacral Ligament Suspension vs. Laparoscopic Sacral Colpopexy for Pelvic Organ Prolapse: A Case-Control Study.

Introduction: Laparoscopic sacral colpopexy is the gold standard technique for apical prolapse correction but it is a technically challenging procedure with rare but severe morbidity. Laparoscopic high uterosacral ligament suspension could be a valid technically easier alternative using native tissue. Material and Methods: In the period from 2015 to 2018, 600 women were submitted to laparoscopic sacral colpopexy while 150 to laparoscopic high uterosacral ligament suspension in three Italian urogynecology referral centers. We enrolled women with apical prolapse stage ≥2 alone or multicompartment descensus. To reduce allocation bias, we performed a propensity matched analysis. Women undergoing laparoscopic high uterosacral ligament suspension surgery were matched 1:2 to women undergoing laparoscopic sacral colpopexy. The cumulative proportion of relapse-free women in time was analyzed by the Kaplan-Meier method. The primary objective of this multicenter case-control retrospective study was to compare the recurrence rate while the secondary objectives were to compare feasibility, safety, and efficacy of laparoscopic sacral colpopexy and laparoscopic high uterosacral ligament suspension in surgical treatment of pelvic organ prolapse. Results: Three hundred and nine women were enrolled (103 laparoscopic high uterosacral ligament suspension; 206 laparoscopic sacral colpopexy). Median operatory time was significantly shorter in the laparoscopic high uterosacral ligament suspension group (P = 0.0001). No statistically significative difference was found in terms of estimated blood loss, admission time, intraoperative, and major early postoperative complications, postoperative pelvic pain, dyspareunia and de novo stress urinary incontinence. Surgical approach was the only independent risk factor for prolapse recurrence (RR = 6.013 [2.965-12.193], P = 0.0001). The objective cure rate was higher in the laparoscopic sacral colpopexy group (93.7 vs. 68%, 193/206 vs. 70/103, P = 0.0001) with a highly reduced risk of recurrence (RR = 5.430 [1.660-17.765]). Median follow up was 22 months. Conclusion: Both techniques are safe, feasible, and effective. Laparoscopic sacral colpopexy remains the best choice in treatment of multicompartment and advanced pelvic organ prolapse while laparoscopic high uterosacral ligament suspension could be appropriate for moderate and isolated apical prolapse when laparoscopic sacral colpopexy is not suitable for the patient or to prevent prolapse in women at high risk at the time of the hysterectomy.

Laparoscopic sacral hysteropexy versus laparoscopic sacral colpopexy plus supracervical hysterectomy in patients with pelvic organ prolapse.

INTRODUCTION AND HYPOTHESIS: The choice of whether or not to preserve the uterus in the case of patients with urogenital prolapse who undergo sacral colpopexy is still debated. We compared objective and subjective outcomes of laparoscopic sacral hysteropexy (LSHP) and laparoscopic sacral colpopexy with concomitant supracervical hysterectomy (LSCP/SCH) in patients with symptomatic pelvic organ prolapse. METHODS: This is a multicenter retrospective cohort study conducted at the Urogynecology Department of the Fondazione Policlinico Universitario A. Gemelli IRCCS of Rome and at the Diaconesses Croix Saint Simon Hospital of Paris. We collected data of 136 patients; 78 underwent LSHP and 58 underwent LSCP/SCH for pelvic organ prolapse between January 2016 and December 2017. RESULTS: Patients of the two groups had similar preoperative characteristics. All patients completed 24-month follow-up evaluation. Overall, anatomical cure rate was 84.6% and 87.9% in the LSHP group and LSCP/SCH group, respectively, without statistically significant differences. In particular, in the LSHP group the anatomical success rate was 94.9%, 92.3% and 92.3% for the apical, anterior and posterior vaginal compartment whereas in the LSHP group LSCP/SCH was 100%, 91.4% and 94.8%, respectively. Subjective success rate was 89.7% among patients who underwent LSHP and 93.1% among women who underwent LSCP/SCH (p = 0.494). The median operative time (OT) was significantly shorter in LSHP. There were no significant differences between the groups in terms of estimated blood loss, conversion to laparotomy and intra- and postoperative complications. Patients' satisfaction was high in both groups without statistical differences. CONCLUSIONS: Both laparoscopic procedures are safe and effective in the treatment of pelvic organ prolapse. LSHP can be offered as an alternative in women who are strongly motivated to preserve the uterus in the absence of abnormal uterine findings.

Laparoscopic lateral suspension for pelvic organ prolapse: A systematic literature review.

BACKGROUND: Abdominal lateral suspension with mesh represents an alternative treatment to suspend the vaginal apex. OBJECTIVES: The aim of this study was to summarize literature data regarding the anatomical and functional outcomes, and intra- and postoperative complications of this technique with minimally invasive approach (laparoscopic/robotic). SEARCH STRATEGY: Systematic literature search using MEDLINE/PubMed, SCOPUS, Web of Science. DATA COLLECTION AND ANALYSIS: Two authors extracted data on baseline characteristics (age, BMI, prior pelvic reconstructive surgery, preoperative POP stage), perioperative outcomes (operative time, estimated blood loss, intraoperative and postoperative complications, admission time), objective and subjective success rate, surgical failure, time of follow-up. Data were presented descriptively. MAIN RESULTS: Thirteen studies were included in the review. The overall number of patients for our analysis was 1066. Patients referred for laparoscopic/robotic lateral suspension were most frequently postmenopausal, aged 50 to 65 years, BMI ≥ 25 kg/m2; 22.2% were already hysterectomized, while 17% had already a previous POP surgery. Operative time ranged from 78.4 ± 29.7 to 254 ± 45 min. The overall anatomic success was more than 90% in the apical compartment and more than 88% in the anterior compartment. Subjective cure rate varies from 78.4% to 100% in medium-term follow-up. Post-operative complication grade >= 3 according to Claiven-Dindo Scale was 1.03%. Mesh erosion rate varied between 0% and 13%. CONCLUSIONS: Results coming from our systematic review suggest safety, efficacy and feasibility of minimally invasive lateral suspension with optimal anatomical and functional outcomes. Well-designed, randomized, controlled trials are required to confirm this data.

Quality of life recovery after laparoscopic high uterosacral ligament suspension: a single centre observational study.

OBJECTIVE: Laparoscopic high uterosacral ligament suspension (l-HUSLS) is a laparoscopic-transposed vaginal technique for the treatment of pelvic organ prolapse. Nowadays data regarding quality of life and sexual functions in patients who underwent l-HUSLS for pelvic organ prolapse are few and generic with most of the study investigating the anatomical outcome. For these reasons, the aim of our study is to evaluate these subjective outcomes in women undergoing this surgical procedure with the support of validated questionnaires. STUDY DESIGN: This is a retrospective study with the primary aim of analysing the quality of life, sexual function, patient satisfaction rates and anatomical outcome among patients who underwent l-HUSLS in our institution. The SPSS Version 26.0 for Windows (Statistical package for the social studies, Chicago, IL, USA) was used for the statistical analysis. RESULTS: A total of 60 patients underwent l-HUSLS between 2016 and 2018. All patients had a high grade of apical prolapse. No intraoperative and major postoperative complications were registered. The median follow-up was 24 months (24-48). PGI-I score was 1-2 in 55 (91.6 %) women. We observed a significant improvement of EQ-5D index and VAS scores from the baseline to the 2 years follow-up: from 0.72 (0.67-1) to 0.91 (0.79-1) and from 50 (30-90) to 70 (50-100) respectively (p = 0.000). All women showed a statistically significant amelioration of FSDS and ICIQ-SF scores. Anatomical success rate after 24 months was 83.7 %. CONCLUSIONS: l-HUSLS appears to be a safe, feasible and effective treatment for advanced pelvic organ prolapse with high rates of patient self-reported cure.

Minimally invasive surgery in urogynecology: a comparison of standard laparoscopic, minilaparoscopic, percutaneous surgical system, and robotic sacral colpopexy.

BACKGROUND: We compared surgical outcome of sacral colpopexy (SCP) performed with the most recent minimally invasive surgery such as 3-mm laparoscopy (Mini-LPS), percutaneous system (PSS), standard laparoscopy (LPS), and robotic surgery. METHODS: This is a multicenter retrospective cohort study conducted at Urogynecological Department of the IRCCS A. Gemelli University Polyclinic Foundation in Rome and at the Gynecological Clinic of Maggiore della Carità Hospital in Novara, and of the Polyclinic of Abano. We collected data of 115 patients who underwent laparoscopic SCP for pelvic organ prolapse between June 2017 and June 2018 using PSS, Mini-LPS, standard LPS, and da Vinci Si. RESULTS: Patients of all four groups had similar characteristics. The median operative time (OT) was significantly longer in robotic procedure compared to all other groups There were no significant differences between the four groups in terms of estimated blood loss, conversion to laparotomy, intraoperative complications and median postoperative ileus. Visual Analogue Scale (VAS) at 4 hours was significantly less for Mini-LPS compared to the other techniques. VAS at 24 hours was higher for robotic procedures than other techniques. CONCLUSIONS: Results rule out that minimize surgical invasiveness of laparoscopic techniques could bring improvements in SCP not only from a cosmetic point of view but also from a functional one without requiring longer OT and maintaining the same standard laparoscopic configuration. Even if robotic SCP is useful and safe because of its guarantee of efficiency, it cannot be considered the first choice for many women.

Laparoscopic high uterosacral ligament suspension (modified Shull technique): A case series and a step by step description of surgical procedure.

OBJECTIVE: In this series we investigate the safety, feasibility and efficacy of our laparoscopic modified Shull technique describing the fundamental aspects of this surgical procedure in order to add a new feasible abdominal approach for apex resuspension. STUDY DESIGN: A retrospective case series of 10 patients referring to our Urogynecological department for symptomatic apical prolapse, enrolled consecutively between September 2018 and November 2018. All women underwent the presented technique which we described in detail explaining the fundamental tips and tricks of our procedure. We examined perioperative details, postoperative complication- evaluated with Clavien-Dindo's classification-, anatomical outcome and subjective satisfaction, assessed with the Patient Global Impression of Improvement questionnaire. RESULTS: All women presented symptomatic apical prolapse of II-III grade. No perioperative complications including ureteral damages were recorded. There was only one case of de novo stress urinary incontinence. At 1-year follow-up the POP-Q apex was well suspended in all women with only 2 cases of asymptomatic anterior recurrence. All patients reported a complete resolution of pelvic organ prolapse (POP)-related symptoms and were fully satisfied with the treatment received. CONCLUSION: Laparoscopic modified Shull technique suggests safety, feasible and efficacy in the treatment of apical prolapse. In addition, this report represents a useful instrument for surgeon to understand key aspects of this surgical procedure allowing to him to perform the described technique in a safe and timely manner.

Laparoscopic sacral colpopexy for pelvic organ prolapse recurrence after transvaginal mesh surgery.

OBJECTIVE: Pelvic organ prolapse (POP) recurrence in transvaginal mesh surgery patients has become increasingly common, due to widespread mesh use before the FDA alert. The aim was to assess feasibility, effectiveness and safety of laparoscopic sacral colpopexy (LSCP) in recurrent POP after previous vaginal surgery with polypropylene mesh. STUDY DESIGN: Medical records of 20 patients with ≥ stage 2 POP recurrence, who underwent LSCP from January 2015 to July 2018, were retrospectively analyzed in a monocentric observational study. We analyzed operative time, intraoperative complications - defined as bowel, bladder, ureteral, or vascular injuries, post-operative complications - assessed with Clavien-Dindo's classification, and postoperative patient satisfaction - evaluated with the Patient Global Impression of Improvement questionnaire. Pre- and postoperative data were compared using t-test. RESULTS: All women presented apical prolapse recurrence regardless of mesh type implanted and most of them involved the posterior compartment. No perioperative complications or cases of mesh extrusion, de novo urinary stress, urge incontinence, dyspareunia were recorded. At 12-month follow-up the POP-Q examinations demonstrated a statistically significant improvement of all parameters with a complete resolution of bulge, voiding and storage symptoms in all patients. CONCLUSION: LSCP suggests safety, feasible and efficacy in the treatment of recurrent POP after prior transvaginal polypropylene mesh surgery. We suggest to conduct a prospective research with larger sample size to gain further insights.

Repetitive transcranial magnetic stimulation for chronic neuropathic pain in patients with bladder pain syndrome/interstitial cystitis.

AIMS: To evaluate the efficacy, safety, and tolerability of repetitive Transcranial Magnetic Stimulation (rTMS) associated with standard drug therapies for neuropathic pain that does not respond to pharmacological treatment alone in patients with Bladder Pain Syndrome/Interstitial Cystitis (BPS/IC). Secondary goals were to assess the effects of rTMS on Lower Urinary Tract Symptoms (LUTS) and Quality of Life (QOL). METHODS: Fifteen patients with BPS/IC were enrolled in this randomized, double-blind, sham stimulation-controlled, crossover study. Patients were treated for 2 weeks with either real-rTMS (for five consecutive days in 20-min sessions) or sham-rTMS (for five consecutive days in 20-min sessions). After a 6-week washout period, the patients who had previously undergone real-rTMS underwent sham-rTMS, and vice versa. Patients were rated at each visit by means of questionnaires on pain, urinary disturbances, depression, and QOL. RESULTS: The statistical analysis revealed significant effects of real-rTMS, when compared with sham-rTMS, on pain (in the VAS, Functional Neuropathic Pelvic Pain, Neuropathic Pain Symptom Inventory, McGill questionnaire, and Central Sensitization Inventory), urinary LUTS (in the Overactive Bladder Questionnaire score, bladder emptying, and daily urinary frequency), and QOL (in the subscores of the SF-36 related to physical pain and to emotional status). No serious adverse events were reported during the study. CONCLUSIONS: The results of this study show that rTMS applied with an H-coil over the M1 in the area corresponding to the pelvic region in patients with BPS/IC appears to improve chronic pelvic pain (CPP) and associated urinary disorders.

Laparoscopic supracervical hysterectomy and sacral colpopexy for pelvic organ prolapse with percutaneous surgical system: Results from a pilot study.

OBJECTIVE: The aim of the study was to report our preliminary experience of supracervical 2 hysterectomy followed by sacral colpopexy performed with the Percuvance ™ PSS in terms of feasibility, effectiveness and safety. STUDY DESIGN: Between Jan 2017 and Feb 2017 10 patients affected by POP were enrolled in the present study. All patients undergoing supracervical hysterectomy followed by sacral colpo-cervicopexy with the Percuvance ™ PSS. RESULTS: The reported series consisted of 10 patients undergoing supracervical hysterectomy followed by sacral colpopexy with a median age of 63 years (range 55-71 years) and a median BMI (body mass index) of 24 (range 21-26). A median operative time of 123 min (range 103-134 min) and a median estimated blood loss (EBL) of 40 ml (range 20-60 ml) were registered. No conversions to standard laparoscopy or laparotomy were required and no intraoperative complications occurred. At the discharge all patients were completely satisfied with the cosmetic result and postoperative pain control. During 3 months urogynecological follow-up no patient showed surgical anatomic failure (>2 POP-Q stage)and the degree of overall satisfaction of the cosmetic results was confirmed by the surgeon and the patient equally. CONCLUSIONS: The PSS supracervical hysterectomy plus sacral colpopexy is a feasible and effective approach with good results in terms of operative time, cosmesis, postoperative pain and length of hospitalization.

Impact of aromatase inhibitor treatment on vertebral morphology and bone mineral density in postmenopausal women with breast cancer.

OBJECTIVE: The aim of this study was to evaluate the impact of aromatase inhibitor (AI) treatment on vertebral morphology by vertebral fracture assessment in postmenopausal women with early-stage breast cancer. METHODS: A clinical cross-sectional study was conducted. A group of 156 postmenopausal women with breast cancer (mean [SD] age, 60.4 [10.1] y; mean [SD] time since menopause, 11.7 [9.2] y) was included in the study. Eighty-two women received AI treatment, whereas 74 women did not. Women underwent extensive medical history check and risk factor assessment together with vertebral morphology and bone mineral density (BMD) evaluation. RESULTS: In the studied population, the prevalence of vertebral fractures identified by vertebral fracture assessment was 16.6%. Multivariate analysis showed that AI treatment was significantly associated with vertebral fractures (adjusted P < 0.04). Women receiving AI treatment had a higher prevalence of vertebral fractures than women not treated with AIs (25.6% vs. 4%). The risk of vertebral fractures in women treated with AIs was significantly higher than in non-AI-treated women (adjusted odds ratio, 4.7; P < 0.005). Vertebral fractures of the highest grade were identified at the lumbar spine. Women treated with AIs had a significantly lower BMD than women not treated with AIs (P < 0.01). Reduction of BMD was significantly associated with length of therapy, whereas there was no association between length of treatment and risk of vertebral fractures. CONCLUSIONS: AI treatment severely impacts vertebral morphology. Our study demonstrates a high prevalence of asymptomatic vertebral fractures in women treated with AIs.

Reference charts for fetal corpus callosum length: a prospective cross-sectional study of 2950 fetuses.

OBJECTIVES: The purpose of this study was to establish reference charts for fetal corpus callosum length in a convenience sample. METHODS: A prospective cross-sectional study was conducted at the Artemisia Fetal-Maternal Medical Center between December 2008 and January 2012. Among 16,975 fetal biometric measurements between 19 weeks and 37 weeks 6 days' gestation, 3438 measurements of the corpus callosum (20.3%) were available. After excluding 488 measurements (14.2%), a total of 2950 fetuses (85.8%) were considered and analyzed only once. Parametric and nonparametric quantile regression models were used for the statistical analysis. To evaluate the robustness of the proposed reference charts with respect to various distributional assumptions on the sonographic measurements at hand, we compared the gestational age (GA)-specific reference curves produced by the statistical methods used. RESULTS: The mean corpus callosum length was 26.18 mm (SD, 4.5 mm; 95% confidence interval, 26.01-26.34 mm). The linear regression equation expressing the length of the corpus callosum as a function of GA was length (mm) = -11.17 + 1.62 × GA. The correlation between the dimension and gestation was expressed by the coefficient r = 0.83. Normal mean lengths according the parametric and nonparametric methods were defined for each week of gestation. CONCLUSIONS: This work provides new quantile-based reference charts for corpus callosum length measurements that may be useful for diagnosis of congenital corpus callosum anomalies in fetal life.