RESUMEN
The fibula free flap represents the gold standard for mandibular reconstruction. However, when harvested as a single barrel, this flap does not allow the native mandibular height to be restored, which is required for implant-supported dental rehabilitation of the patient. The aim of this study was to present a new design for a patient-specific three-dimensionally printed reconstructive plate (3DBO-PSI) that positions the fibula bone at the height of the resected mandibular alveolar bone while restoring the mandibular profile to ensure a correct morphological outcome. Twenty patients were enrolled prospectively between January 2019 and May 2022. All patients underwent a segmental mandibular resection and prosthetically guided reconstruction making use of a fibula free flap supported by the 3DBO-PSI. The mean follow-up period was 20 months. All microvascular and implant-related complications were recorded. Microvascular failure occurred in two patients. No PSI-related complications were recorded during the postoperative follow-up. The proposed reconstructive method was found to be reliable and reproducible. In all treated patients, the bony flap appeared to be adequately positioned to maintain the preoperative intermaxillary relationship, as planned. To date, dental rehabilitation has been completed in seven patients.
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Implantes Dentales , Colgajos Tisulares Libres , Reconstrucción Mandibular , Humanos , Reconstrucción Mandibular/métodos , Mandíbula/cirugíaRESUMEN
Transverse maxillomandibular hypoplasia can be treated with surgically assisted rapid maxillary expansion (SARME) in association with mandibular symphyseal distraction (MSD). This paper introduces a hybrid mandibular Bologna midline distractor (BMD); the effectiveness of the distractor in combination with SARME for the treatment of transverse skeletal deficiency was evaluated. This two-centre study included 10 patients with a transverse arch width deficit>7 mm and dental crowding, in both the maxilla and mandible, treated with SARME and MSD. The study design was partly retrospective (seven patients) and partly prospective (three patients). Frontal and lateral cephalometric analyses, as well as measurements on dental models, were performed at three different times: before treatment, after the distraction, and 6 months after postoperative orthodontic treatment. The cephalometric analyses and measurements on dental impressions confirmed a balanced and stable skeletal and dental mandibular expansion. An average symphyseal expansion of 7.8 mm was obtained, resolving dental crowding without dental extractions. In conclusion, mandibular expansion performed with the BMD in combination with SARME appears to be a viable surgical approach to transverse maxillomandibular hypoplasia. This technique allows the surgeon to obtain a balanced skeletal and dental expansion, with a low level of relapse.
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Mandíbula , Técnica de Expansión Palatina , Diente , Estudios Prospectivos , Estudios Retrospectivos , Mandíbula/cirugía , CefalometríaRESUMEN
The objectives of this study were: a) To report anti-Müllerian hormone (AMH) serum concentrations in neonatal, pre and postpubertal female cats. b) To establish the relationship between serum AMH with either age and estrous cycle c) To correlate the total number of different ovarian follicle types with AMH in adult queens. A single blood sample was collected from 10 neonates (including 5 male), 15 prepubertal and 48 postpubertal female cats to measure AMH. Eight, 10, and 18 of this latter group were in follicular (FP), luteal phase (LP), and anestrus (AN), respectively. The total number of each follicle type was histologically counted using the Gougeon and Chainy (1987) formula in a subgroup of 10 adult queens. Overall AMH mean of these the female cats was 6.31 ± 0.54 ng/mL. The neonatal females had lower AMH serum concentrations than their male littermates (2.56 ± 0.49 vs. >23 ng/mL; P < 0.01). Concentrations were also higher in prepubertal than in neonatal and postpubertal cats (11.79 ± 1.36 vs. 2.56 ± 0.49 vs. 4.87 ± 0.38 ng/mL; P < 0.01). Queens below 12 mo of age had the highest AMH levels (10.41 ± 1.16; P < 0.01). Age was inversely correlated with AMH (r = -0.5; P < 0.01). Animals in FP had lower AMH concentrations than AN females (2.51 ± 0.33 vs. 5.46 ± 0.76 ng/mL; P < 0.05). No difference in the total number of each follicle type were found between either ovary (P > 0.05). A high correlation was only found between small antral follicles and AMH concentrations (r = 0.85; P < 0.01). It was concluded, that AMH can provide an indirect, reliable marker for the assessment of ovarian follicle size and functionality. Age as well as pubertal state should be considered when evaluating AMH concentrations in this species.
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Hormona Antimülleriana , Folículo Ovárico , Femenino , Masculino , Animales , OvarioRESUMEN
PURPOSE: Sliding genioplasty is used to surgically correct a retruded or misaligned chin: in this procedure, an osteotomy is performed and the bony segment is repositioned. In this study we investigate the effect of surgical parameters (bony segment movement, osteotomy design) on postop soft tissue changes in a patient cohort. METHODS: Seven patients were retrospectively recruited. Cone beam computed tomography data were obtained and soft tissue and bone shape reconstructions were performed. 3D models were created and surgical cuts were replicated according to postop scans. Each model was imported in ANSYS 2019R1 (Ansys Inc, USA) for simulation: the effect of variation in osteotomy plane as well as extent of bony segment movement were assessed by means of design of experiment: surgical parameters were varied in a surgically acceptable range and the soft tissue predictions were evaluated as displacement output of five craniometric landmarks. RESULTS: Simulation results show the overall changes of the lower third of the face are sensitive to changes in horizontal and vertical displacement of the bony segment as well as segment rotation. No significant changes in the soft tissue response were to attribute to the osteotomy design. CONCLUSIONS: Our results are consistent with experimental findings reported in the literature: when planning genioplasty in orthognathic surgery, particular focus on the segment movement (horizontal translation, vertical translation and rotation), rather than on the design of the osteotomy itself, should be considered.
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Mentoplastia , Procedimientos Quirúrgicos Ortognáticos , Cefalometría , Humanos , Mandíbula , Estudios RetrospectivosRESUMEN
OBJECTIVE: Neoadjuvant chemotherapy and interval debulking surgery are now widely offered in ovarian cancer patients unsuitable for surgery; the number of preoperative NACT cycles to be given is still an issue. Our aim was to compare survival outcomes of patients with advanced ovarian cancer treated with ≤4 or more NACT cycles. METHODS: A cohort of AEOC patients with stage III-IV epithelial OC who underwent NACT followed by IDS was identified. Patients were classified in group A (≤4 cycles) and group B (>4 cycles). Selection bias from the heterogeneity of demographic and clinical characteristics was avoided using propensity score matching (2:1 ratio). RESULTS: 140 (group A) and 70 (group B) patients were included. After the propensity score matching, there were no imbalances in baseline characteristics. BRCA status was associated to improved OS (HR = 0.41; 95%CI 0.18.0.92, p = 0.032) and residual tumor to decreased OS (HR = 1.93; 95%CI 1.08-3.46, p = 0.026). Statistically significant differences were not observed in OS (2-year OS 82.4% for group A versus 77.1% for group B, p = 0.109) and PFS (2-year PFS 29.7% for group A versus 20.0% for group A, p = 0.875). In group B, the administration of >4 cycles was related to an additional chance of achieving complete (12.9%) and partial (34.3%) responses compared to responses after 3-4 cycles. CONCLUSIONS: Receiving more than 4 cycles of NACT is no detrimental in terms of OS and PFS in advanced ovarian cancer. Response rates can increase following further cycles administration.
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Carcinoma Epitelial de Ovario/tratamiento farmacológico , Neoplasias Ováricas/tratamiento farmacológico , Puntaje de Propensión , Adulto , Anciano , Carcinoma Epitelial de Ovario/mortalidad , Quimioterapia Adyuvante , Femenino , Humanos , Persona de Mediana Edad , Terapia Neoadyuvante , Neoplasias Ováricas/mortalidadRESUMEN
New 3D digital technologies can be applied to implant-supported ear prostheses to restore anatomical structures damaged by cancer, dysplasia, or trauma. However, several factors influence the accuracy of implant positioning using a cranial template. This pilot study describes an innovative navigated flapless surgery for craniofacial implants, prosthetically guided by 3D planning of the ear prosthesis. Laser surface scanning of the face allowed for mapping of the healthy ear onto the defect site, and projection of the volume and position of the final prosthesis. The projected ear volume was superimposed on the skull bone image obtained by cone-beam computed tomography (CBCT), performed with the navigation system marker plate positioned in the patient's mouth. The craniofacial implants were fitted optimally to the ear prosthesis. After system calibration, real-time navigated implant placement based on the virtual planning was performed with minimally invasive flapless surgery under local anesthesia. After 3 months of healing, digital impressions of the implants were made, and the digital manufacturing workflow was completed to manufacture the ear prosthesis anchored to the craniofacial implants. The proposed digital method facilitated implant positioning during flapless surgery, improving the ear prosthesis manufacturing process and reducing operation time, patient morbidity, and related costs. This protocol avoids the need for a reference tool fixed in the cranial bone, as is usually required for maxillofacial surgery, and confirmed that surgical navigation is useful for guiding the insertion of craniofacial implants during flapless surgery.
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Implantes Dentales , Cirugía Asistida por Computador , Tomografía Computarizada de Haz Cónico , Prótesis Dental de Soporte Implantado , Humanos , Proyectos PilotoRESUMEN
A majority of BRCA1/2 (BRCA) pathogenic variants (PVs) are single nucleotide substitutions or small insertions/deletions. Copy number variations (CNVs), also known as large genomic rearrangements (LGRs), have been identified in BRCA genes. LGRs detection is a mandatory analysis in hereditary breast and ovarian cancer families, if no predisposing PVs are found by sequencing. Next generation sequencing (NGS) may be used to detect structural variation, since quantitative analysis of sequencing reads, when coupled with appropriate bioinformatics tools, is capable of estimating and predicting germline LGRs (gLGRs). However, applying this approach to tumor tissue is challenging, and the pipelines for determination of CNV are yet to be optimized. The aim of this study was to validate the Next Generation Tumor Sequencing (NGTS) technology to detect various gLGRs of BRCA1 locus in surgical tumor tissue samples. In this study, seven different BRCA1 gLGRs, previously found in high-grade serous ovarian cancers (HGSOC) patients, were detected in tumor samples collected from the patients at a time of HGSOC surgery. This study demonstrated that NGS can accurately detect BRCA1 gLGRs in primary tumors, suggesting that gLGR evaluation in BRCA1 locus should be performed in cases when the screening for BRCA alterations starts from tumor instead of blood. NGS sequencing of tumor samples may become the preferred method to detect both somatic and germline gLGRs in BRCA-encoding loci.
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Proteína BRCA1/genética , Neoplasias de la Mama/genética , Genes BRCA1 , Secuenciación de Nucleótidos de Alto Rendimiento , Neoplasias Ováricas/genética , Variaciones en el Número de Copia de ADN/genética , Femenino , Células Germinativas/metabolismo , Mutación de Línea Germinal , HumanosRESUMEN
OBJECTIVE: The aim of this study was to investigate the correlation between BRCA mutational status and response to bevacizumab in a large advanced ovarian cancer (AOC) series. METHODS: This is a multicenter, retrospective case-control study including upfront AOC treated between January 2015 and June 2019. The main inclusion criteria were: having received three weekly carboplatin-paclitaxel as first-line treatment, with or without Bevacizumab maintenance, knowledge of the BRCA mutational status. RESULTS: Overall, 441 patients were included; 183 (41.5%) patients received bevacizumab (Cases), and 258 (58.5%) did not receive it (Controls). The BRCA mutated patients (BRCAmut) were 58 (39%) in the Cases group and 90 (34.9%) in the Controls group (p = .77). Patients who received bevacizumab had a significant 4-months increase in median progression free survival (mPFS: 21 vs. 17 months, p = .033). Concerning BRCAmut patients, no differences were shown between those who received bevacizumab or not in terms of mPFS (24 vs. 22 months, p = .3). Conversely, in BRCA wild-type (BRCAwt) population bevacizumab administration significantly prolonged mPFS (20 vs 15 months, p = .019). At multivariate analysis, independent factors of prolonged PFS were BRCA status (OR = 0.60), having received PDS (OR = 0.69), and complete cytoreduction (OR = 0.50), but not the bevacizumab administration (OR = 0.83, p = .22). CONCLUSIONS: No evidence of oncological benefit in terms of PFS and OS related to bevacizumab maintenance therapy was found in BRCAmut patients. Differently, BRCAwt patients seem to benefit from antiangiogenic treatment in terms of mPFS.
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Inhibidores de la Angiogénesis/administración & dosificación , Protocolos de Quimioterapia Combinada Antineoplásica/administración & dosificación , Bevacizumab/administración & dosificación , Procedimientos Quirúrgicos de Citorreducción , Neoplasias Ováricas/terapia , Adulto , Anciano , Anciano de 80 o más Años , Inhibidores de la Angiogénesis/efectos adversos , Protocolos de Quimioterapia Combinada Antineoplásica/efectos adversos , Proteína BRCA1/genética , Proteína BRCA2/genética , Bevacizumab/efectos adversos , Carboplatino/administración & dosificación , Carboplatino/efectos adversos , Estudios de Casos y Controles , Quimioterapia Adyuvante/efectos adversos , Quimioterapia Adyuvante/métodos , Progresión de la Enfermedad , Femenino , Humanos , Quimioterapia de Mantención/efectos adversos , Quimioterapia de Mantención/métodos , Persona de Mediana Edad , Mutación , Neoplasias Ováricas/diagnóstico , Neoplasias Ováricas/genética , Neoplasias Ováricas/mortalidad , Ovario/efectos de los fármacos , Ovario/patología , Ovario/cirugía , Paclitaxel/administración & dosificación , Paclitaxel/efectos adversos , Supervivencia sin Progresión , Estudios RetrospectivosRESUMEN
Lagophthalmos is one of the most unpleasant and dangerous conditions that affect patients with facial palsy. The lack of ocular protection leads to corneal problems (such as conjunctival infections, acute and chronic keratitis, corneal ulcerations, and blindness). A dynamic reanimation of blinking eyelids is the therapeutic gold standard. However, success is not guaranteed with these dynamic techniques; even if results are good, blinking is usually restored within a year of the initial operation. Procedures that act more rapidly and have a higher success rate are needed. We proposed that lipofilling of the upper eyelid would improve eye closure, exploit the advantages of using autologous fat, and avoid the risks of exposure or migration associated with loading the lid with gold. Between 2012 and September 2018, we did upper eyelid lipofilling procedures for 75 patients with unilateral facial palsy. The main favourable result of lipofilling of the upper lid was the immediate improvement in corneal discomfort. Everybody described a partial to total increase in corneal comfort postoperatively. In the treatment of paralytic lagophthalmos, lipofilling of the upper eyelid produces favourable aesthetic and functional results, ocular health is restored, and the patients' quality of life is improved.
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Implantes Dentales , Enfermedades de los Párpados , Parálisis Facial , Estética Dental , Enfermedades de los Párpados/cirugía , Párpados/cirugía , Parálisis Facial/cirugía , Humanos , Prótesis e Implantes , Calidad de VidaRESUMEN
PURPOSE: Neoadjuvant chemotherapy followed by surgery (NACT + S) has been compared with definitive chemoradiothherapy (CRT) in randomized clinical trials (RCTs) in stage IB2, IIA and IIB cervical cancer (1994 Figo stage). Our aim was to evaluate efficacy and toxicity of NACT + S and CRT and identify differences in clinical outcomes and severe toxicity frequency. METHODS: The PRISMA statement was applied. Random-effects models were used. RESULTS: Two RCTs representing 1259 patients were identified. NACT + S was not associated with significant OS improvement compared with CRT, with HR of 1.08 (95% CI = 0.86-1.36; p = 0.51). The HR of relapse was 1.32 (95%CI = 1.07-1.62) in favor of CRT. Severe acute toxicity was lower in CRT group. CONCLUSION: This meta-analysis showed similar OS rates between treatment and CRT superiority over NACT + S in terms of DFS and severe acute toxicity. Impact on long term toxicity and quality of life remain to be proven.
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Quimioradioterapia/mortalidad , Quimioterapia Adyuvante/mortalidad , Histerectomía/mortalidad , Terapia Neoadyuvante/mortalidad , Neoplasias del Cuello Uterino/mortalidad , Terapia Combinada , Femenino , Humanos , Pronóstico , Tasa de Supervivencia , Neoplasias del Cuello Uterino/patología , Neoplasias del Cuello Uterino/terapiaRESUMEN
OBJECTIVE: The role of secondary cytoreductive surgery (SCS) in platinum-sensitive recurrent ovarian cancer (PSROC) is still controversial. We investigated the role of SCS in PSROC patients with BRCA1/2 mutation (BRCAmut) who received platinum-based chemotherapy followed by olaparib maintenance. METHODS: This is a case-control study. Patients with first PSROC admitted to our Gynecologic Oncology Unit between 2014 and 2018 were identified. Main eligibility criteria: positive BRCA1/2 germline or somatic mutation status and olaparib maintenance at primary recurrence after response to platinum-based chemotherapy. Cases were those who received SCS followed by medical treatment (SCS-CT-OLA, group 1), controls were those who received medical treatment alone (CT-OLA, group 2). RESULTS: Overall, 46 patients were identified; 23 (50%) BRCAmut women undergoing SCS followed by platinum-based chemotherapy and olaparib maintenance were matched with 23 (50%) BRCAmut women who only received medical treatment. Groups were well balanced: no statistical differences were found with regard of age, mutational status, treatment's approach at diagnosis, timing and patterns of disease presentation at recurrence. Median time to first subsequent therapy (TFST) was significantly longer in the SCS-CT-OLA than in the CT-OLA group (42 months vs 16 months; p = 0.05). Also, SCS-CT-OLA patients had the best post-recurrence survival (PRS), with a 3-year PRS of 79% in SCS-CT-OLA group versus 42% in CT-OLA group (p = 0.02). CONCLUSIONS: SCS increases TFST and PRS in PSROC patients with BRCAmut candidate for olaparib maintenance after platinum-based chemotherapy. Prospective studies are needed. In the era of personalized medicine, indication to SCS should be individualized.
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Neoplasias Ováricas/tratamiento farmacológico , Neoplasias Ováricas/cirugía , Ftalazinas/administración & dosificación , Piperazinas/administración & dosificación , Adulto , Anciano , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Carboplatino/administración & dosificación , Carboplatino/uso terapéutico , Estudios de Casos y Controles , Cistadenocarcinoma Seroso/tratamiento farmacológico , Cistadenocarcinoma Seroso/genética , Cistadenocarcinoma Seroso/cirugía , Procedimientos Quirúrgicos de Citorreducción , Desoxicitidina/administración & dosificación , Desoxicitidina/análogos & derivados , Doxorrubicina/administración & dosificación , Femenino , Genes BRCA1 , Genes BRCA2 , Mutación de Línea Germinal , Humanos , Quimioterapia de Mantención , Persona de Mediana Edad , Recurrencia Local de Neoplasia , Estadificación de Neoplasias , Neoplasias Ováricas/genética , Paclitaxel/administración & dosificación , GemcitabinaRESUMEN
To test the hypothesis that postnatal sexual steroids induce an impairment of domestic male cat reproductive function, this study describes the physical, endocrine, steroidogenical and histological effects of a single, high dose of a postnatal sexual steroid in this species. Twenty male kittens were randomly assigned within the first 24â¯h of birth to: Testosterone enanthate 12.5â¯mg sc (TE; nâ¯=â¯8), medroxyprogesterone acetate 10â¯mg sc (MA; nâ¯=â¯6), or Placebo sc (PL; nâ¯=â¯6). The cats were followed until puberty when they were castrated. Kittens achieved puberty without age differences among groups (Pâ¯>â¯0.05). Two MA cats presented abnormal testicular descent. Histological evaluation of the MA (Pâ¯<â¯0.01), but not of TE testes revealed decreased diameter (Pâ¯<â¯0.01) and epithelial height (Pâ¯<â¯0.01) of the seminiferous tubules. Leydig cell nuclear area was also reduced in this group. Conversely, tubular/intertubular ratio was increased in TE animals (Pâ¯<â¯0.01). Quantitative real-time PCR analysis of mRNA expression of testicular tissue revealed no significant differences among groups for StAR, CYP17A1 and androgen receptors. TE animals showed decreased CYP19A1 mRNA expression (Pâ¯<â¯0.05). In the first 4 postnatal weeks, fecal testosterone (T) values were high, basal and intermediate in TE, MA and PL (Pâ¯<â¯0.05), respectively. These differences progressively diminished and the three groups presented basal T concentrations from the 7th week on (Pâ¯>â¯0.05). It was concluded that the postnatal progestagen initially suppressed the gonadal axis and caused an impairment of spermatogenesis and testicular descent at puberty. Androgen treatment caused downregulation of the final steroidogenic cascade.
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Disruptores Endocrinos/farmacología , Reproducción/efectos de los fármacos , Esteroides/farmacología , Testículo/efectos de los fármacos , Testículo/crecimiento & desarrollo , Testosterona/análogos & derivados , Animales , Animales Recién Nacidos , Constitución Corporal/efectos de los fármacos , Gatos , Anticoncepción/métodos , Anticoncepción/veterinaria , Hormonas Esteroides Gonadales/farmacología , Masculino , Reproducción/fisiología , Maduración Sexual/efectos de los fármacos , Espermatogénesis/efectos de los fármacos , Testosterona/farmacologíaAsunto(s)
Diseño Asistido por Computadora , Mandíbula/cirugía , Nervio Mandibular/cirugía , Cirugía Asistida por Computador , Adulto , Niño , Femenino , Humanos , Imagenología Tridimensional , Italia , Masculino , Mandíbula/diagnóstico por imagen , Mandíbula/inervación , Nervio Mandibular/diagnóstico por imagen , Reconstrucción Mandibular/métodos , Persona de Mediana Edad , Planificación de Atención al Paciente , Proyectos Piloto , Estudios Prospectivos , Programas Informáticos , Tomografía Computarizada por Rayos X , Resultado del Tratamiento , Adulto JovenRESUMEN
BACKGROUND: Spermatogenesis is a process of dynamic cell differentiation. Ionizing radiation impairs spermatogenesis, and spermatogonia are more radiosensitive than spermatocytes or spermatids. Consistent with this assumption and due to improvement in tumor curability, nowadays, fertility preservation represents a public health need. OBJECTIVES: To discuss radiotherapy-induced risk to male fertility and raise oncologic awareness of male fertility in daily clinical practice. MATERIALS AND METHODS: PubMed and Clinicaltrials.gov databases were searched for papers in English. RESULTS: We provide an overview of clinical landscape. Four main issues were proposed: (i) spermatogenesis and radiobiological general concepts; (ii) impairment of spermatogenesis; (iii) impairment of testosterone-producing Leydig cells; (iv) clinical radiotherapy evidence in oncology. CONCLUSION: This review can be useful in daily clinical work and offer some directions for future research.
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Infertilidad Masculina/etiología , Células Intersticiales del Testículo/efectos de la radiación , Traumatismos por Radiación/patología , Espermatogénesis/efectos de la radiación , Espermatogonias/efectos de la radiación , Accidente Nuclear de Chernóbil , Preservación de la Fertilidad/métodos , Humanos , Masculino , Neoplasias/radioterapia , Calidad de Vida/psicologíaRESUMEN
BACKGROUND: Hormone replacement therapy (HRT) has been tested in women with BRCA1 and BRCA2 mutations who underwent risk-reducing salpingo-oophorectomy (RRSO), but its effect on breast cancer (BC) risk has never been appraised using meta-analysis comparison. We performed the first meta-analysis aimed to clarify whether HRT after RRSO could negatively impact on BC risk in women carriers of BRCA1 and BRCA2 mutations. METHODS AND MATERIAL: Pubmed and Scopus databases were searched to retrieve articles written in the English language. Trials comparing RRSO with or without HRT were identified and only those trials with available BC events were included. BC risk was the main endpoint. RESULTS: Three trials with 1100 patients were included. There was not a significantly higher BC risk in BRCA1 and BRCA2 mutation carriers receiving HRT after RRSO (HR = 0.98; 95% CI 0.63-1.52). There was a slightly but not significantly, benefit in BC risk reduction in favor of estrogen alone HRT versus estrogen plus progesterone HRT formulation (OR = 0.53; 95% CI 0.25-1.15). CONCLUSION: HRT use after RRSO in BRCA 1 and BRCA2 mutation carries does not affect BC risk. Comparison of the different HRT types suggests that estrogen alone should be related to lowest BC risk.
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Neoplasias de la Mama/tratamiento farmacológico , Genes BRCA1 , Genes BRCA2 , Terapia de Reemplazo de Hormonas , Mutación , Conducta de Reducción del Riesgo , Salpingooforectomía , Neoplasias de la Mama/genética , Neoplasias de la Mama/cirugía , Femenino , Humanos , Medición de RiesgoRESUMEN
Despite different treatment strategies, locally advanced cervical cancer (CC) persists as one of the most incurable cancers among women worldwide. In fact, this setting of patients are at high risk of persistent and recurrent disease. In recent years, researches have investigated immune check-point inhibitors in hopes of determining improved response to therapy with prolongation of survival. We reviewed the published literature and conference proceedings and presented pivotal trials supporting immune check-point inhibitors use in the treatment of CC.
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Anticuerpos Monoclonales/uso terapéutico , Antígeno B7-H1/antagonistas & inhibidores , Biomarcadores/análisis , Antígeno CTLA-4/antagonistas & inhibidores , Inmunoterapia/métodos , Selección de Paciente , Neoplasias del Cuello Uterino/tratamiento farmacológico , Femenino , Humanos , Neoplasias del Cuello Uterino/inmunologíaRESUMEN
The objective of this study was to assess the efficiency and clinical safety of postnatal administration of a GnRH agonist on canine puberty postponement. Sexual steroids and histological gonadal changes were also described. Twenty-four littermate puppies were randomly assigned to: Deslorelin acetate 18.8â¯mg sc (DESLO; nâ¯=â¯12) or Placebo: sc (PLACE; nâ¯=â¯12) postnatally. The dogs were clinically and endocrinologically followed up until puberty when they were gonadectomized and their gonads histomorphometrically studied. Deslorelin postponed the age of puberty (72.7⯱â¯4.8 vs. 35.8⯱â¯1.9 weeks; Pâ¯<â¯0.01) in these dogs. At the time of this submission, 3 DESLO dogs (108 weeks old) remain non-pubertal. All dogs concluded growing at a similar age (29.75⯱â¯2.44 vs. 29.25⯱â¯0.90 weeks; Pâ¯>â¯0.1) independently of their group and pubertal status. None of the females had side effects while the 2 non pubertal DESLO males presented bilateral cryptorchydism. All the bitches ovulated at puberty (Pâ¯>â¯0.1) and the 2 DESLO that were mated became pregnant. Deslorelin postponed basal serum sexual steroids up to puberty in both genders (Pâ¯<â¯0.01). The histomorphometrical study of the testes revealed that the tubular diameter (Pâ¯<â¯0.05), germinal epithelium height and composition (Pâ¯<â¯0.01) were decreased in DESLO group. Ovarian structures did not differ between treatments (Pâ¯>â¯0.05). It was concluded that postnatal deslorelin decreased sexual steroids reversibly postponing puberty in both genders without side effects in bitches and causing 2/6 of cryptorchydism and impairment of testicular histomorphometry in male dogs.
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Animales Recién Nacidos/fisiología , Perros/fisiología , Hormona Liberadora de Gonadotropina/agonistas , Maduración Sexual/efectos de los fármacos , Pamoato de Triptorelina/análogos & derivados , Envejecimiento , Animales , Anticoncepción/veterinaria , Criptorquidismo/inducido químicamente , Criptorquidismo/veterinaria , Enfermedades de los Perros/inducido químicamente , Femenino , Masculino , Ovario/anatomía & histología , Ovario/efectos de los fármacos , Ovulación/efectos de los fármacos , Embarazo , Testículo/anatomía & histología , Testículo/efectos de los fármacos , Testosterona/sangre , Pamoato de Triptorelina/administración & dosificación , Pamoato de Triptorelina/efectos adversosRESUMEN
BACKGROUND: Unilateral condylar hyperplasia (UCH) of the mandible, or Hypercondylia, is a pathological condition that determines an abnormal growth of the affected condyle.Bone SPECT with Tc99m-diphosphonates is a successful tool in the diagnosis of UCH. EANM guidelines also suggest the use of 18F-NaF PET/CT, though it leads to a higher radiation exposure. AIM: As UCH patients are young, we aimed to develop a low dose 18F-Fluoride PET/CT protocol and compare it to a standard injected activity scan, to assess if the image quality remains unchanged. MATERIALS AND METHODS: We prospectively enrolled 20 patients (7 males, 13 females, mean age 23.2) with UCH, who underwent 18F-NaF PET/CT to assess the hypercondylia. We administered a low activity of 18F-NaF (2.9 MBq/kg) in 15 patients and a standard activity (5.3 MBq/kg) in 5 patients. Activity range was chosen according to 2015 EANM guidelines.To determine if the scans with low radiotracer activity were "diagnostic" such as those with standard activity, two expert nuclear medicine physicians, unaware of the administered activity, independently reviewed the scans and expressed a final qualitative judgment in terms of "diagnostic"/"non-diagnostic" scan. Furthermore, we compared the effective dose of a low injected activity PET/CT to the standard one and to a Bone SPECT performed with standard injected activity of Tc99m-diphosphonates. RESULTS: Reviewers classified 19 of 20 scans as "diagnostic". Only one of them was classified as "non diagnostic" due to condylar arthrosis that disturbed the correct evaluation of condylar radiotracer uptake. The effective dose of a 18F-Fluoride PET/CT, in patient of 70 kg, is about 3.5 mSv in scans performed with 2.9 MBq/kg [0.017 mSv/MBq × 2.9 MBq/kg × 70 kg] and about 6.3 mSv in ones performed with 5.3 MBq/kg [0.017 mSv/MBq × 5.3 MBq/kg × 70 kg]. The effective dose of 99mTc-MDP bone SPECT is about 3.2 mSv [0.0043 mSv/MBq × 740 MBq of 99mTc-MDP]. DISCUSSION: 18F-NaF PET/CT performed with a low radiotracer activity allows a good assessment of UCH similar to that performed with an ordinary activity. The effective radiation dose of a low-injected activity PET/CT is significantly lower than an ordinary-injected activity and is not significantly higher than the most used Bone SPECT. Moreover PET/CT is performed in 1.5 h while Bone SPECT requires at least 3.5 h. CONCLUSIONS: The 18F-Fluoride PET/CT procedure could be performed with 2.9 MBq/Kg (minimum 185 MBq, recommended at least 200 MBq) of 18F-NaF to minimize the effective radiation dose received, maintaining the quality of the scan. Further studies including a larger number of patients and clinical follow-up are needed to confirm our preliminary findings.
RESUMEN
OBJECTIVE: The use of dose-dense weekly chemotherapy in the management of advanced ovarian cancer (OC) remains controversial. The aim of this meta-analysis was to evaluate the efficacy of dose-dense regimen to improve clinical outcomes in OC patients with the inclusion of new trials. METHODS: For this updated meta-analysis, PubMed Medline and Scopus databases and meeting proceedings were searched for eligible studies with the limitation of randomized controlled trials, comparing dose-dense chemotherapy versus standard treatment. Trials were grouped in two types of dose-dense chemotherapy: weekly dose-dense (both paclitaxel and carboplatin weekly administration) and semi-weekly dose-dense (weekly paclitaxel and three weekly carboplatin administration). Data were extracted independently and were analyzed using RevMan statistical software version 5.3 (http://www.cochrane.org). Primary end-point was progression-free survival (PFS). RESULTS: Four randomized controlled trials comprising 3698 patients were identified as eligible. Dose-dense chemotherapy had not a significant benefit on PFS (HR 0.92, 95% CI 0.81-1.04, pâ¯=â¯0.20). When the analysis was restricted to both weekly and semi-weekly dose-dense data, a no significant interaction between dose-dense and standard regimen was confirmed (HR 1.01, 95% CI 0.93-1.10 and HR 0.82, 95% CI 0.63-1.08, respectively). CONCLUSIONS: In the absence of PFS superiority of dose-dense schedule, three weekly schedule should remain the standard of care for advanced OC.
Asunto(s)
Protocolos de Quimioterapia Combinada Antineoplásica/administración & dosificación , Neoplasias Ováricas/tratamiento farmacológico , Ensayos Clínicos Controlados Aleatorios como Asunto/estadística & datos numéricos , Protocolos de Quimioterapia Combinada Antineoplásica/efectos adversos , Carboplatino/administración & dosificación , Carboplatino/efectos adversos , Progresión de la Enfermedad , Supervivencia sin Enfermedad , Relación Dosis-Respuesta a Droga , Esquema de Medicación , Femenino , Humanos , Neoplasias Ováricas/epidemiología , Neoplasias Ováricas/patología , Paclitaxel/administración & dosificación , Paclitaxel/efectos adversosRESUMEN
OBJECTIVE: Surgery represents the mainstay of treatment of stage I adult type granulosa cell tumors of the ovary (AGCTs). Because of the rarity and indolent course of the disease, no prospective trials are available. Open surgery has long been considered the traditional approach; oncological safety of laparoscopy is only supported by small series or case reports. The aim of this study was to compare the oncological outcomes between laparoscopic and open surgery in stage I AGCTs treated within the MITO (Multicenter Italian Trials in Ovarian cancer) Group. METHODS: Data from patients with stage I AGCTs were retrospectively collected. Clinicopathological features were evaluated for association with relapse and death. Survival curves were calculated using the Kaplan-Meier method and compared with the log-rank test. The role of clinicopathological variables as prognostic factors for survival was evaluated using Cox's regression model. RESULTS: 223 patients were identified. Stage 1A, 1B and 1C were 61.5%, 1.3% and 29.6% respectively. 7.6% were apparently stage I. Surgical approach was laparoscopic for 93 patients (41.7%) and open for 130 (58.3%). 5-years DFS was 84% and 82%, 10-years DFS was 68% and 64% for the laparoscopic and open-group (p = 0.6).5-years OS was 100% and 99%, 10 years OS was 98% and 97% for the laparoscopic and open-surgery group (p = 0.8). At multivariate analyses stage IC, incomplete staging, site of primary surgery retained significant prognostic value. CONCLUSION: The present study suggests that surgical route does not affect the oncological safety of patients with stage I AGCTs, with comparable outcomes between laparoscopic and open approach.