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INTRODUCTION: Definitions of pediatric overtriage and unnecessary transfers for injured children have been instituted from a viewpoint of referral centers and have doubtful value for effecting interventions at referring centers. This study provides a unique insight into the factors prompting transfers at a peripheral institution. METHODS: The trauma registry of a level 2 pediatric trauma center was accessed, and pediatric transfers out to 2 level 1 pediatric trauma centers were identified over a period of 4 years. The outcomes of these patients at the accepting institutions were charted for descriptive analysis. RESULTS: The study identified 46 patients transferred out with a transfer rate of 6.6% when compared with total admissions. The mean Injury Severity Score (ISS) was 6.5, and the mean length of stay (LOS) at the receiving institution was 2.8 days. The reason for transfer from a specialty standpoint revealed 21 neurosurgical, 12 burn, 6 orthopedic, 4 faciomaxillary, and 2 ophthalmology patients. Overall transfer rate was 6.6%. Pediatric overtriage when defined as LOS < 24 hours at the receiving institution was 46.7%. Fifty percent of pediatric overtriage was prompted by need for a pediatric neurosurgery consult with medicolegal concern being cited as reason for transfer. Secondary overtriage when defined as LOS < 24 hours, no pediatric intensive care admission, no surgical intervention, and ISS < 9 was found in 13 patients (30.9%). The proportion of patients with Medicaid insurance was not different for the admissions (43.5%) when compared with the transfers (42.7%). CONCLUSIONS: Existing definitions of overtriage have limited value in effecting interventions to reduce unnecessary transfers. Identifying specific factors at referring institutions including providing local availability of pediatric surgical specialists will potentially help mitigate injury-related pediatric overtriage.
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BACKGROUND AND PURPOSE: Successful vessel recanalization in posterior circulation large-vessel occlusion is considered crucial, though the evidence of clinical usefulness, compared with the anterior circulation, is not still determined. The aim of this study was to evaluate predictors of favorable clinical outcome and to analyze the effect of first-pass thrombectomy. MATERIALS AND METHODS: A retrospective, multicenter, observational study was conducted in 10 high-volume stroke centers in Europe, including the period from January 2016 to July 2019. Only patients with an acute basilar artery occlusion or a single, dominant vertebral artery occlusion ("functional" basilar artery occlusion) who had a 3-month mRS were included. Clinical, procedural, and radiologic data were evaluated, and the association between these parameters and both the functional outcome and the first-pass effect was assessed. RESULTS: A total of 191 patients were included. A lower baseline NIHSS score (adjusted OR, 0.77; 95% CI, 0.61-0.96; P = .025) and higher baseline MR imaging posterior circulation ASPECTS (adjusted OR, 3.01; 95% CI, 1.03-8.76; P = .043) were predictors of better outcomes. The use of large-bore catheters (adjusted OR, 2.25; 95% CI, 1.08-4.67; P = .030) was a positive predictor of successful reperfusion at first-pass, while the use of a combined technique was a negative predictor (adjusted OR, 0.26; 95% CI, 0.09-0.76; P = .014). CONCLUSIONS: The analysis of our retrospective series demonstrates that a lower baseline NIHSS score and a higher MR imaging posterior circulation ASPECTS were predictors of good clinical outcome. The use of large-bore catheters was a positive predictor of first-pass modified TICI 2b/3; the use of a combined technique was a negative predictor.
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Arteriopatías Oclusivas/cirugía , Accidente Cerebrovascular/cirugía , Trombectomía/métodos , Anciano , Anciano de 80 o más Años , Arteriopatías Oclusivas/complicaciones , Arteria Basilar/patología , Catéteres , Procedimientos Endovasculares/instrumentación , Procedimientos Endovasculares/métodos , Europa (Continente) , Femenino , Humanos , Masculino , Persona de Mediana Edad , Reperfusión/métodos , Estudios Retrospectivos , Accidente Cerebrovascular/etiología , Trombectomía/instrumentación , Resultado del Tratamiento , Insuficiencia Vertebrobasilar/complicaciones , Insuficiencia Vertebrobasilar/cirugíaRESUMEN
Despite more cancers in young men over the past two decades, improvements in therapies give a greater chance to live full lives following treatment. Sperm genomic quality is variable following cancer diagnosis, so its assessment is important if sperm cryopreservation is being considered. Here, we evaluated DNA damage using two DNA damage assays: an alkaline and for the first time, a neutral Comet assays in men presenting with testicular cancer (n = 19 for alkaline and 13 for neutral group) and lymphoma (n = 13 for alkaline and 09 for neutral group) compared with fertile donors (n = 20 for alkaline and 14 for neutral group). No significant differences were observed in any semen analysis parameters. In contrast, sperm DNA damage was higher in men with testicular cancer than in donors as assessed by both the alkaline (12.4% vs. 37.4%, p < 0.001) and neutral (7.5% vs. 13.4%; p < 0.05) Comet assays. Similar trends were observed in men with lymphoma. Here, sperm DNA damage was higher using both the alkaline (35.0% vs. 12.4%) and neutral (10.7% against 7.5% (p < 0.05) Comet assays. Moreover, the DNA strand breaks (particularly double-strand breaks) were significantly more prominent in men with cancer having abnormal seminal parameters than normozoospermic ones. This study showed that sperm DNA testing using alkaline and neutral Comet assays is more sensitive than semen analysis in detecting impaired sperm quality in men presenting with cancer. It may provide a useful adjunct when considering storage prior to cancer investigations and assisted reproductive techniques (ART)-based treatment.
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Ensayo Cometa/métodos , Fragmentación del ADN , Linfoma/complicaciones , Análisis de Semen/métodos , Neoplasias Testiculares/complicaciones , Humanos , Masculino , Espermatozoides/patologíaRESUMEN
The standard FSH treatment is based on a 3 months period, after which both quantitative/qualitative improvement of sperm parameters and increased pregnancy rate were reported. In this prospective clinical trial, for the first time, we studied (i) Sperm hyaluronic acid binding capacity after highly purified FSH (hpFSH) treatment; (ii) the effect after short-term and standard treatment on this functional parameter. As secondary objective, we analyzed three SNPs on FSHß and FSHR genes to define their potential predictive value for responsiveness. From a total of 210 consecutive patients, 40 oligo- and/or astheno- and/or teratozoospermic patients fulfilled the inclusion criteria. Treatment consisted in hpFSH 75 IU/L every other day for 3 months. To avoid potential biases derived from the lack of placebo, we analyzed each patient after 4-6 months of 'wash-out' period. After FSH treatment, we observed a statistically significant (p < 0.001) improvement of the percentage of hyaluronic acid bound spermatozoa from basal to T1 (after 1 month) and to T3 (after 3 months). Importantly, these values returned to near-baseline value after the wash-out. The same results were detected for total motile sperm count after 3 months with return to baseline after wash-out. Forty-two percent of patients responded to the therapy with increasing hyaluronic acid binding capacity above the double of the Intraindividual Variation (IV) while 24% of patients reached above the normal Sperm-Hyaluronan Binding Assay (HBA) value. Further increase in 'responders' was observed at T3. The responsiveness to treatment resulted independent from FSHR/FSHß polymorphisms. The significant positive effect on sperm maturity after 1 month opens novel therapeutic perspectives. In view of both the high cost and the relative invasiveness of treatment, the short protocol (1 month) could represent a viable FSH treatment option prior Assisted Reproductive Techniques since FSH, by acting on sperm maturation, increases the proportion of functionally competent cells.
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Hormona Folículo Estimulante/uso terapéutico , Infertilidad Masculina/tratamiento farmacológico , Maduración del Esperma/efectos de los fármacos , Espermatozoides/efectos de los fármacos , Proteínas Portadoras/genética , Genotipo , Glicopéptidos/genética , Humanos , Infertilidad Masculina/genética , Masculino , Polimorfismo de Nucleótido Simple , Estudios Prospectivos , Receptores de HFE/genéticaRESUMEN
BACKGROUND AND PURPOSE: Aspiration thrombectomy of large vessel occlusions has made a comeback among recanalization techniques thanks to recent advances in catheter technology resulting in faster recanalization and promising clinical results when used either alone or as an adjunct to stent retriever. This multicenter retrospective study reports angiographic data, complications, and clinical outcome in patients treated with aspiration thrombectomy as the first-line option. MATERIALS AND METHODS: We analysed the clinical and procedural data of patients treated from January 2014 to March 2015. Recanalization was assessed according to the Thrombolysis in Cerebral Infarction score. Clinical outcome was evaluated at discharge and after 3â months. RESULTS: Overall, 152 patients (mean age 68â years) were treated. Sites of occlusion were 90.8% anterior circulation (including 16.4% tandem extracranial/intracranial occlusions) and 9.2% basilar artery. In 79 patients administration of intravenous tissue plasminogen activator was attempted. Recanalization of the target vessel was obtained in 115/152 cases (75.6%) whereas direct aspiration alone was successful in 83/152 cases (54.6%) with an average puncture to revascularization time of 44.67â min. Symptomatic intracranial hemorrhage occurred in 7.8% and embolization to new territories in 1.9%. 77 patients (50.6%) had a good outcome at 90-day follow-up: 55/96 in the direct aspiration alone group and 22/56 in the aspiration-stent retriever group. CONCLUSIONS: Direct aspiration thrombectomy appears a feasible technique with good revascularization results achieved in more than half the patients. In light of the self-reported data, inhomogeneous patient selection, absence of a core imaging laboratory, and a non-standardized approach, the results should be validated in a larger trial.
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Isquemia Encefálica/diagnóstico por imagen , Isquemia Encefálica/cirugía , Procedimientos Endovasculares/métodos , Accidente Cerebrovascular/diagnóstico por imagen , Accidente Cerebrovascular/cirugía , Trombectomía/métodos , Adulto , Anciano , Anciano de 80 o más Años , Arteria Basilar/diagnóstico por imagen , Arteria Basilar/cirugía , Isquemia Encefálica/epidemiología , Revascularización Cerebral/métodos , Femenino , Estudios de Seguimiento , Humanos , Italia/epidemiología , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Stents/efectos adversos , Accidente Cerebrovascular/epidemiología , Activador de Tejido Plasminógeno/administración & dosificación , Resultado del TratamientoRESUMEN
High mobility group box 1, an evolutionary ancient protein conserved in the eukaryotic kingdom, exerts intra- and extra- cellular functions, orchestrating a homeostatic defensive response in challenged tissues. Its action associated with various inflammatory cells is essential for the occurrence, progression, and persistence of asthma, rhinitis, and nasal polyposis. The recent discovery of High mobility group box 1, as a critical mediator of inflammation, stimulated an increasing interest in the field of inflammation research, suggesting new therapies for atopic and non-atopic inflammatory processes.
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BACKGROUND AND PURPOSE: MR imaging tractography is increasingly used to perform noninvasive presurgical planning for brain gliomas. Recently, constrained spherical deconvolution tractography was shown to overcome several limitations of commonly used DTI tractography. The purpose of our study was to evaluate WM tract alterations of both the corticospinal tract and arcuate fasciculus in patients with high-grade gliomas, through qualitative and quantitative analysis of probabilistic constrained spherical deconvolution tractography, to perform reliable presurgical planning. MATERIALS AND METHODS: Twenty patients with frontoparietal high-grade gliomas were recruited and evaluated by using a 3T MR imaging scanner with both morphologic and diffusion sequences (60 diffusion directions). We performed probabilistic constrained spherical deconvolution tractography and tract quantification following diffusion tensor parameters: fractional anisotropy; mean diffusivity; linear, planar, and spherical coefficients. RESULTS: In all patients, we obtained tractographic reconstructions of the medial and lateral portions of the corticospinal tract and arcuate fasciculus, both on the glioma-affected and nonaffected sides of the brain. The affected lateral corticospinal tract and the arcuate fasciculus showed decreased fractional anisotropy (z = 2.51, n = 20, P = .006; z = 2.52, n = 20, P = .006) and linear coefficient (z = 2.51, n = 20, P = .006; z = 2.52, n = 20, P = .006) along with increased spherical coefficient (z = -2.51, n = 20, P = .006; z = -2.52, n = 20, P = .006). Mean diffusivity values were increased only in the lateral corticospinal tract (z = -2.53, n = 20, P = .006). CONCLUSIONS: In this study, we demonstrated that probabilistic constrained spherical deconvolution can provide essential qualitative and quantitative information in presurgical planning, which was not otherwise achievable with DTI. These findings can have important implications for the surgical approach and postoperative outcome in patients with glioma.
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Neoplasias Encefálicas/diagnóstico , Neoplasias Encefálicas/patología , Imagen de Difusión Tensora/métodos , Glioma/diagnóstico , Glioma/patología , Interpretación de Imagen Asistida por Computador/métodos , Imagen por Resonancia Magnética/métodos , Vías Nerviosas/patología , Tractos Piramidales/patología , Adulto , Anciano , Encéfalo/patología , Femenino , Humanos , Masculino , Persona de Mediana Edad , Clasificación del TumorRESUMEN
BACKGROUND: Though single incision laparoscopic cholecystectomy (SILC) is cosmetically appealing, it is technically a difficult operation. The recent introduction of robotic single-site cholecystectomy (RSSC) has made single incision cholecystectomy easier to perform. While a few papers have reported its application in adults, it has not been documented in children. METHODS: Data on seventeen consecutive children who underwent RSSC by a single surgeon over a ten-month period were retrospectively reviewed. Patient demographics, total operative time, console time, hospital stay, complications and reasons for procedural delay were recorded. RESULTS: Sixteen operations were completed robotically using the single incision robotic platform. No major postoperative complications were noted. Median total operative time was 94 minutes with interquartile range (IQR) being 81.5-119.5 minutes. The median console time was 39 minutes (IQR: 30-72 minutes). The median total operative time for the first eight cases was 118 minutes (IQR: 103-127 minutes) and for the next nine cases 90 minutes (IQR: 76-93 minutes). Common causes for procedural delay were slipped clips, bile spillage, bleeding and leaking Single-Site® port. CONCLUSIONS: This unique series of RSSC documents its feasibility and safety in children. A short learning curve and operative times comparable to RSSC in adults and SILC in children were observed. Being technically easier, RSSC becomes an attractive alternative to SILC to sustain its cosmetic benefit.
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Colecistectomía/métodos , Procedimientos Quirúrgicos Robotizados/métodos , Adolescente , Niño , Preescolar , Colecistectomía Laparoscópica , Estudios de Factibilidad , Femenino , Humanos , Curva de Aprendizaje , Tiempo de Internación , Masculino , Tempo Operativo , Complicaciones Posoperatorias , Estudios Retrospectivos , Adulto JovenRESUMEN
The aim of this study was to provide a comprehensive genetic/phenotypic characterization of subjects suffering infertility owing to sperm macrocephaly (n = 3) or globozoospermia (n = 9) and to investigate whether the patients' genetic status was correlated with the alteration of various sperm parameters. AURKC was sequenced in case of sperm macrocephaly while the DPY19L2 status has been analyzed by multiple approaches including a novel qPCR-based copy number assay in case of globozoospermia. Globozoospermic patients were also analyzed for SPACA1, a novel candidate gene herein tested for the first time in humans. The effect of the patients' genetic status was interrogated by implementing the molecular screening with the characterization of several sperm parameters: (i) routine sperm analysis, integrated with transmission electron microscopy; (ii) sperm fluorescent in situ hybridization (FISH) analysis; (iii) sperm DNA fragmentation (DF) analysis. Moreover, for the first time, we performed microsatellite instability analysis as a marker of genome instability in men with sperm macrocephaly and globozoospermia. Finally, artificial reproductive technology (ART) history has been reported for those patients who underwent the treatment. Macrocephalic patients had an AURKC mutation and >89% tetraploid, highly fragmented spermatozoa. DPY19L2 was mutated in all patients with >80% globozoospermia: the two homozygous deleted men and the compound heterozygous showed the severest phenotype (90-100%). The newly developed qPCR method was fully validated and has the potential of detecting also yet undiscovered deletions. DPY19L2 status is unlikely related to FISH anomalies and DF, although globozoospermic men showed a higher disomy rate and DF compared with internal reference values. No patient was mutated for SPACA1. Our data support the general agreement on the negative correlation between macro/globozoospermia and conventional intracytoplasmic sperm injection outcomes. Microsatellites were stable in all patients analyzed. The comprehensive picture provided on these severe phenotypes causing infertility is of relevance in the management of patients undergoing ART.
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Infertilidad Masculina/complicaciones , Espermatozoides/anomalías , Humanos , Hibridación Fluorescente in Situ , Masculino , Microscopía Electrónica de Transmisión , Espermatozoides/ultraestructuraRESUMEN
PURPOSE: Several authors have demonstrated that preoperative embolization of meningiomas reduces blood loss during surgery. However, preoperative embolization is still under debate. Aim of this study is the retrospective evaluation of necrosis score, surgical time, and transfused blood volume, on patients affected by intracranial meningiomas treated with preoperative embolization before surgery, compared with a control group treated only with surgery. METHOD: Twenty-eight patients with meningiomas were subjected to a preoperative embolization with polyvinyl alcohol (PVA). These patients were divided into two groups: group 1, patients with preoperative embolization performed at least 7 days before surgery; and group 2, patients with preoperative embolization performed less than 7 days before surgery. A statistical evaluation was made by comparing necrosis score, surgical time, and transfused blood volume of these groups. Then, we compared these parameters also with group 3, which included patients with surgically treated meningioma who did not undergo preoperative embolization. RESULTS: Surgery time and transfused blood volume were significantly lower in patients who had been embolized at least 7 days before definitive surgery. Furthermore, large confluent areas of necrosis were significantly more frequent in patients with a larger time span between embolization and surgery. CONCLUSION: Preoperative embolization with PVA in patients with intracranial meningiomas is safe and effective, as it reduces the volume of transfused blood during surgical operation. However, patients should undergo surgery at least 7 days after embolization, as a shorter time interval has been correlated with a longer surgical time and a higher transfused blood volume.
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Transfusión Sanguínea , Embolización Terapéutica/métodos , Neoplasias Meníngeas/terapia , Meningioma/terapia , Procedimientos Neuroquirúrgicos/métodos , Tempo Operativo , Alcohol Polivinílico/uso terapéutico , Determinación del Volumen Sanguíneo , Terapia Combinada , Femenino , Hemostáticos/uso terapéutico , Humanos , Masculino , Neoplasias Meníngeas/diagnóstico , Meningioma/diagnóstico , Persona de Mediana Edad , Necrosis/diagnóstico , Necrosis/prevención & control , Cuidados Preoperatorios/métodos , Interpretación de Imagen Radiográfica Asistida por Computador/métodos , Radiografía Intervencional/métodos , Estudios Retrospectivos , Índice de Severidad de la Enfermedad , Resultado del TratamientoRESUMEN
STUDY QUESTION: Are Y-chromosome microdeletions associated with SHOX haploinsufficiency, thus representing a risk of skeletal anomalies for the carriers and their male descendents? SUMMARY ANSWER: The present study shows that SHOX haploinsufficiency is unlikely to be associated with Y-chromosome microdeletions. WHAT IS KNOWN ALREADY: Y-chromosome microdeletions are not commonly known as a major molecular genetic cause of any pathological condition except spermatogenic failure. However, it has been recently proposed that they are associated not only with infertility but also with anomalies in the pseudoautosomal regions (PAR), among which SHOX haploinsufficiency stands out with a frequency of 5.4% in microdeletion carriers bearing a normal karyotype. This finding implies that sons fathered by men with Y-chromosome defects will not only exhibit fertility problems, but might also suffer from SHOX-related conditions. STUDY DESIGN: Five European laboratories (Florence, Münster, Barcelona, Padova and Ancona), routinely performing Y-chromosome microdeletion screening, were enrolled in a multicenter study. PARTICIPANTS/MATERIALS, SETTING, METHODS: PAR-linked and SHOX copy number variations (CNVs) were analyzed in 224 patients carrying Y-chromosome microdeletions and 112 controls with an intact Y chromosome, using customized X-chromosome-specific array-CGH platforms and/or qPCR assays for SHOX and SRY genes. MAIN RESULTS AND THE ROLE OF CHANCE: Our data show that 220 out of 224 (98.2%) microdeletion carriers had a normal SHOX copy number, as did all the controls. No SHOX deletions were found in any of the examined subjects (patients as well as controls), thus excluding an association with SHOX haploinsufficiency. SHOX duplications were detected in 1.78% of patients (n = 4), of whom two had an abnormal and two a normal karyotype. This might suggest that Y-chromosome microdeletions have a higher incidence for SHOX duplications, irrespective of the patient's karyotype. However, the only clinical condition observed in our four SHOX-duplicated patients was infertility. LIMITATIONS, REASONS FOR CAUTION: The number of controls analyzed is rather low to assess whether the SHOX duplications found in the two men with Y-chromosome microdeletions and a normal karyotype represent a neutral polymorphism or are actually associated with the presence of the microdeletion. WIDER IMPLICATIONS OF THE FINDINGS: Men suffering from infertility due to the presence of Y-chromosome microdeletions can resort to artificial reproductive technology (ART) to father their biological children. However, infertile couples must be aware of the risks implied and this makes genetic counseling a crucial step in the patient's management. This study does not confirm previous alarming data that showed an association between Y-chromosome microdeletions and SHOX haploinsufficiency. Our results imply that deletion carriers have no augmented risk of SHOX-related pathologies (short stature and skeletal anomalies) and indicate that there is no need for radical changes in genetic counseling of Yq microdeletion carriers attempting ART, since the only risk established so far for their male offspring remains impaired spermatogenesis. STUDY FUNDING/COMPETING INTEREST(S): This work was supported by the Italian Ministry of University (grant PRIN 2010-2012 to C.K.), Tuscan Regional Health Research Program ('Progetto Salute 2009') to G.F., the Spanish Ministry of Health (grant FIS-11/02254) and the European Union 'Reprotrain' Marie Curie Network (project number: 289880 to C.K.). The authors declare that no conflicting interests exist.
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Cromosomas Humanos Y , Haploinsuficiencia/genética , Proteínas de Homeodominio/genética , Hibridación Genómica Comparativa , Duplicación de Gen , Humanos , Infertilidad Masculina/genética , Cariotipo , Masculino , Fenotipo , Eliminación de Secuencia , Proteína de la Caja Homeótica de Baja EstaturaRESUMEN
The cognitive dysmetria theory suggests a disconnectivity between the dorsolateral prefrontal cortex, thalami and vermis to explain the pathophysiology of schizophrenia. This study investigated the metabolic integrity of this neurologic circuit in patients with schizophrenia using proton magnetic resonance spectroscopy (H-MRS). Twenty-two patients with schizophrenia and twelve control subjects were studied. Metabolites concentrations were evaluated by a single-voxel technique in the prefrontal cortex, thalami and vermis. To our knowledge, this is the first H-MRS experience with concomitant evaluation of these regions in schizophrenic patients. We found no significant statistical difference in N-AA, Cho and Cr absolute concentrations and N-AA/Cho, N-AA/Cr and Cho/Cr ratios between the schizophrenic patients and control group. At the vermis, we found a constant spectrum with low levels of N-AA and higher levels of Cho and Cr. Our experience does not clearly support or refute the cognitive dysmetria theory. The consistency of metabolic findings in the cerebellar vermis could represent an important datum, highlighting the specificity of metabolic and functional activity in this region.
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Cerebelo/metabolismo , Espectroscopía de Resonancia Magnética , Corteza Prefrontal/metabolismo , Esquizofrenia/patología , Tálamo/metabolismo , Adulto , Análisis de Varianza , Ácido Aspártico/metabolismo , Cerebelo/patología , Colina/metabolismo , Creatina/metabolismo , Femenino , Humanos , Imagen por Resonancia Magnética , Masculino , Corteza Prefrontal/patología , Protones , Escalas de Valoración Psiquiátrica , Esquizofrenia/metabolismo , Tálamo/patologíaRESUMEN
The oral cavity is a complex anatomical region consisting of different anatomical sites and subsites. Cancer undoubtedly represents the most frequent and relevant disease of this region. Clinical examination is often the first approach to oral cavity tumours. Cross-sectional computed tomography (CT) and magnetic resonance imaging (MRI) play a key role in staging locoregional disease by demonstrating submucosal spread and involvement of deep layers; evaluation of specific pathways of spread to peculiar anatomical subsites is also fundamental information that can be obtained with these techniques. The purpose of this paper is to illustrate CT and MRI findings of anatomical subsites involved by tumours of the oral cavity.
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Imagen por Resonancia Magnética/métodos , Neoplasias de la Boca/diagnóstico , Tomografía Computarizada por Rayos X/métodos , Humanos , Neoplasias de la Boca/diagnóstico por imagen , Neoplasias de la Boca/patología , Estadificación de NeoplasiasRESUMEN
BACKGROUND: Retroperitoneal teratomas account for 5% of teratomas and occur predominantly in infants. The resection of these tumors has been variously reported as easy or difficult. This report presents a series of retroperitoneal teratomas and reviews the literature focusing on the relevant operative considerations in this tumor. METHODS: A retrospective chart review from 1996 to 2011 identified five children with retroperitoneal teratomas. Clinical features, radiologic findings, operative details, and outcome were recorded. The literature was reviewed to identify operative complications for these tumors. RESULTS: Out of the five patients, four were infants. The tumor was characterized by dense adhesions in all patients, and resection was complicated by gastric and common bile duct injury. Hiatal hernia repair was required in one and spillage was seen in two patients. One patient had a staged resection after birth with colostomy, vesicostomy, and eventual death on day 12 of life. Inferior vena cava (IVC) ligation was required in one. A total of four patients were well on long-term follow-up. Review of the literature revealed that computed tomography scan while being sufficient for diagnosing a retroperitoneal teratoma is often inadequate in delineating the vascular anatomy, which is usually distorted. The IVC and the mesenteric vessels may be inseparable and require ligation. Renal vessel injury is possible, leading onto ischemia and hypertension. The tumor may be intimately adherent to the viscera in the abdomen, making resection complicated. Adequate resection is possible and necessary for cure, but not always possible with clear resection margins. Late complications include recurrence, adhesions, and hypertension. The perioperative mortality is 0 to 8% and the complication rate is 50 to 100%. CONCLUSION: Surgical resection of retroperitoneal teratomas, while being the mainstay of treatment is challenging in view of its size, adhesions, and vascular distortion.
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Neoplasias Retroperitoneales/cirugía , Teratoma/cirugía , Biomarcadores/sangre , Niño , Hernia Hiatal/complicaciones , Hernia Hiatal/diagnóstico por imagen , Hernia Hiatal/cirugía , Humanos , Lactante , Radiografía , Neoplasias Retroperitoneales/sangre , Neoplasias Retroperitoneales/complicaciones , Neoplasias Retroperitoneales/diagnóstico por imagen , Neoplasias Retroperitoneales/mortalidad , Análisis de Supervivencia , Teratoma/sangre , Teratoma/complicaciones , Teratoma/diagnóstico por imagen , Teratoma/mortalidad , Resultado del Tratamiento , Estados Unidos , alfa-Fetoproteínas/metabolismoRESUMEN
PURPOSE: This study was undertaken to evaluate the potential of multidetector computed tomography (MDCT) for multiplanar visualisation of the tympanic canaliculus both in healthy individuals and in patients affected by chronic inflammatory disease of the middle ear. MATERIALS AND METHODS: A preliminary study was performed on three dried skulls by placing a metal landmark inside the tympanic canal lumen with a view to optimising depiction by multiplanar CT. Subsequently, 50 patients were enrolled in a prospective study. Three of the 100 petrous pyramids studied were excluded owing to the presence of jugulotympanic glomus tumour with severe bone changes. RESULTS: The entire course of the tympanic canaliculus was identified in 80/97 petrous pyramids (82.4%), 57 of which were normal (75.4% detection rate) and 40 pathological (90% detection rate). To assess the tympanic canaliculus in the pathological petrous pyramids and evaluate its possible role in the disease process, some qualitative criteria were introduced: canal enlargement, loss of margin sharpness, focal erosion of canal margins and presence of pathological tissue. CONCLUSIONS: MDCT represents the only technique allowing evaluation of the tympanic canal in vivo and with multiplanar images in a large number of cases (82.4%).
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Hueso Petroso/anatomía & histología , Tomografía Computarizada por Rayos X , Adulto , Anciano , Oído Medio/diagnóstico por imagen , Oído Medio/inervación , Femenino , Nervio Glosofaríngeo/anatomía & histología , Humanos , Técnicas In Vitro , Masculino , Persona de Mediana Edad , Otitis Media/diagnóstico por imagenRESUMEN
Non-traumatic intradiploic arachnoid cyst is a rare condition. We describe a young man with typical trigeminal neuralgia and intradiploic arachnoid cyst at the greater wing of the sphenoid. The patient was successfully treated with medical therapy. To our knowledge, this is the first case report of a possible correlation between trigeminal neuralgia and intraosseous arachnoid cyst. We describe the clinical case, the possible pathogenetic mechanism and briefly review the literature.
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We conducted a survey among pediatric surgeons to examine the impact of the advent of minimally invasive surgery (MIS) on the pediatric surgical profession with respect to job satisfaction and training challenges. An invitation to participate in a web-based questionnaire was sent out to 306 pediatric surgeons. Apart from demographic details and training recommendations, parameters relevant to job satisfaction, including patient interaction, peer pressure, ethical considerations, academic progress, ability to train residents, and financial remuneration, were studied. The response rate was 38.2%. Working in a unit performing MIS was identified by 71% of respondents as the most effective and feasible modality of training in MIS. Inability to get away from a busy practice was the most common reason cited for inability to acquire MIS training. The overall responses to the job satisfaction parameters showed a positive trend in the current MIS era for patient interaction, ethical considerations, academic progress, and training residents, with a negative trend for peer pressure and financial remuneration. The enthusiastic minimally invasive surgeons (EMIS) were defined as those having more than 5 years of MIS experience and also performing more than 10% of their work using MIS. Of the 113 responses analyzed, 67 belonged to the EMIS category. Those belonging to the EMIS group were less likely to feel inadequate in training their residents, in meeting the felt needs of the patients, or to complain about peer pressure. They were more likely to consider MIS to be as relevant and beneficial in children as in adults. Embracing MIS, as represented by the EMIS group, correlated with an overall greater job satisfaction.
Asunto(s)
Procedimientos Quirúrgicos Mínimamente Invasivos , Pediatría , Especialidades Quirúrgicas , Movilidad Laboral , Distribución de Chi-Cuadrado , Ética Médica , Humanos , Satisfacción en el Trabajo , Pediatría/economía , Pediatría/educación , Pediatría/ética , Grupo Paritario , Relaciones Médico-Paciente , Especialidades Quirúrgicas/economía , Especialidades Quirúrgicas/educación , Especialidades Quirúrgicas/ética , Estadísticas no Paramétricas , Encuestas y Cuestionarios , Carga de TrabajoRESUMEN
BACKGROUND: Different forms of small group interactive teaching have found an increasing role in medical education in the recent past. OBJECTIVES: This study aimed to evaluate the efficacy of topic-based small group tutorials and compare between two such tutorials, the directed tutorial where the tutor takes the initiative and the inductive tutorial which places the initiative on the student. METHODS: Final-year medical students were exposed to alternate sessions of directed and inductive teaching during their rotation in paediatric surgery. For inductive teaching, the topic was announced and the students took turns in asking questions and answering them, the tutor stepping in only when required. The tutor both initiated and guided the discussion in the directed method. Students assessed the tutorials and compared the two learning methods evaluating eight different parameters using a Likert scale. Statistical significance was tested using the Wilcoxon signed ranks test. RESULTS: Feedback was available from 49 out of 52 students. The tutorials were ranked highly for all parameters studied. The inductive method was better for comfort, interest, memory, inspiration to read more, comprehension and for correlation with previous knowledge (P < 0.05). The directed method was superior for the content covered in a given time (P < 0.001). CONCLUSIONS: The topic-based tutorials were effective. The inductive method by adding a reflective component, appeared to facilitate deep learning. Further research will determine its suitability for formal introduction into the curriculum.