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Head and neck cancer (HNC) patients benefit from craniofacial reconstruction, but no clear guidance exists for rehabilitation timing. This meta-analysis aims to clarify the impact of oncologic treatment order on implant survival. An algorithm to guide placement sequence is also proposed in this paper. PubMed, Embase, and Web of Science were searched for studies on HNC patients with ablative and fibula-free flap (FFF) reconstruction surgeries and radiotherapy (RTX). Primary outcomes included treatment sequence, implant survival rates, and RTX dose. Of 661 studies, 20 studies (617 implants, 199 patients) were included. Pooled survival rates for implants receiving >60 Gy RTX were significantly lower than implants receiving < 60 Gy (82.8% versus 90.1%, P =0.035). Placement >1 year after RTX completion improved implant survival rates (96.8% versus 82.5%, P =0.001). Implants receiving pre-placement RTX had increased survival with RTX postablation versus before (91.2% versus 74.8%, P <0.001). One hundred seventy-seven implants were placed only in FFF with higher survival than implants placed in FFF or native bone (90.4% versus 83.5%, P =0.035). Radiotherapy is detrimental to implant survival rates when administered too soon, in high doses, and before tumor resection. A novel evidence-based clinical decision-making algorithm was presented for utilization when determining the optimal treatment order for HNC patients. The overall survival of dental prostheses is acceptable, reaffirming their role as a key component in rehabilitating HNC patients. Considerations must be made regarding RTX dosage, timing, and implant location to optimize survival rates and patient outcomes for improved functionality, aesthetics, and comfort.
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Implantes Dentales , Peroné , Colgajos Tisulares Libres , Neoplasias de Cabeza y Cuello , Humanos , Peroné/trasplante , Neoplasias de Cabeza y Cuello/cirugía , Neoplasias de Cabeza y Cuello/radioterapia , Procedimientos de Cirugía Plástica/métodos , AlgoritmosRESUMEN
OBJECTIVE: This study evaluates the geospatial distribution of cleft lip and/or cleft palate (CL/P) care in the United States, assesses disparities between families with and without one-hour proximity to CL/P care, and recommends interventions for improving access. DESIGN: We identified American Cleft Palate Craniofacial Association-approved CL/P teams and calculated a one-hour driving radius around each clinic. We then used census data to compare risk factors for developing cleft (i.e., incidence risk factors) and obstacles to care (i.e., access risk factors) between counties with and without one-hour proximity. RESULTS: We identified 187 CL/P teams in 45 states. Most were in the South (n = 60, 32.0%), though children in the Middle Atlantic had the greatest access to care. Alabama, Mississippi, Tennessee, and Kentucky had the least access. Children without access were 39% more likely to have gestational tobacco exposure, 8% more likely to have gestational obesity exposure, and 28% less likely to have health insurance (p < 0.01). Children without access in the South were 29% more likely to have a low birth weight and 46% more likely to be living below the poverty line (p < 0.01). Children with access were twice as likely to live in immigrant families and 7-times more likely to speak English as a second language. CONCLUSIONS: Pronounced disparities affect patients with and without one-hour access to CL/P care. Interventions should address care costs for patients living furthest without access and language barriers for patients with access that speak English as a second language.
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OBJECTIVE: As the awareness of the accompanying morbidity of placenta accreta spectrum (PAS) has increased over recent decades. We sought to analyze the precision and reliability of the currently available content regarding PAS on YouTube. STUDY DESIGN: A YouTube search was performed on June 17, 2019 by using the search terms "placenta accreta," "PAS," and "invasive placentation." Search results were sorted by relevance, and up to 200 videos per search term were systematically evaluated by four independent reviewers. A quality assessment checklist relating to aspects of PAS was developed with a Likert's scale from 0 to 12 points to quantify video content. Videos were classified as poor educational quality (grade 0 to ≤4), moderate quality (grade >4-8), and high quality (grade >8-12). RESULTS: Of the 318 videos identified, 99 videos met inclusion criteria. The majority of videos (61.6%) were produced by a professional source, that is, appearing to be from a hospital, university, or educational service. Of the remaining videos, 16.2% were classified as personal, that is, posted from personal YouTube accounts and depicting a personal or family member experience, and 22.2% were classified as other. The majority of the "other" category consisted of news segments and short clips from talk shows. Overall, 60.6% of videos were of poor educational quality, 32.3% were of moderate quality, and 7.1% were deemed high quality. All seven of the high-quality videos were produced by a professional source and intended for an audience of medical professionals. There were neither high-quality videos intended for the general public nor the likely affected and relevant patient population. CONCLUSION: This study suggests that the currently available videos on YouTube regarding PAS are poor educational sources for patients seeking information, and demonstrates a need for high-quality content videos produced by medical professionals specifically focused on meeting the needs of patient population. KEY POINTS: · Awareness of the accompanying morbidity of placenta accreta spectrum has increased over recent decades.. · YouTube videos are poor educational sources for patients seeking information regarding PAS.. · YouTube videos and all social media warrant improvements regarding patient's information..
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Placenta Accreta , Medios de Comunicación Sociales , Humanos , Femenino , Reproducibilidad de los Resultados , Grabación en Video , Difusión de la Información/métodosRESUMEN
The aim of this study was to evaluate an oocyte pick-up (OPU) simulation training program for residents using the high fidelity PickUpSimTM (Accurate, Cesena, Italy) simulator. The authors carried out an observational study during an OPU simulation workshop. A successful scenario was defined as an oocyte retrieval rate ≥70% without any complications. Forty-six residents affiliated to 23 different French university hospitals were included, and 37/46 (80.4%) of them successfully completed the scenario with a mean time of 3.4 ± 1.1 minutes. The oocyte retrieval rate was 442/561 (78.8%). All residents found training beneficial and 41/46 (87%) were in favour of having simulation-based training programs for OPU in their reproductive medicine departments. All residents who had previous experience with OPU (11/11) recommended the use of a simulator before performing OPU. This study confirms that high-fidelity OPU simulation is a simple and efficient method for training residents.Impact statementWhat is already known on this subject? Simulator-based training has been shown to be effective and useful for oocyte pick-up (OPU) training.What the results of this study add? All residents found the simulation program beneficial and formative, with 80% successfully completing their scenarios in a mean time of 3.4 ± 1.1 minutes. All residents who had previous experience with OPU recommended the use of a simulator before performing OPU.What the implications are of these findings for clinical practice and/or further research? Prospective studies are needed to confirm the short- and long-term positive clinical impact of OPU simulation training programs.
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Ginecología/educación , Internado y Residencia/métodos , Obstetricia/educación , Recuperación del Oocito/métodos , Entrenamiento Simulado/métodos , Estudios de Factibilidad , Femenino , Humanos , Embarazo , Encuestas y CuestionariosRESUMEN
OBJECTIVES: To provide an overview of perinatal outcomes in prenatally diagnosed spontaneous chorioamniotic separation (sCAS). METHODS: A systematic search of the literature was performed from inception to July 2019, including PubMed, Ovid MEDLINE, and Ovid EMBASE. All studies reporting prenatally diagnosed sCAS after 16 weeks' gestation in singleton pregnancies were eligible. Two independent reviewers used standardized forms for data abstraction. RESULTS: Of 408 screened abstracts, 17 studies reporting 118 cases of sCAS were included. Among 113 cases with delivery outcomes, preterm birth (PTB) occurred in 60 (53.1%, 95% confidence interval [CI] 43.9-62.3%). Intrauterine fetal demise (IUFD) occurred in seven (6.2%, 95% CI 1.8-10.6%) cases, with four due to cord strangulation. Spontaneous abortion occurred in one (0.88%, 95% CI -0.84-2.6%) case. Among 104 cases with postnatal follow-up, there were six (5.8%, 95% CI 1.3-10.3%) neonatal deaths and one (0.96%, 95% CI -0.91-2.8%) infant death. Perinatal mortality (IUFD and neonatal deaths) was 11.0% (95% CI 5.4-16.7%). CONCLUSIONS: sCAS may be associated with increased risk of PTB, however, the available data are largely case reports and series. Antepartum surveillance after viability can be considered due to risk of cord accidents. Prospective study is necessary to understand the clinical implications of sCAS.
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Membranas Extraembrionarias/diagnóstico por imagen , Ultrasonografía Prenatal , Adulto , Femenino , Humanos , Recién Nacido , Mortalidad Perinatal , Embarazo , Resultado del Embarazo , Nacimiento Prematuro/etiologíaRESUMEN
BACKGROUND: Ischiorectal fossa tumors are rare. OBJECTIVE: This study reviews a single institution's series of ischiorectal tumors with comparison against presacral tumors and assesses the utility of preoperative biopsy and angioembolization. DESIGN: This is a retrospective study. SETTINGS: This study was conducted at a quaternary referral center. PATIENTS: All patients with ischiorectal tumor treated between February 1995 and April 2017 were retrospectively reviewed. Tumors extending secondarily into the ischiorectal fossa and inflammatory pathologies were excluded. INTERVENTIONS: Preoperative biopsy, neoadjuvant therapy, angioembolization, and surgical excision of these tumors were reviewed. MAIN OUTCOME MEASURES: Demographic, perioperative, pathological, and oncologic outcomes were evaluated. RESULTS: Twenty-four patients (15 female; median age 54) were identified. Two-thirds were symptomatic. Forty-six percent had a palpable mass. All patients had CT and/or MRI. Fifty percent had a preoperative biopsy, of which 83% were diagnostic, and management was altered in 50%. All patients underwent surgical excision. Fifty-five percent had local excision, 38% had radical pelvic excision, and 8% had total mesorectal excision. Two patients had preoperative angioembolization. Both had successful R0 local excision. Morbidity occurred in 25%, with 1 major complication. There was no 30-day mortality. Histopathology demonstrated 17 soft tissue tumors (3 malignant), 2 GI stromal tumors, 1 neuroendocrine tumor, 1 Merkel cell carcinoma, 1 basaloid carcinoma, 1 epidermal cyst, and 1 lipoma. R0 resection was achieved in 75%. All patients were alive after a median follow-up of 33 months. Four patients developed recurrence at a median 10 months postoperatively. All recurrences were malignant, and 75% had had a R1 resection. LIMITATIONS: This study is limited by its small numbers. The quaternary institution source may introduce bias. CONCLUSIONS: Ischiorectal fossa tumors are heterogeneous and more likely to be malignant than presacral tumors. Biopsy can be useful if a malignant diagnosis is suspected and changes management in 50% of cases. Preoperative embolization may be useful for large vascular tumors. R0 resection is important to minimize recurrence. See Video Abstract at http://links.lww.com/DCR/A779.
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Embolización Terapéutica , Tumores del Estroma Gastrointestinal/terapia , Terapia Neoadyuvante , Neoplasias Pélvicas/terapia , Neoplasias de los Tejidos Blandos/terapia , Procedimientos Quirúrgicos Operativos , Adulto , Anciano , Biopsia , Carcinoma de Células de Merkel/diagnóstico por imagen , Carcinoma de Células de Merkel/patología , Carcinoma de Células de Merkel/terapia , Procedimientos Quirúrgicos del Sistema Digestivo , Quiste Epidérmico/diagnóstico por imagen , Quiste Epidérmico/patología , Quiste Epidérmico/terapia , Femenino , Tumores del Estroma Gastrointestinal/diagnóstico por imagen , Tumores del Estroma Gastrointestinal/patología , Humanos , Lipoma/diagnóstico por imagen , Lipoma/patología , Lipoma/terapia , Imagen por Resonancia Magnética , Masculino , Mesenterio/cirugía , Persona de Mediana Edad , Tumores Neuroendocrinos/diagnóstico por imagen , Tumores Neuroendocrinos/patología , Tumores Neuroendocrinos/terapia , Tempo Operativo , Diafragma Pélvico/cirugía , Neoplasias Pélvicas/diagnóstico por imagen , Neoplasias Pélvicas/patología , Tomografía de Emisión de Positrones , Cuidados Preoperatorios , Procedimientos de Cirugía Plástica , Recto/cirugía , Estudios Retrospectivos , Neoplasias de los Tejidos Blandos/diagnóstico por imagen , Neoplasias de los Tejidos Blandos/patología , Tomografía Computarizada por Rayos XRESUMEN
BACKGROUND: In high-resource settings, biomarkers of angiogenic balance, such as the soluble fms-like tyrosine kinase-1 (sFlt1)/placental growth factor (PlGF) ratio, have been studied extensively to aid in evaluation of patients with suspected preeclampsia (PE), and have been incorporated into the 2021 International Society for the Study of Hypertension in Pregnancy definition of PE. The utility in under-resourced settings has not been as well characterized. OBJECTIVE: This analysis sought to identify the role of the sFlt1/PlGF ratio in the evaluation of patients with or without hypertension who are suspected of having PE without other diagnostic information. STUDY DESIGN: This is a secondary analysis of a prior prospective study of patients who were presented with suspected PE at ≥20+0 weeks' gestation at a single academic tertiary care center. Patients were recruited in the parent study from July 2009 to June 2012. In the original study, clinicians were masked to biomarker results, and patients were followed by chart review. In this analysis, the performance of the sFlt1/PlGF ratio (≤38, >38, or >85) was assessed alone in identifying both hypertensive and non-hypertensive patients at risk of evolving into PE with severe features (PE-SF; American College of Obstetricians and Gynecologists' definition) within two weeks of the triage visit (PE-SF2). Hypertension was defined as a blood pressure (BP)≥140/90 mmHg. RESULTS: There were 1043 patients included in the analysis; of whom, 579 (55.5%) and 464 (44.5%) presented with or without hypertension, respectively. In triage, 332 (75.4%) of hypertensive patients presented due to BP concerns, and the remainder were evaluated due to other features (new-onset headache, proteinuria, or edema). On triage evaluation, 66.8% of all patients had a normal sFlt1/PlGF ratio ≤38, and 17.0% had an elevated ratio >85. Among hypertensive patients, a sFlt1/PlGF ratio ≤38 was a good rule-out test for PE-SF2 (negative likelihood ratio [LR-] of 0.15), and a ratio >85 was a good rule-in test (positive likelihood ratio [LR+] of 5.75). Among normotensive patients, sFlt1/PlGF was useful as a rule-in test for ratio >38 (LR+ 5.13) and >85 (LR+ 12.80). Stratified by gestational age, sFlt1/PlGF continued to be a good rule in and good rule out test at <35 weeks among those with hypertension but did not have good test performance ≥35 weeks. sFlt1/PlGF had a good test performance as a rule in test for >85 regardless of gestational age. In triage, 4.3% (30/693) of patients with sFlt1/PlGF ratio <38 had concurrent laboratory evidence of PE, compared with 15.9% (28/176) patients with ratio >85. CONCLUSION: These findings support the potential for the use of sFlt1/PlGF and BP measurement alone in resource-limited settings where other laboratory tests or clinical expertise are unavailable for risk stratification. Performance of the biomarker varied by the presence of hypertension and gestational age.
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OBJECTIVE: This study examined whether use of bedside medication delivery (Meds to Beds, M2B) or on-campus pharmacy at discharge was associated with improved postpartum blood pressure (BP) control compared to outside pharmacy use in patients with hypertensive disorders of pregnancy (HDP). STUDY DESIGN: This was a secondary analysis of 357 patients with HDP enrolled in STAMPP-HTN (Systematic Treatment and Management of Postpartum Hypertension Program) who were discharged from delivery admission with antihypertensives between October 2018 and June 2020. Patients were grouped by discharge medication location: M2B/on-campus pharmacy (on-site) versus outside pharmacy (off-site). MAIN OUTCOME MEASURES: The primary outcome was BP values at the immediate postpartum visit. Secondary outcomes included six-week visit BP values, attendance at both visits, and readmission within six weeks. RESULTS: Median BP values were no different based on pharmacy location at immediate postpartum visit for both systolic ((135 [IQR 127, 139] on-site vs 137 [127, 145] off-site, p = 0.22) and diastolic (81 [74, 91] vs 83 [76, 92], p = 0.45) values. Similar findings were noted at six weeks. Patients who used an off-site pharmacy had higher attendance rates at the immediate postpartum visit but this difference was attenuated after adjusting for group differences (OR 0.67 [95 % CI 0.37-1.20], p = 0.18). Readmission rates were also not different between groups (12.2 % on-site vs 15.8 % off-site pharmacy, p = 0.43). CONCLUSION: In the context of a preexisting multicomponent HDP quality improvement program, on-campus pharmacy and bedside medication delivery use was not associated with additional improvement in postpartum BP control, follow-up rates, or readmission rates.
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Antihipertensivos , Hipertensión Inducida en el Embarazo , Alta del Paciente , Periodo Posparto , Humanos , Femenino , Embarazo , Adulto , Antihipertensivos/administración & dosificación , Antihipertensivos/uso terapéutico , Hipertensión Inducida en el Embarazo/tratamiento farmacológico , Presión Sanguínea/efectos de los fármacos , Readmisión del Paciente/estadística & datos numéricosRESUMEN
Background: Immunotherapy has transformed breast cancer management. However, it can be challenging to remain familiar with the adverse events, contraindications, and perioperative recommendations for each agent. Methods: We used FDALabel to identify all Food and Drug Administration-approved immunotherapies indicated for the treatment of breast cancer. We extracted details regarding warnings and precautions, indications, and adverse events from each package insert. Results: We identified nine immunotherapies belonging to three classes: anti-human epidermal growth factor receptor 2 (HER2) agents, anti-programmed cell death protein 1 (PD-1) agents, and anti-trophoblast cell-surface antigen 2 (TROP-2) agents. Cardiotoxicity, including heart failure and cardiomyopathy, was common among those receiving anti-HER2 agents, and hypothyroidism was common among patients receiving the anti-PD-1 agent. The anti-TROP-2 agent was associated with diarrhea and neutropenia. Given the adverse event profile for each drug, we recommend preoperative evaluation components, including transthoracic echocardiography, liver function tests, and thyroid panels. We also indicate here which immunotherapies raise concern for venous thromboembolism, hematoma, and infection. Conclusions: Using data from clinical trials, we recommend a preoperative evaluation tailored to the immunotherapeutic regimen of individual patients.
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Background: Lower extremity trauma can have a significant impact on a patient's quality of life. The LIMB-Q is a recently developed and validated patient-reported outcome measure that assesses patient-specific outcomes and experience of health care. The aim of this study was to translate and linguistically validate the LIMB-Q from English to German. Methods: The translation was performed by combining World Health Organization and Professional Society for Health Economics and Outcomes Research guidelines. The process consisted of forward translations, a backward translation, expert panel meetings, cognitive debriefing interviews with patients, and several rounds of discussion and reconciliation with the creators of LIMB-Q. The goal was to obtain a culturally and conceptually accurate translation of LIMB-Q into German for use in Switzerland. Results: From the two forward translations, there was one primary discrepancy between the two translators that was discussed to determine the most conceptually accurate translation. From the backward translations, there were 63 items that required discussion and re-translation. Nine patients participated in the cognitive debriefing interviews, which led to three items being modified. The translation process led to a linguistically validated and conceptually equivalent German version of the LIMB-Q. Conclusions: The German (Switzerland) version of LIMB-Q is now available. This will offer a valuable tool for lower extremity trauma research and clinical care in German-speaking populations.
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OBJECTIVES: (1) To investigate the reproducibility of total fetal lung volume (TFLV) measurements using a free 3D modeling software (3DSlicer); (2) To correlate these measurements with lung-to-head ratio (LHR) or TFLV measured using PACS and; (3) To determine the role of 3DSlicer in predicting perinatal outcomes in cases with congenital diaphragmatic hernia (CDH) who had fetal tracheal occlusion (FETO). METHODS: Retrospective cohort study between 2012 and 2017 at Texas Children's Hospital (2011-2017), including all patients who underwent FETO for CDH. LHR was measured by ultrasound and TFLV was measured by MRI at the time of referral and 6 weeks after FETO using 3DSlicer and PACS. We evaluated intra- and inter-rater reliability of TFLV measurement using 3DSlicer, infant survival to 1 year, need for ECMO and pulmonary hypertension. RESULTS: The intra- and inter-rater reliability of TFLV measured with 3DSlicer was excellent before and after FETO (Intra-class correlation coefficient: 0.98-0.99 and 0.94-0.99, respectively). There was a good correlation between TFLV measured with PACS and with 3DSlicer before and after FETO (r = 0.78 and r = 0.99, respectively). Similarly, there was a good correlation between TFLV measurements using PACS or 3DSlicer and LHR after FETO (r = 0.86 and r = 0.88, respectively). Infants who survived to 1 year had a significantly higher TFLV evaluated with 3DSlicer before FETO compared to non-surviving infants (OR = 1.16[1.1-1.3], p = 0.03) as well as a significantly higher TFLV evaluated by 3DSlicer after FETO (OR = 1.2[1-1.4], p = 0.04). CONCLUSION: Lung volume measurements using free 3DSlicer in infants with severe CDH who underwent FETO are reproducible and reliable, and have comparable predictive capability for survival as those measured using conventional software.
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Hernias Diafragmáticas Congénitas , Niño , Análisis Costo-Beneficio , Femenino , Hernias Diafragmáticas Congénitas/diagnóstico por imagen , Hernias Diafragmáticas Congénitas/cirugía , Humanos , Lactante , Pulmón/diagnóstico por imagen , Mediciones del Volumen Pulmonar , Embarazo , Reproducibilidad de los Resultados , Estudios Retrospectivos , Texas , Ultrasonografía PrenatalRESUMEN
OBJECTIVES: To investigate the perinatal outcomes of women with a history of female genital mutilation (FGM) who underwent clitoral reconstruction (CR) compared with women with FGM who did not undergo CR. MATERIAL AND METHODS: Retrospective case-control study at Angers University Hospital, between 2005 and 2017. INCLUSION CRITERIA: pregnant women >18 years who underwent CR after FGM. Only the first subsequent delivery after CR was included. Each woman with CR was matched for age, ethnicity, FGM type, parity, and gestational age at the time of delivery with two women with FGM who did not undergo CR during the same period of time. At birth, the main outcomes were the need for episiotomy and having an intact perineum after delivery. RESULTS: 84 women were included (28 in the CR group; 56 in the control group). In the CR group, patients required significantly fewer episiotomies (5/17[29.4 %]) compared to the control group (28/44[63.6 %], p = 0.02), even after excluding operative vaginal deliveries (2/13[15.4 %] vs 21/36[58.3], p < 0.01). CR reduces the risk of episiotomy (aOR = 0.15, 95 %CI [0.04-0.56]; p < 0.01) after adjusting on the infant weight and the need for instrumental delivery. In the CR group, 47 % of the patients had an intact perineum after delivery, compared to 20.4 % in the control group (p = 0.04). CR increases the odds of having an intact perineum at birth by 3.46 times (CI95 %[1.04-11.49]; p = 0.04). CONCLUSION: CR after FGM increases the chances of having an intact perineum after delivery by 3.46 times and reduces the risk of episiotomy by 0.15 times compared to women with FGM who did not underwent CR.
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Circuncisión Femenina/efectos adversos , Clítoris/cirugía , Parto Obstétrico , Procedimientos de Cirugía Plástica/métodos , Adulto , Estudios de Casos y Controles , Intervalos de Confianza , Episiotomía/estadística & datos numéricos , Femenino , Humanos , Análisis por Apareamiento , Perineo/lesiones , Embarazo , Estudios Retrospectivos , Adulto JovenRESUMEN
OBJECTIVE: To estimate the significance of the association between mid-trimester maternal serum alpha-fetoprotein (MSAFP) level and fetal neuroanatomic findings in cases of open neural tube defect (ONTD). METHODS: Retrospective study of patients referred for prenatal ONTD repair between 2012 and 2018. Cases were classified into three groups based on their MSAFP level: 1)High MSAFP (>3.8MoM - n = 22), 2)Moderately high MSAFP (≤3.8 and ≥2.5MoM - n = 28), 3)Normal MSAFP (<2.5MoM - n = 18). MRI scans at the time of referral were used to assess the relationship between MSAFP and: A)Type of ONTD; B) Ventriculomegaly; C) Size of the myeloschisis lesion; D) Volume of myelomeningocele; E) Anatomical level of the lesion (LL). RESULTS: Having a high MSAFP level was more likely to be associated ventriculomegaly at mid-gestation than a moderately high or normal MSAFP level (OR = 8.4;CI95[0.9-73.4];p = 0.05 and OR = 2.8;CI95[0.9-8.8];p = 0.07). There were no differences between the three groups regarding type of lesion, size of the myeloschisis lesion, anatomic LL, or volume of the myelomeningocele sac. Myeloschisis cases with normal MSAFP had a larger surface area when compared to myeloschisis cases with moderately high MSAFP (219.8[104.4-551] vs 155.4[38.5-502.4] mm², p = 0.04). CONCLUSION: A 2nd trimester MSAFP level >3.8MoM in a fetus with ONTD is associated with mid-gestation ventriculomegaly.
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Defectos del Tubo Neural , alfa-Fetoproteínas , Femenino , Feto , Humanos , Defectos del Tubo Neural/diagnóstico por imagen , Embarazo , Segundo Trimestre del Embarazo , Estudios RetrospectivosRESUMEN
BACKGROUND: Mouse models are beneficial to understanding neural networks given a wide array of transgenic mice and cell-selective techniques. However, instrumentation of mice for neurophysiological studies is difficult. Often surgery is prolonged with experimental error arising from non-concurrent and variable implantations. NEW METHOD: We describe a method for the rapid, reproducible and customizable instrumentation of mice. We constructed a headplate that conforms to the mouse skull surface using script-based computer aided design. This headplate was then modified to enable the friction-fit assembly prior to surgery and printed with a high-resolution resin-based 3D printer. Using this approach, we describe an easily customized headplate with dural screws for electrocorticography (ECoG), electromyogram (EMG) electrodes, cannula hole and two microdrives for local field potential (LFP) electrodes. RESULTS: Implantation of the headplate reliably takes less than 40â¯min, enabling a cohort of eight mice to be implanted in one day. Good quality recordings were obtained after surgical recovery and the headplate was stable for at least four weeks. LFP electrode placement was found to be accurate. COMPARISON WITH EXISTING METHODS: While similar approaches with microelectrodes have been used in rats before, and related approaches exist for targeting one brain region with tetrodes, we do not know of similar head-plates for mice, nor a strictly source-code and easily reconfigurable approach. CONCLUSIONS: 3D printing and friction-fit pre-assembly of mouse headplates offers a rapid, easily reconfigurable, consistent, and cost-effective way to implant larger numbers of mice in a highly reproducible way, reducing surgical time and mitigating experimental error.
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Encéfalo , Electrocorticografía , Animales , Electrodos Implantados , Ratones , Microelectrodos , Impresión Tridimensional , RatasRESUMEN
BACKGROUND: Cytoreductive surgery (CRS) and perioperative intraperitoneal chemotherapy (PIC) has been recognized as a treatment option for pseudomyxoma peritonei. This study reports the survival outcomes, clinicopathological prognostic factors, and a learning curve from a single institution's experience. METHODS: Patients with pseudomyxoma peritonei underwent CRS and PIC, which was comprised of hyperthermic intraperitoneal chemotherapy (HIPEC) and/or early postoperative intraperitoneal chemotherapy (EPIC), according to a standardized treatment protocol in our institution. Clinicopathological factors were analyzed to determine their prognostic value for survival using univariate and multivariate analysis. Time period comparison was performed to study the effect of a learning curve. RESULTS: A total of 106 patients (43 men and 63 women) were treated. The mortality rate was 3% and severe morbidity rate was 49%. The median follow-up was 23 (range, 0-140) months. The overall median survival was 104 months with a 5-year survival rate of 75%. The progression-free survival was 40 months with a 1-year progression-free survival rate of 71%. Factors influencing survival include histopathological type of tumor, use of both HIPEC and EPIC, peritoneal cancer index, completeness of cytoreduction, and severe morbidity. The results demonstrate a learning curve where patients with a higher peritoneal cancer index (PCI) were treated, reduced amount of blood products required, more patients undergoing HIPEC and the combined HIPEC and EPIC, more redo-procedures performed, and a longer progression-free survival. CONCLUSIONS: This report demonstrates long-term survival outcomes, acceptable perioperative outcomes, and a learning curve associated with the treatment of patients with pseudomyxoma peritonei.
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Antineoplásicos/administración & dosificación , Seudomixoma Peritoneal/mortalidad , Seudomixoma Peritoneal/terapia , Adulto , Anciano , Anciano de 80 o más Años , Femenino , Estudios de Seguimiento , Humanos , Hipertermia Inducida , Infusiones Parenterales , Masculino , Persona de Mediana Edad , Atención Perioperativa , Pronóstico , Seudomixoma Peritoneal/cirugía , Análisis de Supervivencia , Adulto JovenRESUMEN
INTRODUCTION: This case report is the first in the Australian literature of a patient, without prior diagnosis, presenting with a bowel obstruction secondary to lobular breast cancer. This highlights a relatively rare cause of bowel obstruction, but also the importance of breast self-examination as a compliment to the current BreastScreen Australia program. PRESENTATION OF CASE: A 67-year-old female presented to the Emergency Department with a 48-h history of sharp, constant epigastric pain, vomiting and constipation. The patient proceeded to emergency laparotomy for presumed large bowel obstruction, which revealed a stricture in the distal terminal ileum causing a distal small bowel obstruction. A right hemicolectomy was performed. Histopathology revealed the terminal ileum stricture to be metastatic lobular breast carcinoma. Clinical examination of the patient's right breast revealed a lesion suggestive of the primary malignancy despite a normal ultrasound and mammogram in 2014. After failing to progress, a CT scan was performed which revealed progressive small and large bowel distension. A repeat laparotomy was performed revealing dilated large bowel without obstructing pathology and an intact anastomosis. A loop ileostomy was performed. Following a further febrile episode, the patient decided to withdraw care and the patient passed away three weeks into her admission from suspected intra-abdominal sepsis. DISCUSSION: Breast cancer is becoming the third most common cancer amongst Australian women with a significant burden of disease and mortality. CONCLUSION: Despite the rare presentation, this case reminds the medical community and general population of the importance of breast self-examination and the BreastScreen Australia program.
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PURPOSE: Proton therapy is increasingly used to treat pediatric brain tumors. However, the response of both tumors and healthy tissues to proton therapy is currently under investigation. One way of assessing this response is magnetic resonance (MR) diffusion tensor imaging (DTI), which can measure molecular mobility at the cellular level, quantified by the apparent diffusion coefficient (ADC). In addition, DTI may reveal axonal fiber directional information in white matter, quantified by fractional anisotropy (FA). Here we report use of DTI to assess tumor and unexposed healthy brain tissue responses in a child who received proton therapy for juvenile pilocytic astrocytoma. MATERIALS AND METHODS: A 10-year-old boy with recurrent juvenile pilocytic astrocytoma of the left thalamus received proton therapy to a dose of 50.4Gy (RBE) in 28 fractions. Functional magnetic resonance imaging was used to select beam angles for treatment planning. Over the course of the 7-year follow-up period, magnetic resonance imaging including DTI was done to assess response. The MR images were registered to the treatment-planning computed tomography scan, and the gross tumor volume (GTV) was mapped onto the MR images at each follow-up. The GTV contour was then mirrored to the right side of brain through the midline to represent unexposed healthy brain tissue. RESULTS: Proton therapy delivered the full prescribed dose to the target while completely sparing the contralateral brain. The MR ADC images obtained before and after proton therapy showed that enhancement corresponding to the GTV had nearly disappeared by 25 months. The ADC and FA measurements confirmed that contralateral healthy brain tissue was not affected, and the GTV reverted to clinically normal ADC and FA values. CONCLUSION: Use of DTI allowed quantitative evaluation of tumor and healthy brain tissue responses to proton therapy.