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Dive into the research topics where Cristina Renzi is active.

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Featured researches published by Cristina Renzi.


Annals of Surgery | 2006

Efficacy of Nissen Fundoplication Versus Medical Therapy in the Regression of Low-Grade Dysplasia in Patients With Barrett Esophagus: A Prospective Study

Mauro Rossi; Marco Barreca; Nicola de Bortoli; Cristina Renzi; Stefano Santi; Alessandro Gennai; M. Bellini; Francesco Costa; M Conio; Santino Marchi

Objective:The aim of this study is to compare the effect of medical and surgical treatment on the history of patients with Barrett esophagus (BE) and histologic evidence of low-grade dysplasia (LGD). Summary Background Data:BE is a complication of severe gastroesophageal reflux. It is considered a major risk factor for esophageal adenocarcinoma, which may develop through stages from nondysplastic metaplasia to dysplasia (LGD and high-grade dysplasia). Presently, there are no recommended therapeutic guidelines for patients with LGD. Methods:Between 1998 through 2003, 6592 patients underwent upper endoscopy; 327 of 6592 (5%) patients had BE, and 35 of 327 (10.7%) had LGD. Nineteen patients with LGD were treated with high-dose proton pump inhibitors, and 16 patients underwent laparoscopic Nissen fundoplication. Endoscopic and histologic follow-up was available in all patients after 18 months. We used multiple logistic regression to examine the effect of the 2 treatments on regression of LGD. Results:LGD was predominant in men (male-to-female ratio: 1.7:1). Mean age was 58 ± 13.5 years. Sixty percent of patients had no endoscopic evidence of esophagitis. A regression from LGD to BE was observed in 12 of 19 (63.2%) patients in the medical group and in 15 of 16 (93.8%) patients in the surgical group (statistically significant difference). Differences between the 2 groups were statistically significant (P = 0.03). Conclusion:The results of our study suggest that surgical treatment may be more effective than medical therapy to modify the natural history of LGD in patients with BE, perhaps because it not only controls acid but also biliopancreatic reflux into the esophagus.


Surgery for Obesity and Related Diseases | 2016

Is there a role for enhanced recovery after laparoscopic bariatric surgery? Preliminary results from a specialist obesity treatment center

Marco Barreca; Cristina Renzi; James Tankel; Joseph Shalhoub; Neel Sengupta

BACKGROUND There has been a relative lack of research on the effect of enhanced recovery in the context of morbid obesity surgery. OBJECTIVES To determine if the application of enhanced recovery after surgery (ERAS) principles can contribute to reduce postoperative hospital length of stay after bariatric surgery, controlling for other factors that may influence safe discharge on the first postoperative day. SETTING University teaching hospital, United Kingdom. METHODS Between February 2011 and December 2014, prospectively collected data on all patients undergoing laparoscopic bariatric surgery under the care of a single surgeon were reviewed. From January 2012, all patients were enrolled in an ERAS protocol and were assessed for fitness for early discharge (within 24 hr from the operation). Baseline patient characteristics and additional concomitant procedures data were compared for patients treated before and after implementation of the ERAS protocol; 30-day readmission data were analyzed for patients discharged on the first postoperative day and those discharged later. The effect of the implementation of the ERAS protocol on discharge on the first postoperative day was analyzed using multivariate analysis, while taking into account the effects of potential confounders (e.g., age, gender, American Society of Anesthesiologists [ASA] grade, concomitant surgical procedures, etc.). RESULTS Two-hundred and eighty-eight consecutive patients underwent bariatric surgery. Of these, 278 (96.5%) were potentially suitable for early discharge, while 10 (3.5%) patients developed an acute postoperative complication that delayed discharge irrespective of the effect of ERAS. All these patients required a reoperation within 48 hours and therefore were not considered suitable for early discharge and were not included in the statistical analysis. During the entire study period, 100 of 278 (36%) patients were discharged on the first postoperative day, 28.5% after laparoscopic Roux-en-Y gastric bypass (LRYGB) and 60.9% after laparoscopic sleeve gastrectomy (LSG); 178 of 278 (64%) patients were discharged after ≥ 2 days (mean: 2.58, range: 2-5). After implementation of the ERAS protocol in January 2012, the rate of patients discharged on the first postoperative day increased significantly from 1.6% to 39.7% after LRYGB (P<.01). Early discharge increased from 50% to 67.5% after LSG; although this change did not reach statistical significance (P = .294), it nevertheless represents a clinically relevant result. Four (4%) patients were readmitted after having been discharged on the first postoperative day, 10 (5.3%) patients after having been discharged ≥ 2 postoperative days. This difference was not statistically significant (P = .620). CONCLUSIONS The implementation of an enhanced recovery program after bariatric surgery is feasible, well tolerated, and can significantly reduce the length of hospital stay without increasing readmission rates. Controlling for several possible confounders, implementation of the ERAS protocol remained the strongest predictor of discharge on the first postoperative day after laparoscopic bariatric surgery.


World Journal of Surgery | 2003

Expectations and outcomes when moving from open to laparoscopic adrenalectomy: Multivariate analysis

Marco Barreca; Luigi F. Presenti; Cristina Renzi; Giuseppe Cavallaro; Andrea Borrelli; Francesco Stipa; Andrea Valeri

Various authors have suggested that laparoscopic adrenalectomy (LA) leads to better surgical outcomes than open surgery. The debate is still open, however, and indications and limitations of minimally invasive surgery have not been completely established. The objective of our study was to compare surgical outcomes of LA and open adrenalectomy (OA), using multivariate analysis to adjust for potential confounding factors (e.g., size of the lesion, histology). Between 1995 and June 2000 at “Careggi” Hospital in Florence, Italy patients with an indication for adrenalectomy were treated laparoscopically if the lesion was < 10 cm and there was no clinical evidence of malignancy. All 79 patients who underwent LA have been included in this study. Among 152 patients who underwent OA at “La Sapienza” University in Rome, 93 had an adrenal lesion < 10 cm and no clinical evidence of malignancy; they were selected for comparison. Multivariate analysis has been used to analyze the effect of the surgical approach (OA vs. LA) on the surgical outcome, controlling for potential confounders. Multiple logistic regression showed that there is no significant difference in intraoperative outcomes (i.e., surgical time > 2 hours, blood loss ≥ 500 ml) between patients operated on through a traditional approach and those who underwent LA. On the other hand, patients operated on laparoscopically have a significantly higher probability than the OA group of experiencing a better recovery from surgery (i.e., require less postoperative analgesics and return to normal activities earlier). The results of the present study show that, although LA does not add much benefit in terms of expected intraoperative outcomes, it dramatically speeds patients’ recovery from surgery. The two approaches are complementary and should both be integrated into the technical background of all endocrine surgeons.


BMJ Open | 2015

Over-reassurance and undersupport after a ‘false alarm’: a systematic review of the impact on subsequent cancer symptom attribution and help seeking

Cristina Renzi; Katriina L. Whitaker; Jane Wardle

Objectives This literature review examined research into the impact of a previous ‘all-clear’ or non-cancer diagnosis following symptomatic presentation (‘false alarm’) on symptom attribution and delays in help seeking for subsequent possible cancer symptoms. Design and setting The comprehensive literature review included original research based on quantitative, qualitative and mixed data collection methods. We used a combination of search strategies, including in-depth searches of electronic databases (PubMed, EMBASE, PsychInfo), searching key authors and articles listed as ‘related’ in PubMed, and reference lists. We performed a narrative synthesis of key themes shared across studies. Participants The review included studies published after 1990 and before February 2014 reporting information on adult patients having experienced a false alarm following symptomatic presentation. We excluded false alarms in the context of screening. Primary and secondary outcome measures We evaluated the effect of a ‘false alarm’ on symptom attribution and help seeking for new or recurrent possible cancer symptoms. Results Overall, 1442 papers were screened and 121 retrieved for full-text evaluation. Among them, 19 reported on false alarms and subsequent symptom attribution or help seeking. They used qualitative (n=14), quantitative (n=3) and mixed methods (n=2). Breast (n=7), gynaecological (n=3), colorectal (n=2), testicular (n=2), and head and neck cancers (n=2) were the most studied. Two broad themes emerged underlying delays in help seeking: (1) over-reassurance from the previous ‘all-clear’ diagnosis leading to subsequent symptoms being interpreted as benign, and (2) unsupportive healthcare experiences in which symptoms were dismissed, leaving patients concerned about appearing hypochondriacal or uncertain about the appropriate next actions. The evidence suggested that the effect of a false alarm can persist for months and even years. Conclusions In conclusion, over-reassurance and undersupport of patients after a false alarm can undermine help seeking in the case of new or recurrent potential cancer symptoms, highlighting the need for appropriate patient information when investigations rule out cancer.


British Journal of Cancer | 2016

Do colorectal cancer patients diagnosed as an emergency differ from non-emergency patients in their consultation patterns and symptoms? A longitudinal data-linkage study in England

Cristina Renzi; Georgios Lyratzopoulos; Timothy R. Card; Thomas P. C. Chu; Una Macleod; Bernard Rachet

Background:More than 20% of colorectal cancers are diagnosed following an emergency presentation. We aimed to examine pre-diagnostic primary-care consultations and related symptoms comparing patients diagnosed as emergencies with those diagnosed through non-emergency routes.Methods:Cohort study of colorectal cancers diagnosed in England 2005 and 2006 using cancer registration data individually linked to primary-care data (CPRD/GPRD), allowing a detailed analysis of clinical information referring to the 5-year pre-diagnostic period.Results:Emergency diagnosis occurred in 35% and 15% of the 1029 colon and 577 rectal cancers. ‘Background’ primary-care consultations (2–5 years before diagnosis) were similar for either group. In the year before diagnosis, >95% of emergency and non-emergency presenters had consulted their doctor, but emergency presenters had less frequently relevant symptoms (colon cancer: 48% vs 71% (P<0.001); rectal cancer: 49% vs 61% (P=0.043)). ‘Alarm’ symptoms were recorded less frequently in emergency presenters (e.g., rectal bleeding: 9 vs 24% (P=0.002)). However, about 1/5 of emergency presenters (18 and 23% for colon and rectal cancers) had ‘alarm’ symptoms the year before diagnosis.Conclusions:Emergency presenters have similar ‘background’ consultation history as non-emergency presenters. Their tumours seem associated with less typical symptoms, however opportunities for earlier diagnosis might be present in a fifth of them.


BMJ Open | 2016

Survey of public definitions of the term ‘overdiagnosis’ in the UK

Alex Ghanouni; Susanne F. Meisel; Cristina Renzi; Jane Wardle; Jo Waller

Objectives To determine how ‘overdiagnosis’ is currently conceptualised among adults in the UK in light of previous research, which has found that the term is difficult for the public to understand and awareness is low. This study aimed to add to current debates on healthcare in which overdiagnosis is a prominent issue. Design An observational, web-based survey was administered by a survey company. Setting Participants completed the survey at a time and location of their choosing. Participants 390 consenting UK adults aged 50–70 years. Quota sampling was used to achieve approximately equal numbers in three categories of education and equal numbers of men and women. Primary outcome measures Participants were asked whether they had seen or heard the term ‘overdiagnosis’. If they had, they were then invited to explain in a free-text field what they understood it to mean. If they had not previously encountered it, they were invited to say what they thought it meant. Responses were coded and interpreted using content analysis and descriptive statistics. Results Data from 390 participants were analysed. Almost a third (30.0%) of participants reported having previously encountered the term. However, their responses often indicated that they had no knowledge of its meaning. The most prevalent theme consisted of responses related to the diagnosis itself. Subthemes indicated common misconceptions, including an ‘overly negative or complicated diagnosis’, ‘false-positive diagnosis’ or ‘misdiagnosis’. Other recurring themes consisted of responses related to testing (ie, ‘too many tests’), treatment (eg, ‘overtreatment’) and patient psychology (eg, ‘overthinking’). Responses categorised as consistent with ‘overdiagnosis’ (defined as detection of a disease that would not cause symptoms or death) were notably rare (n=10; 2.6%). Conclusions Consistent with previous research, public awareness of ‘overdiagnosis’ in the UK is low and its meaning is often misunderstood or misinterpreted.


British Journal of General Practice | 2016

Unintended consequences of an 'all-clear' diagnosis for potential cancer symptoms: a nested qualitative interview study with primary care patients.

Cristina Renzi; Katriina L. Whitaker; Kelly Winstanley; Susanne Cromme; Jane Wardle

Background Nine out of 10 patients undergoing urgent cancer investigations receive an ‘all-clear’ diagnosis. Aim A qualitative approach was used to evaluate the impact of investigations that did not result in cancer diagnosis on subsequent symptom attribution and help seeking for recurrent or new possible cancer symptoms. Design and setting A survey of symptoms, help seeking, and past investigations was sent to 4913 individuals aged ≥50 years from four UK general practices. Of 2042 responders, 62 participants were recruited still reporting at least one cancer ‘alarm’ symptom in a 3-month follow-up survey for a nested in-depth interview study (ensuring variation in sociodemographic characteristics). Method Framework analysis was used to examine the in-depth semi-structured interviews and identify themes related to previous health investigations. Results Interviewees were on average 65 years old, and 90% reported investigations within the previous 2 years. Most often they reported gastrointestinal, urinary, and respiratory symptoms, and 42% had waited ≥3 months before help seeking. Reassurance from a previous non-cancer diagnosis explained delays in help seeking even if symptoms persisted or new symptoms developed months or years later. Others were worried about appearing hypochondriacal or that they would not be taken seriously if they returned to the doctor. Conclusion An all-clear diagnosis can influence help seeking for months or even years in case of new or recurrent alarm symptoms. Considering the increasing number of people undergoing investigations and receiving an all-clear, it is paramount to limit unintended consequences by providing appropriate information and support. Specific issues are identified that could be addressed.


Preventive medicine reports | 2016

Common methods of measuring ‘informed choice’ in screening participation: Challenges and future directions

Alex Ghanouni; Cristina Renzi; Susanne F. Meisel; Jo Waller

There is general agreement among public health practitioners, academics, and policymakers that people offered health screening tests should be able to make informed choices about whether to accept. Robust measures are necessary in order to gauge the extent to which informed choice is achieved in practice and whether efforts to improve it have succeeded. This review aims to add to the literature on how to improve methods of measuring informed choice. We discuss and critique commonly-used approaches and outline possible alternative methods that might address the issues identified. We explore the challenges of defining what information should be provided about screening and hence understood by service users, appraise the use of ‘thresholds’ to define e.g. positive attitudes towards screening, and describe problems inherent in conceptualising ‘informed choice’ as a single dichotomous outcome that either does or does not occur. Suggestions for future research include providing greater detail on why particular aspects of screening information were considered important, analysing knowledge and attitude measures at an ordinal or continuous level (avoiding problematic decisions about dichotomising data in order to set thresholds), and reconceptualising informed choice as a multifactorial set of outcomes, rather than a unitary one.


PLOS ONE | 2016

Information on 'Overdiagnosis' in Breast Cancer Screening on Prominent United Kingdom- and Australia-Oriented Health Websites.

Alex Ghanouni; Susanne F. Meisel; Jolyn Hersch; Jo Waller; Jane Wardle; Cristina Renzi

Objectives Health-related websites are an important source of information for the public. Increasing public awareness of overdiagnosis and ductal carcinoma in situ (DCIS) in breast cancer screening may facilitate more informed decision-making. This study assessed the extent to which such information was included on prominent health websites oriented towards the general public, and evaluated how it was explained. Design Cross-sectional study. Setting Websites identified through Google searches in England (United Kingdom) and New South Wales (Australia) for “breast cancer screening” and further websites included based on our prior knowledge of relevant organisations. Main Outcomes Content analysis was used to determine whether information on overdiagnosis or DCIS existed on each site, how the concepts were described, and what statistics were used to quantify overdiagnosis. Results After exclusions, ten UK websites and eight Australian websites were considered relevant and evaluated. They originated from charities, health service providers, government agencies, and an independent health organisation. Most contained some information on overdiagnosis (and/or DCIS). Descriptive information was similar across websites. Among UK websites, statistical information was often based on estimates from the Independent UK Panel on Breast Cancer Screening; the most commonly provided statistic was the ratio of breast cancer deaths prevented to overdiagnosed cases (1:3). A range of other statistics was included, such as the yearly number of overdiagnosed cases and the proportion of women screened who would be overdiagnosed. Information on DCIS and statistical information was less common on the Australian websites. Conclusions Online information about overdiagnosis has become more widely available in 2015–16 compared with the limited accessibility indicated by older research. However, there may be scope to offer more information on DCIS and overdiagnosis statistics on Australian websites. Moreover, the variability in how estimates are presented across UK websites may be confusing for the general public.


Frontline Gastroenterology | 2018

Associations between diagnostic pathways and care experience in colorectal cancer: evidence from patient-reported data

Theodosia Salika; Gary A. Abel; Silvia C Mendonca; Christian von Wagner; Cristina Renzi; Annie Herbert; Sean McPhail; Georgios Lyratzopoulos

Objective To examine how different pathways to diagnosis of colorectal cancer may be associated with the experience of subsequent care. Design Patient survey linked to information on diagnostic route. English patients with colorectal cancer (analysis sample n=6837) who responded to a patient survey soon after their hospital treatment. Main outcome measures Odds Ratios and adjusted proportions of negative evaluation of key aspects of care for colorectal cancer, including the experience of shared decision-making about treatment, specialist nursing and care coordination, by diagnostic route (ie, screening detection, emergency presentation, urgent and elective general practitioner referral). Results For 14 of 18 questions, there was evidence (p≤0.02) for variation in patient experience by diagnostic route, with 6–31 percentage point differences between routes in adjusted proportions of negative experience. Emergency presenters were more likely to report a negative experience for most questions, including those about adequacy of information about their diagnosis and sufficient explanation before operations. Screen-detected patients were least likely to report negative experiences except for support from primary care. Patients diagnosed through elective primary care referrals were most likely to report worse experience for questions for which overall variation by route was generally small. Conclusions Screening-detected patients tend to report the best and emergency presenters the worst experience of subsequent care. Improvement efforts can target care integration for screening-detected patients and provision of information about the diagnosis and treatment of emergency presenters.

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Jane Wardle

University College London

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Jo Waller

University College London

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Alex Ghanouni

University College London

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