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1.
Gastroenterology ; 164(6): 978-989.e6, 2023 05.
Artículo en Inglés | MEDLINE | ID: mdl-36775072

RESUMEN

BACKGROUND & AIMS: Previous studies have shown an increasing incidence of pancreatic cancer (PC), especially in younger women; however, this has not been externally validated. In addition, there are limited data about contributing factors to this trend. We report age and sex-specific time-trend analysis of PC age-adjusted incidence rates (aIRs) using the National Program of Cancer Registries database without Surveillance Epidemiology and End Results data. METHODS: PC aIR, mortality rates, annual percentage change, and average annual percentage change (AAPC) were calculated and assessed for parallelism and identicalness. Age-specific analyses were conducted in older (≥55 years) and younger (<55 years) adults. PC incidence based on demographics, tumor characteristics, and mortality were evaluated in younger adults. RESULTS: A total of 454,611 patients were diagnosed with PC between 2001 and 2018 with significantly increasing aIR in women (AAPC = 1.27%) and men (AAPC = 1.14%) without a difference (P = .37). Similar results were seen in older adults. However, in younger adults (53,051 cases; 42.9% women), women experienced a greater increase in aIR than men (AAPCs = 2.36%, P < .001 vs 0.62%, P = 0.62) with nonparallel trends (P < .001) and AAPC difference of 1.74% (P < .001). This AAPC difference appears to be due to rising aIR in Blacks (2.23%; P < .001), adenocarcinoma histopathologic subtype (0.89%; P = .003), and location in the head-of-pancreas (1.64%; P < .001). PC mortality was found to be unchanged in women but decreasing in counterpart men (AAPC difference = 0.54%; P = .001). CONCLUSION: Using nationwide data, covering ≈64.5% of the U.S. population, we externally validate a rapidly increasing aIR of PC in younger women. There was a big separation of the incidence trend between women and men aged 15-34 years between 2001 and 2018 (>200% difference), and it did not show slowing down.


Asunto(s)
Neoplasias Pancreáticas , Masculino , Humanos , Femenino , Estados Unidos/epidemiología , Anciano , Incidencia , Sistema de Registros , Neoplasias Pancreáticas/epidemiología , Páncreas , Neoplasias Pancreáticas
2.
Dig Dis Sci ; 69(8): 2734-2740, 2024 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-39090443

RESUMEN

The z-line refers to the squamocolumnar junction which marks the transition between the normal stratified squamous epithelium of the distal esophagus and the columnar epithelium of the gastric cardia. An "irregular" z-line refers to an irregular appearing squamocolumnar junction characterized by the presence of columnar mucosa less than 1 cm in length that extends above the gastroesophageal junction. In contrast, Barrett's esophagus is diagnosed when columnar mucosa of at least 1 cm is seen in the distal esophagus extending above the gastroesophageal junction with biopsies demonstrating specialized intestinal metaplasia. Current guidelines recommend against taking routine biopsies from a normal or irregular z-line in the absence of visible abnormalities and advise against endoscopic surveillance in this patient population, in large part due to multiple studies demonstrating lack of progression to advanced neoplasia such as high-grade dysplasia or esophageal adenocarcinoma in patients with an irregular z-line. Despite these recommendations, a sizable number of patients without Barrett's esophagus undergo biopsies from the z-line and are subsequently recommended to have surveillance endoscopies. Furthermore, patients with an irregular z-line are often mislabelled as Barrett's esophagus resulting in significant downstream consequences including higher healthcare costs and reduced health-related quality of life. In this review, we highlight the importance of landmark identification of the distal esophagus and gastroesophageal junction at the time of endoscopy, share recommendations from current guidelines related to the z-line, examine rates of neoplastic progression in those with an irregular z-line, discuss consequences of routinely biopsying an irregular z-line, and highlight strategies on how to approach an irregular z-line if seen on endoscopy. A careful, high-quality endoscopic examination can help to identify visible abnormalities at the z-line, which, if present, should be targeted for biopsies to rule out dysplasia and neoplasia.


Asunto(s)
Esófago de Barrett , Neoplasias Esofágicas , Humanos , Esófago de Barrett/patología , Esófago de Barrett/diagnóstico , Biopsia/métodos , Neoplasias Esofágicas/patología , Neoplasias Esofágicas/diagnóstico , Unión Esofagogástrica/patología , Esófago/patología , Adenocarcinoma/patología , Adenocarcinoma/diagnóstico , Cardias/patología , Esofagoscopía/métodos
3.
Mycopathologia ; 189(6): 91, 2024 Oct 10.
Artículo en Inglés | MEDLINE | ID: mdl-39387982

RESUMEN

In the last few years, next-generation sequencing (NGS) has emerged as a technology for laboratory diagnosis of many culture-negative infections and slow-growing microorganisms. In this study, we describe the use of metagenomic NGS (mNGS) for rapid diagnosis of T. marneffei infection in a 37-year-old renal transplant recipient who presented with chronic pneumonia syndrome. Bronchoalveolar lavage for mNGS was positive for T. marneffei sequence reads. Prolonged incubation of the bronchoalveolar lavage revealed T. marneffei colonies after 6 days of incubation. Analysis of 23 cases of T. marneffei infections in renal transplant recipients from the literature revealed that the number of cases ranged from 1 to 4 cases per five years from 1990 to 2020; but increased rapidly to 9 cases from 2021 to 2023, with 7 of them diagnosed by NGS. Twenty of the 23 cases were from T. marneffei-endemic areas [southern part of mainland China (n = 9); Hong Kong (n = 4); northeastern India (n = 2); Indonesia (n = 1) and Taiwan (n = 4)]. For the 3 patients from non-T. marneffei-endemic areas [United Kingdom (n = 2) and Australia (n = 1)], they had travel histories to China and Vietnam respectively. The time taken for diagnosis by mNGS [median 1 (range 1 to 2) day] was significantly shorter than that for fungal culture [median 6 (range 3 to 15) days] (P = 0.002). mNGS is useful for picking up more cases of T. marneffei infections in renal transplant recipients as well as providing a rapid diagnosis. Talaromycosis is an emerging fungal infection in renal transplant recipients.


Asunto(s)
Secuenciación de Nucleótidos de Alto Rendimiento , Trasplante de Riñón , Micosis , Talaromyces , Receptores de Trasplantes , Humanos , Talaromyces/genética , Talaromyces/aislamiento & purificación , Trasplante de Riñón/efectos adversos , Adulto , Micosis/diagnóstico , Micosis/microbiología , Masculino , Metagenómica/métodos , China , Líquido del Lavado Bronquioalveolar/microbiología
4.
Mycopathologia ; 189(3): 38, 2024 May 05.
Artículo en Inglés | MEDLINE | ID: mdl-38704795

RESUMEN

OBJECTIVES: To describe the epidemiology of Pneumocystis jirovecii pneumonia and colonization diagnosed by next-generation sequencing (NGS) and explore the usefulness of the number of P. jirovecii sequence reads for the diagnosis of P. jirovecii pneumonia. METHODS: We examined the NGS results for P. jirovecii in respiratory samples collected from patients and analysed their clinical, radiological and microbiological characteristics. RESULTS: Among 285 respiratory samples collected over a 12-month period (January to December 2022), P. jirovecii sequences were detected in 56 samples from 53 patients. Fifty (94.3%) of the 53 patients were HIV-negative. Following our case definitions, 37 (69.8%) and 16 (30.2%) of the 53 patients had P. jirovecii infection and colonization respectively. P. jirovecii infection was associated with presence of underlying disease with immunosuppression (94.6% vs 18.8%, P < 0.05), positive serum 1,3-ß-D-glucan (41.2% vs 0%, P < 0.01) and higher number of P. jirovecii sequence reads (P < 0.005). In contrast, P. jirovecii colonization was associated with the male sex (93.8% vs 54.1%, P < 0.01), another definitive infectious disease diagnosis of the respiratory tract (43.8% vs 2.7%, P < 0.001) and higher survival (100% vs 67.6%, P < 0.01). Although P. jirovecii pneumonia was associated with higher number of P. jirovecii reads in respiratory samples, only a sensitivity of 82.14% and a specificity of 68.75% could be achieved. CONCLUSION: Detection of P. jirovecii sequences in respiratory samples has to be interpreted discreetly. A combination of clinical, radiological and laboratory findings is still the most crucial in determining whether a particular case is genuine P. jirovecii pneumonia.


Asunto(s)
Secuenciación de Nucleótidos de Alto Rendimiento , Pneumocystis carinii , Neumonía por Pneumocystis , Humanos , Neumonía por Pneumocystis/diagnóstico , Neumonía por Pneumocystis/microbiología , Masculino , Pneumocystis carinii/genética , Pneumocystis carinii/aislamiento & purificación , Femenino , Persona de Mediana Edad , Anciano , Adulto , Anciano de 80 o más Años , Sistema Respiratorio/microbiología , Adulto Joven , Técnicas de Diagnóstico Molecular/métodos
5.
Gastrointest Endosc ; 97(5): 859-870.e5, 2023 05.
Artículo en Inglés | MEDLINE | ID: mdl-36572125

RESUMEN

BACKGROUND AND AIMS: Upper GI-tracheobronchial fistula is a morbid condition with high mortality. It is a challenge for endoscopists because currently available treatments have severe limitations. In this study we assessed the efficacy and safety of an occluder we invented for endoscopic closure of refractory upper GI-tracheobronchial fistulas. METHODS: This was a prospective, single-arm, single-center trial conducted between September 2020 and March 2022. All patients undergoing occluder placement were eligible to enroll. The primary endpoints were clinical success rate (CSR) and complete closure rate (CCR) at 3 months and safety. Secondary efficacy endpoints were technical success rates, CSRs and CCRs at 1 and 6 months, near-complete closure rates, change from baseline in body mass index (BMI), and health-related quality of life (HRQoL) at 1, 3, and 6 months. RESULTS: Twenty-eight patients (mean age, 63.2 years; 23 men) were enrolled. Eighteen through-the-scope occluders (TTSOs) and 10 through-the-overtube occluders (TTOOs) were implanted, with a technical success rate of 100%. The mean procedure time for the TTSO and TTOO groups were 28.0 ± 8.0 minutes and 31.8 ± 7.7 minutes, respectively. The CSRs at 1, 3, and 6 months were 92.9%, 96.4%, and 92.0% and the CCRs were 60.7%, 60.7%, and 60.0%, respectively. The mean BMI at 3 and 6 months and HRQoL at 1, 3, and 6 months were significantly increased compared with baseline (P < .05). Two completely occluded fistulas had 1-sided or complete healing by coverage of granulation tissue and re-epithelialized mucosa at a follow-up of 6 and 12 months. All 14 adverse events were either mild and transient or easily corrected. CONCLUSIONS: Our clinical outcomes suggest that this novel GI occluder is a safe and effective salvage option for patients with refractory upper GI-tracheobronchial fistulas. (Clinical trial registration number: ChiCTR2000038566.).


Asunto(s)
Fístula , Calidad de Vida , Masculino , Humanos , Persona de Mediana Edad , Estudios Prospectivos , Endoscopía , Resultado del Tratamiento , Estudios Retrospectivos
6.
J Gastroenterol Hepatol ; 38(4): 584-589, 2023 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-36582040

RESUMEN

BACKGROUND AND AIM: Dedicated studies evaluating the impact of COVID-19 on outcomes of pancreatobiliary IgG4 related disease (IgG4-RD) patients are scarce. Whether COVID-19 infection or vaccination would trigger IgG4-RD exacerbation remains unknown. METHODS: Pancreatobiliary IgG4-RD patients ≥ 18 years old with active follow-up since January 2020 from nine referral centers in Asia, Europe, and North America were included in this multicenter retrospective study. Outcome measures include incidence and severity of COVID-19 infection, IgG4-RD disease activity and treatment status, interruption of indicated IgG4-RD treatment. Prospective data on COVID-19 vaccination status and new COVID-19 infection during the Omicron outbreak were also retrieved in the Hong Kong cohort. RESULTS: Of the 124 pancreatobiliary IgG4-RD patients, 25.0% had active IgG4-RD, 71.0% were on immunosuppressive therapies and 80.6% had ≥ 1 risk factor for severe COVID. In 2020 (pre-vaccination period), two patients (1.6%) had COVID-19 infection (one requiring ICU admission), and 7.2% of patients had interruptions in indicated immunosuppressive treatment for IgG4-RD. Despite a high vaccination rate (85.0%), COVID-19 infection rate has increased to 20.0% during Omicron outbreak in the Hong Kong cohort. A trend towards higher COVID-19 infection rate was noted in the non-fully vaccinated/unvaccinated group (17.6% vs 33.3%, P = 0.376). No IgG4-RD exacerbation following COVID-19 vaccination or infection was observed. CONCLUSION: While a low COVID-19 infection rate with no mortality was observed in pancreatobiliary IgG4-RD patients in the pre-vaccination period of COVID-19, infection rate has increased during the Omicron outbreak despite a high vaccination rate. No IgG4-RD exacerbation after COVID-19 infection or vaccination was observed.


Asunto(s)
COVID-19 , Enfermedad Relacionada con Inmunoglobulina G4 , Humanos , Adolescente , Estudios Retrospectivos , COVID-19/epidemiología , COVID-19/prevención & control , Vacunas contra la COVID-19 , Estudios Prospectivos , Inmunoglobulina G , Vacunación , Hong Kong/epidemiología
7.
Am J Gastroenterol ; 117(8): 1246-1254, 2022 08 01.
Artículo en Inglés | MEDLINE | ID: mdl-35584332

RESUMEN

INTRODUCTION: Fundic gland polyps (FGPs) are commonly found in patients with familial adenomatous polyposis (FAP) and are considered benign. Biopsies are not routinely performed, and conventional forceps may be time-consuming and/or yield nonrepresentative histology. The purpose of this study was to evaluate the role of a novel endoscopic polypectomy surveillance (EPS), a large volume cold-snare polypectomy technique of random FGPs, in the incidence of dysplasia and gastric cancer (GC) in FAP. METHODS: This is a retrospective longitudinal cohort of patients with FAP referred to a tertiary care center for duodenal adenoma surveillance and who underwent EPS of FGPs between 2001 and 2019. Demographic, endoscopic, and clinicopathologic information was reviewed. RESULTS: Thirty-five patients with FAP were identified at initial endoscopy by the mean age of 43.4 years (±12.8). One hundred thirteen surveillance endoscopies were performed in total using EPS. Dysplasia of FGPs was present on initial esophagogastroduodenoscopy in 7 patients (20%), and 13 additional patients (46.4%) progressed to low-grade dysplasia. Three patients (15%) who subsequently had progression to GC were found to have signet ring cell cancer within the foci of FGPs through EPS. One patient presented as metastatic GC. Progression from nondysplastic FGP to low-grade dysplasia occurred over 63 months (±46.3) with further progression to GC over 34 months (±8.5). Endoscopic risk factors for cancer were polyps >10 mm in size ( P < 0.001) and carpeting of polyps ( P < 0.001). The 5-year cumulative incidence of developing dysplasia was 35.7%. DISCUSSION: We identified that the incidence of dysplasia and GC is higher than previously reported in patients with FAP. Our study used a novel EPS technique and was able to identify GC within the foci of FGPs. Upper endoscopic guidelines should include a more rigorous sampling method for FGPs, such as EPS, to optimize early detection of dysplasia and GC.


Asunto(s)
Poliposis Adenomatosa del Colon , Pólipos , Neoplasias Gástricas , Poliposis Adenomatosa del Colon/complicaciones , Poliposis Adenomatosa del Colon/diagnóstico , Poliposis Adenomatosa del Colon/cirugía , Pólipos Adenomatosos , Adulto , Detección Precoz del Cáncer , Gastroscopía , Humanos , Estudios Longitudinales , Pólipos/patología , Estudios Retrospectivos , Neoplasias Gástricas/diagnóstico , Neoplasias Gástricas/epidemiología , Neoplasias Gástricas/cirugía
8.
Gastrointest Endosc ; 96(5): 771-779, 2022 11.
Artículo en Inglés | MEDLINE | ID: mdl-35697128

RESUMEN

BACKGROUND AND AIMS: Endoscopic suturing and over-the-scope clips (OTSCs) are used to prevent migration of fully covered self-expandable metal stents (FCSEMSs). Recently, a dedicated OTSC was developed for securing FCSEMSs. Our primary aim was to compare the frequency of stent migration without stent fixation versus fixation with suturing or OTSCs, and out secondary aims were to compare clinical success, procedure duration, and adverse events. METHODS: A retrospective cohort study evaluated the outcome of stent placement throughout the entire GI tract from 2013 to 2021. Stent migration was determined as stent displacement ≥2 cm endoscopically or radiographically. Clinical success was defined as resolution of indication at follow-up. RESULTS: Four hundred thirty-three procedures were performed, 239 (55%) without fixation, 140 (32%) with suturing, and 54 (12%) with OTSCs. Stent migration rates were 62% without fixation, 57% with suturing, and 35% with OTSCs (P = .013). The median time to stent migration was 3 weeks without fixation, 5 weeks with suturing, and 6 weeks with OTSCs (P = .023). The clinical success rate was 43%. The median procedure time for OTSCs was shorter compared with suturing (42 vs 68 minutes, P = .002). Adverse event rates trended toward being lowest with OTSCs at 9% compared with 21% without fixation and 18% with suturing (P > .05). CONCLUSIONS: OTSCs for stent fixation were found to have significantly lower migration rates compared with no fixation and suturing. Moreover, OTSCs were associated with decreased overall procedure time and total costs per procedure while trending to be associated with fewer adverse events.


Asunto(s)
Stents Metálicos Autoexpandibles , Técnicas de Sutura , Humanos , Estudios Retrospectivos , Suturas , Stents Metálicos Autoexpandibles/efectos adversos , Stents , Esofagoscopía/métodos , Resultado del Tratamiento
9.
Dig Dis Sci ; 67(5): 1613-1623, 2022 05.
Artículo en Inglés | MEDLINE | ID: mdl-35348969

RESUMEN

Over 30% of all endoscopic retrograde cholangiography procedures in the US are associated with biliary stone extraction, and over 10-15% of these cases are noted to be complex or difficult. The aim of this review is to define the characteristics of difficult common bile duct stones and provide an algorithmic therapeutic approach to these difficult cases. We describe additional special clinical circumstances in which difficult biliary stones are identified and provide additional management strategies to aid endoscopic stone extraction efforts.


Asunto(s)
Coledocolitiasis , Cálculos Biliares , Litotricia , Cateterismo/métodos , Colangiopancreatografia Retrógrada Endoscópica/métodos , Coledocolitiasis/diagnóstico por imagen , Coledocolitiasis/cirugía , Cálculos Biliares/terapia , Humanos , Litotricia/métodos , Resultado del Tratamiento
10.
Clin Gastroenterol Hepatol ; 19(6): 1282-1284, 2021 06.
Artículo en Inglés | MEDLINE | ID: mdl-32454259

RESUMEN

Percutaneous transhepatic biliary drainage (PTBD) and endoscopic retrograde cholangiopancreatography (ERCP) are widely accepted but competing approaches for the management of malignant obstruction at the hilum of the liver. ERCP is favored in the United States on the basis of high success rates for non-hilar indications, the perceived safety and superior tissue sampling capability of ERCP relative to PTBD, and the avoidance of external drains that are undesirable to patients. A recent randomized controlled trial (RCT) comparing the 2 modalities in patients with resectable hilar cholangiocarcinoma was terminated prematurely because of higher mortality in the PTBD group.1 In contrast, most observational data suggest that PTBD is superior for achieving complete drainage.2-6 Because the preferred procedure remains uncertain, we aimed to compare PTBD and ERCP as the primary intervention in patients with cholestasis due to malignant hilar obstruction (MHO).


Asunto(s)
Neoplasias de los Conductos Biliares , Colestasis , Neoplasias de los Conductos Biliares/complicaciones , Conductos Biliares Intrahepáticos , Colangiopancreatografia Retrógrada Endoscópica , Colestasis/cirugía , Drenaje , Endosonografía , Humanos
11.
Curr Opin Gastroenterol ; 37(5): 434-440, 2021 09 01.
Artículo en Inglés | MEDLINE | ID: mdl-34265795

RESUMEN

PURPOSE OF REVIEW: The aim of this study was to provide practical tips to readers on how to perform deep enteroscopy efficiently. RECENT FINDINGS: Deep enteroscopy has revolutionized the diagnosis and management of small intestinal conditions in recent years. They are extremely valuable, but may be technically challenging to perform, regardless if it is double balloon enteroscopy, single balloon enteroscopy or spiral enteroscopy. The common issues to these procedures are repetitive motion, extended procedure duration and physical exertion during scope advancement. These situations may in turn lead to a variety of ergonomic issues that need to be addressed accordingly to prevent occupational injuries to the endoscopists and their assistants. Depending on the clinical indications, the technical approach and execution of these procedures may be carried out differently. Some guiding principles may be applied to make performing these procedures more smoothly, effectively and deeply. SUMMARY: Careful planning and skilful manipulations are essential to performing an efficient and stress-free deep enteroscopy. There are many simple ways to improve on the ergonomics and performance of these procedures.


Asunto(s)
Enfermedades Intestinales , Laparoscopía , Enteroscopía de Doble Balón , Endoscopía Gastrointestinal , Humanos , Enfermedades Intestinales/cirugía , Intestino Delgado/diagnóstico por imagen
12.
Endoscopy ; 53(4): 346-353, 2021 04.
Artículo en Inglés | MEDLINE | ID: mdl-32663877

RESUMEN

BACKGROUND: Flexible endoscopic myotomy has been increasingly performed for Zenker's diverticulum using various endoscopic techniques and devices. The main aims of this study were to assess practice patterns and compare outcomes of endoscopic myotomy for Zenker's diverticulum. METHODS: Procedures performed at 12 tertiary endoscopy centers from 1/2012 to 12/2018 were reviewed. Patients (≥ 18 years) with Zenker's diverticulum who had dysphagia and/or regurgitation and underwent endoscopic myotomy were included. Outcomes assessed included technical success, clinical success, and adverse events. RESULTS: 161 patients were included. Traditional endoscopic septotomy was performed most frequently (137/161, 85.1 %) followed by submucosal dissection of the septum and myotomy (24/161, 14.9 %). The hook knife (43/161, 26.7 %) and needle-knife (33/161, 20.5 %) were used most frequently. Overall, technical and clinical success rates were 98.1 % (158/161) and 78.1 % (96/123), respectively. Adverse events were noted in 13 patients (8.1 %). There was no significant difference in technical and clinical success between traditional septotomy and submucosal dissection groups (97.1 % vs. 95.8 %, P = 0.56 and 75.2 % vs. 90.9 %, P  = 0.16, respectively). Clinical success was higher with the hook knife (96.7 %) compared with the needle-knife (76.6 %) and insulated tip knife (47.1 %). Outcomes were similar between centers performing > 20, 11 - 20, and ≤ 10 procedures. CONCLUSIONS: Flexible endoscopic myotomy is an effective therapy for Zenker's diverticulum, with a low rate of adverse events. There was no significant difference in outcomes between traditional septotomy and a submucosal dissection approach, or with centers with higher volume, though clinical success was higher with the hook knife.


Asunto(s)
Trastornos de Deglución , Miotomía , Divertículo de Zenker , Trastornos de Deglución/etiología , Esofagoscopía , Humanos , Estudios Retrospectivos , Resultado del Tratamiento , Divertículo de Zenker/cirugía
13.
Dig Dis Sci ; 65(9): 2595-2604, 2020 09.
Artículo en Inglés | MEDLINE | ID: mdl-32140945

RESUMEN

BACKGROUND: Most gut microbiome studies have been performed using stool samples. However, the small intestine is of central importance to digestion, nutrient absorption, and immune function, and characterizing its microbial populations is essential for elucidating their roles in human health and disease. AIMS: To characterize the microbial populations of different small intestinal segments and contrast these to the stool microbiome. METHODS: Male and female subjects undergoing esophagogastroduodenoscopy without colon preparation were prospectively recruited. Luminal aspirates were obtained from the duodenum, jejunum, and farthest distance reached. A subset also provided stool samples. 16S rRNA sequencing was performed and analyses were carried out using CLC Genomics Workbench. RESULTS: 16S rRNA sequencing identified differences in more than 2000 operational taxonomic units between the small intestinal and stool microbiomes. Firmicutes and Proteobacteria were the most abundant phyla in the small intestine, and Bacteroidetes were less abundant. In the small intestine, phylum Firmicutes was primarily represented by lactic acid bacteria, including families Streptococcaceae, Lactobacillaceae, and Carnobacteriaceae, and Proteobacteria was represented by families Neisseriaceae, Pasteurellaceae, and Enterobacteriaceae. The duodenal and FD microbial signatures were markedly different from each other, but there were overlaps between duodenal and jejunal and between jejunal and FD microbial signatures. In stool, Firmicutes were represented by families Ruminococcaceae, Lachnospiraceae, Christensenellaceae, and Proteobacteria by class Deltaproteobacteria. CONCLUSIONS: The small bowel microbiome is markedly different from that in stool and also varies between segments. These findings may be important in determining how compositional changes in small intestinal microbiota contribute to human disease states.


Asunto(s)
Bacterias/clasificación , Heces/microbiología , Microbioma Gastrointestinal , Intestino Delgado/microbiología , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Bacterias/genética , Femenino , Humanos , Masculino , Metagenómica , Persona de Mediana Edad , Estudios Prospectivos , Ribotipificación , Adulto Joven
14.
Mycoses ; 63(12): 1283-1298, 2020 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-32918365

RESUMEN

BACKGROUND: The number of patients infected with Aspergillus rose dramatically in recent years. However, studies on the clinical spectrum and antifungal susceptibilities of non-classical (non-fumigatus, non-flavus, non-niger and non-terreus) pathogenic Aspergillus species are very limited. OBJECTIVES: We examined the clinical spectrum and antifungal susceptibilities of 34 non-duplicated, non-classical Aspergillus isolates collected from Hong Kong, Shenzhen and Shanghai. METHODS: The Aspergillus isolates were identified by internal transcribed spacer, partial BenA and partial CaM sequencing and phylogenetic analyses. Susceptibility testing against eight antifungals was performed following the European Committee for Antimicrobial Susceptibility Testing's methodology. RESULTS: The 34 Aspergillus isolates were identified as 14 different rare/cryptic species of four sections (Flavi [n = 8], Nidulantes [n = 8], Nigri [n = 17] and Restricti [n = 1]). Except for one patient whose clinical history could not be retrieved, 72.7% of the remaining patients had underlying conditions predisposing them to Aspergillus infections. The most common diseases were pulmonary infections (n = 15), followed by skin/nail infections (n = 6), chronic otitis externa and/or media (n = 5), wound infections (n = 2) and mastoiditis/radionecrosis (n = 1), while three were colonisations. Five patients succumbed due to the infections during the admission, and another two died 5 years later because of chronic pulmonary aspergillosis. Antifungal susceptibility testing showed that they possessed different susceptibility profiles compared to the classical Aspergillus species. The majority of isolates characterised were sensitive or wild-type to amphotericin B. The minimum effective concentrations for all the three echinocandins were also low. CONCLUSION: Susceptibility testing should be performed for infections due to these rare/cryptic Aspergillus species to guide proper patient management.


Asunto(s)
Antifúngicos/farmacología , Aspergillus/clasificación , Aspergillus/efectos de los fármacos , Pruebas de Sensibilidad Microbiana , Adulto , Anciano , Anciano de 80 o más Años , Antifúngicos/uso terapéutico , Aspergilosis/complicaciones , Aspergilosis/tratamiento farmacológico , Preescolar , China , Femenino , Hong Kong , Humanos , Masculino , Persona de Mediana Edad , Análisis de Secuencia de ADN
15.
Endoscopy ; 51(11): 1035-1043, 2019 11.
Artículo en Inglés | MEDLINE | ID: mdl-30536255

RESUMEN

BACKGROUND: Larger caliber lumen-apposing stents (LAMSs) have been increasingly used in the management of pancreatic fluid collections, specifically when solid debris is present; however, their advantages over smaller caliber plastic stents in the management of pancreatic pseudocysts are unclear. The aim of this study was to investigate the safety and efficacy of LAMS specifically in the management of pancreatic pseudocysts compared with double-pigtail plastic stents (DPPSs). METHODS: We performed a multicenter, international, retrospective study between January 2012 and August 2016. A total of 205 patients with a diagnosis of pancreatic pseudocysts were included, 80 patients received LAMSs and 125 received DPPSs. Measured outcomes included clinical success, technical success, adverse events, stent dysfunction, pancreatic pseudocyst recurrence, and need for surgery. RESULTS: Technical success was similar between the LAMS and the DPPS groups (97.5 % vs. 99.2 %; P = 0.32). Clinical success was higher for LAMSs than for DPPSs (96.3 % vs. 87.2 %; P = 0.03). While the need for surgery was similar between the two groups (1.3 % vs. 4.9 %, respectively; P = 0.17), the use of percutaneous drainage was significantly lower in the LAMS group (1.3 % vs. 8.8 %; P = 0.03). At 6-month follow-up, the recurrence rate was similar between the groups (6.7 % vs 18.8 %, respectively; P = 0.12). The rate of adverse events was significantly higher in the DPPS group (7.5 % vs. 17.6 %; P = 0.04). There was no difference in post-procedure mean length of hospital stay (6.3 days [standard deviation 27.9] vs. 3.7 days [5.7]; P = 0.31). CONCLUSION: When compared to DPPSs, LAMSs are a safe, feasible, and effective modality for the treatment of pancreatic pseudocysts and are associated with a higher rate of clinical success, shorter procedure time, less need for percutaneous interventions, and a lower overall rate of adverse events.


Asunto(s)
Colangiopancreatografia Retrógrada Endoscópica/métodos , Drenaje/métodos , Seudoquiste Pancreático/cirugía , Plásticos , Implantación de Prótesis/métodos , Stents , Endosonografía , Femenino , Humanos , Imagen por Resonancia Magnética , Masculino , Persona de Mediana Edad , Seudoquiste Pancreático/diagnóstico , Diseño de Prótesis , Estudios Retrospectivos , Tomografía Computarizada por Rayos X , Resultado del Tratamiento
16.
Mycoses ; 62(5): 450-457, 2019 May.
Artículo en Inglés | MEDLINE | ID: mdl-30597630

RESUMEN

Although case series of talaromycosis have been reported in China, their detailed clinical and microbiological characteristics have never been systematically profiled. In this study, we report the clinical characteristics, molecular epidemiology, rapid identification and antifungal susceptibilities of talaromycosis in The University of Hong Kong-Shenzhen Hospital in Shenzhen. Seven cases of talaromycosis were observed since commencement of hospital service in 2012. Three patients were local Shenzhen residents, whereas the other four were immigrants from other parts of China. Two patients were HIV-negative, but with underlying diseases requiring immunosuppressive therapy. Two of the seven patients succumbed. All the seven isolates were successfully identified as T. marneffei by MALDI-TOF MS using Bruker database expanded with in-house generated T. marneffei mass spectra. MLST showed that the seven strains belonged to six different, novel sequences types. Phylogenetic analyses of the concatenated five-locus sequence revealed that the seven strains were scattered amongst other T. marneffei strains. The MICs of itraconazole, isavuconazole, posaconazole and voriconazole against the seven clinical isolates were low but MICs of anidulafungin were high. Underlying diseases other than HIV infection are increasingly important risk factors of talaromycosis. MALDI-TOF MS is useful for rapid identification. Highly diverse T. marneffei sequence types were observed.


Asunto(s)
Antifúngicos/farmacología , Técnicas Microbiológicas/métodos , Micosis/epidemiología , Micosis/patología , Talaromyces/aislamiento & purificación , Adulto , Anciano , Femenino , Genotipo , Hong Kong , Hospitales Universitarios , Humanos , Masculino , Persona de Mediana Edad , Epidemiología Molecular , Tipificación de Secuencias Multilocus , Técnicas de Tipificación Micológica , Micosis/diagnóstico , Micosis/microbiología , Estudios Retrospectivos , Factores de Riesgo , Espectrometría de Masa por Láser de Matriz Asistida de Ionización Desorción/métodos , Análisis de Supervivencia , Talaromyces/clasificación , Talaromyces/efectos de los fármacos , Talaromyces/genética
18.
Gastrointest Endosc ; 86(4): 666-672, 2017 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-28257791

RESUMEN

BACKGROUND AND AIMS: Eradication of sporadic nonampullary duodenal adenomas (SNADAs) is essential because of their high rate of malignant transformation. EMR techniques are the alternative to the traditional surgical treatments of SNADAs. There are very limited data on the safety and efficacy of cap-assisted EMR (C-EMR) in the treatment of SNADA. METHODS: The medical records of patients who underwent C-EMR for SNADAs between July 2002 and April 2013 were retrospectively reviewed. Eradication was defined as no residual adenoma on follow-up or en bloc resection on pathology. Recurrence was defined as finding adenoma after a negative follow-up. RESULTS: Fifty-nine C-EMR sessions were performed on 49 SNADAs (flat, 46; sessile, 3); 39 polyps were treated in piecemeal fashion and 10 polyps with en bloc resection. The polyp histology was tubular adenoma (63.3%) and tubulovillous adenoma (36.7%), with 16.3% of lesions showing high-grade dysplasia. Initial eradication rate was 90.5%; residual adenomas were successfully treated with repeat C-EMR/snare, resulting in 100% ultimate eradication rate without any recurrences (median follow-up of 17 months). The overall adverse events rate was 16.9%: intraprocedural bleeding (10.2%), delayed GI bleeding (5.1%), and perforation (1.7%). Among large polyps (≥15 mm), the initial and ultimate eradication rates were 87.9% and 100%, respectively, and the adverse event rate was 17%. Initial eradication rate for small polyps was higher than in large polyps (100% vs 87.9%, respectively; P = .02). CONCLUSION: C-EMR is a highly efficient and safe method for the treatment of SNADAs. We recommend that endoscopists should learn C-EMR on esophageal, gastric, rectal, or left-sided colonic lesions before attempting C-EMR in the duodenum.


Asunto(s)
Adenoma/cirugía , Neoplasias Duodenales/cirugía , Resección Endoscópica de la Mucosa/métodos , Pólipos Intestinales/cirugía , Adenoma/patología , Adenoma Velloso/patología , Adenoma Velloso/cirugía , Adulto , Anciano , Anciano de 80 o más Años , Pérdida de Sangre Quirúrgica , Neoplasias Duodenales/patología , Femenino , Hemorragia Gastrointestinal/epidemiología , Humanos , Perforación Intestinal/epidemiología , Pólipos Intestinales/patología , Masculino , Persona de Mediana Edad , Complicaciones Posoperatorias/epidemiología , Hemorragia Posoperatoria/epidemiología , Estudios Retrospectivos , Resultado del Tratamiento , Carga Tumoral
20.
Dig Dis Sci ; 62(11): 3077-3083, 2017 11.
Artículo en Inglés | MEDLINE | ID: mdl-28815402

RESUMEN

BACKGROUND AND STUDY AIMS: Laparoscopic sleeve gastrectomy (LSG) is gaining popularity in treating morbid obesity. Prior studies showed a 3.5% risk of gastric sleeve stenosis (GSS). There is no consensus on how to treat these patients, and the role of endoscopic therapy has been addressed in only a few studies. We aim to assess the efficacy and safety of endoscopic stenting in the management of GSS following LSG. PATIENTS AND METHODS: Retrospective data were reviewed from July 2009 to November 2013. Patients were referred for endoscopic therapy for symptoms or imaging findings suggestive of gastric leak or narrowing following LSG. Endoscopic therapy included the use of fully covered self-expanding esophageal metal stents (FCSEMS) in addition to over-the-scope clip system (OTSC) when necessary. RESULTS: All 27 patients were females with mean age of 40 years; six patients were excluded from the study. Major symptom was nausea and vomiting in 57% of the patients. Five of 21 patients had concomitant leaks. All 21 patients underwent FCSEMS placement, and four out of five patients (80%) with concomitant leak had OTSC. The success rate in both groups for resolution of stricture and leak was 100%, and no surgical intervention was required. There were no immediate or delayed complications of endoscopic therapy. Median follow-up of 6 months was available for 20/21 patients. Among patients with gastric leak, 80% had resolution of their symptoms compared with 93% of patients with GSS. CONCLUSIONS: Endoscopic therapy for LSG-related GSS or leaks with FCSEMS is highly effective and safe.


Asunto(s)
Endoscopía Gastrointestinal/instrumentación , Gastrectomía/efectos adversos , Laparoscopía/efectos adversos , Complicaciones Posoperatorias/terapia , Stents , Estómago/cirugía , Adulto , Fuga Anastomótica/etiología , Fuga Anastomótica/terapia , Constricción Patológica , Endoscopía Gastrointestinal/efectos adversos , Femenino , Gastrectomía/métodos , Humanos , Masculino , Persona de Mediana Edad , Complicaciones Posoperatorias/diagnóstico por imagen , Complicaciones Posoperatorias/etiología , Diseño de Prótesis , Estudios Retrospectivos , Estómago/diagnóstico por imagen , Resultado del Tratamiento , Adulto Joven
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