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  1. Article ; Online: Expert Commentary on the Evaluation and Management of Hemorrhoids.

    Orangio, Guy R

    Diseases of the colon and rectum

    2020  Volume 63, Issue 4, Page(s) 424–426

    MeSH term(s) Hemorrhoids ; Humans ; Ligation
    Language English
    Publishing date 2020-03-04
    Publishing country United States
    Document type Journal Article ; Comment
    ZDB-ID 212581-x
    ISSN 1530-0358 ; 0012-3706
    ISSN (online) 1530-0358
    ISSN 0012-3706
    DOI 10.1097/DCR.0000000000001643
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: A National Accreditation Program for Rectal Cancer: A Long and Winding Road.

    Orangio, Guy R

    Diseases of the colon and rectum

    2018  Volume 61, Issue 2, Page(s) 145–146

    MeSH term(s) Accreditation ; Humans ; Rectal Neoplasms
    Language English
    Publishing date 2018
    Publishing country United States
    Document type Journal Article ; Comment
    ZDB-ID 212581-x
    ISSN 1530-0358 ; 0012-3706
    ISSN (online) 1530-0358
    ISSN 0012-3706
    DOI 10.1097/DCR.0000000000001011
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: The Economics of Colon Cancer.

    Orangio, Guy R

    Surgical oncology clinics of North America

    2017  Volume 27, Issue 2, Page(s) 327–347

    Abstract: The economic burden of cancer on the national health expenditure is billions of dollars. The economic cost is measured on direct and indirect medical costs, which vary depending on stage at diagnosis, patient age, type of medical services, and site of ... ...

    Abstract The economic burden of cancer on the national health expenditure is billions of dollars. The economic cost is measured on direct and indirect medical costs, which vary depending on stage at diagnosis, patient age, type of medical services, and site of service. Costs vary by region, physician behavior, and patient preferences. When analyzing the economic burden of survivors of colon cancer, we cannot forget the societal burden. Post-acute care and readmissions are major economic burdens. People with colon cancer have to be followed for their lifetime. Economic models are being studied to give cost-effective solutions to this problem.
    MeSH term(s) Colonic Neoplasms/diagnosis ; Colonic Neoplasms/economics ; Colonic Neoplasms/therapy ; Health Expenditures ; Humans ; Quality of Life ; Survivors
    Language English
    Publishing date 2017-12-13
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 1196919-2
    ISSN 1558-5042 ; 1055-3207
    ISSN (online) 1558-5042
    ISSN 1055-3207
    DOI 10.1016/j.soc.2017.11.007
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: Basic Science, Epidemiology, and Screening for Anal Intraepithelial Neoplasia and Its Relationship to Anal Squamous Cell Cancer.

    Davis, Kurt G / Orangio, Guy R

    Clinics in colon and rectal surgery

    2018  Volume 31, Issue 6, Page(s) 368–378

    Abstract: Despite the progress made in the reduction of squamous cell carcinoma of the cervix, the incidence of anal squamous cell carcinoma (ASCC) has been increasing since 1992. While it remains an uncommon disease, the prevalence is climbing steadily. Among ... ...

    Abstract Despite the progress made in the reduction of squamous cell carcinoma of the cervix, the incidence of anal squamous cell carcinoma (ASCC) has been increasing since 1992. While it remains an uncommon disease, the prevalence is climbing steadily. Among human immunodeficiency virus (HIV)-infected adults, especially men who have sex with men, ASCC is one of the more common non-AIDS-defining malignancies. The precursor lesion, anal intraepithelial neoplasia (AIN), is prevalent in the HIV-infected population. More than 90% of ASCCs are related to human papilloma virus (HPV), oncogenic types (HPV 16, 18). While the biology of HPV-related intraepithelial neoplasia is consistent in the anogenital area, the natural history of AIN is poorly understood and is not identical to cervical intraepithelial neoplasia (CIN). CIN is also considered an AIDS-defining malignancy, and the methods for screening and prevention of AIN are derived from the CIN literature. This article will discuss the epidemiology of ASCC and its association with HPV and the life cycle of the HPV, and the molecular changes that lead to clearance, productive infection, latency, and persistence. The immunology of HPV infection will discuss natural immunity, humoral and cellular immunity, and how the HPV virus evades and interferes with these mechanisms. We will also discuss high-risk factors for developing AIN in high-risk patient populations with relation to infections (HIV, HPV, and chlamydia infections), prolonged immunocompromised people, and sexual behavior and tobacco abuse. We will also discuss the pre- and post-HAART era and its effect on AINs and ASCC. Finally, we will discuss the importance of anal cytology and high-resolution anoscopy with and without biopsy in this high-risk population.
    Language English
    Publishing date 2018-11-02
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 2048635-2
    ISSN 1531-0043
    ISSN 1531-0043
    DOI 10.1055/s-0038-1668107
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Enterocutaneous fistula: medical and surgical management including patients with Crohn's disease.

    Orangio, Guy R

    Clinics in colon and rectal surgery

    2011  Volume 23, Issue 3, Page(s) 169–175

    Abstract: Patients with inflammatory bowel disease (IBD) and especially Crohn's disease can be challenging for even the most seasoned of surgeons. Development of an enterocutaneous fistula (ECF) in these patients further adds a level of complexity that requires a ... ...

    Abstract Patients with inflammatory bowel disease (IBD) and especially Crohn's disease can be challenging for even the most seasoned of surgeons. Development of an enterocutaneous fistula (ECF) in these patients further adds a level of complexity that requires a well-planned and defined management strategy. The role of the surgeon in caring for these patients should be as the leader of a multidisciplinary team, directing the care of the other specialists, all while determining if, and when, the patient requires operative intervention. Although medical management has come a long way in these and similar patients, surgery is still needed in a vast majority of patients. Therefore, understanding the evaluation, initial management, and important technical considerations for care of IBD and other complex patients with ECFs is a difficult, yet much needed, task for which the surgeon should be prepared.
    Language English
    Publishing date 2011-08-23
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2048635-2
    ISSN 1530-9681 ; 1531-0043
    ISSN (online) 1530-9681
    ISSN 1531-0043
    DOI 10.1055/s-0030-1262984
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Trends in Open, Laparoscopic, and Robotic Approaches to Colorectal Operations.

    Hajirawala, Luv N / Leonardi, Claudia / Orangio, Guy R / Davis, Kurt G / Barton, Jeffrey S

    The American surgeon

    2021  Volume 89, Issue 5, Page(s) 2129–2131

    Abstract: The use of robotic approach has gained momentum in colorectal surgery. We analyzed the trends in the adoption of robotic-assisted platform (RAP) for colorectal surgery over a 6-year period (2013-2018) using the American College of Surgeons National ... ...

    Abstract The use of robotic approach has gained momentum in colorectal surgery. We analyzed the trends in the adoption of robotic-assisted platform (RAP) for colorectal surgery over a 6-year period (2013-2018) using the American College of Surgeons National Surgical Quality Improvement Project. We assessed yearly prevalence of robotic, laparoscopic, and open approaches, and evaluated trends in the adoption of RAP across age, gender, BMI, and American Society of Anesthesiology (ASA) subgroups. Overall, the frequency of open, laparoscopic, and robotic approach was 36%, 46.8%, and 7.8%, respectively. While the use of laparoscopic cases remained stable over the study period, the prevalence of RAP increased from 2.8% to 11.4%. This was accompanied by a concomitant decline in the use of open approach, from 40.8% to 33%. The use of RAP also increased across all age, gender, BMI, and ASA subgroups. Robotic-assisted platform is increasingly utilized for higher risk, older, and obese patients, allowing more patients to receive minimally invasive colorectal surgery.
    MeSH term(s) Humans ; Robotic Surgical Procedures/adverse effects ; Colorectal Surgery ; Digestive System Surgical Procedures ; Laparoscopy/adverse effects ; Colorectal Neoplasms/surgery ; Retrospective Studies
    Language English
    Publishing date 2021-07-28
    Publishing country United States
    Document type Journal Article
    ZDB-ID 202465-2
    ISSN 1555-9823 ; 0003-1348
    ISSN (online) 1555-9823
    ISSN 0003-1348
    DOI 10.1177/00031348211034754
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Failure of nonoperative management in patients with acute diverticulitis complicated by abscess: a systematic review.

    Fowler, Hayley / Gachabayov, Mahir / Vimalachandran, Dale / Clifford, Rachael / Orangio, Guy R / Bergamaschi, Roberto

    International journal of colorectal disease

    2021  Volume 36, Issue 7, Page(s) 1367–1383

    Abstract: Background: The aim of this study was to assess failure rates following nonoperative management of acute diverticulitis complicated by abscess and trends thereof.: Method: Pubmed, MEDLINE, EMBASE, CINAHL, Cochrane Library, and Web of Science were ... ...

    Abstract Background: The aim of this study was to assess failure rates following nonoperative management of acute diverticulitis complicated by abscess and trends thereof.
    Method: Pubmed, MEDLINE, EMBASE, CINAHL, Cochrane Library, and Web of Science were systematically searched. Nonoperative management was defined as a combination of nil per os, IV fluids, IV antibiotics, CT scan-guided percutaneous drainage, and total parenteral nutrition. The primary endpoint was failure of nonoperative management defined as persistent or worsening abscess and/or sepsis, development of new complications, such as peritonitis, ileus, or colocutaneous fistula, and urgent surgery within 30-90 days of index admission. Data were stratified by three arbitrary time intervals: 1986-2000, 2000-2010, and after 2010. The primary outcome was calculated for those groups and compared.
    Results: Thirty-eight of forty-four eligible studies published between 1986 and 2019 were included in the quantitative synthesis of data (n = 2598). The pooled rate of failed nonoperative management was 16.4% (12.6%, 20.2%) at 90 days. In studies published in 2000-2010 (n = 405), the pooled failure rate was 18.6% (10.5%, 26.7%). After 2000 (n = 2140), the pooled failure rate was 15.3% (10.7%, 20%). The difference was not statistically significant (p = 0.725). After controlling for heterogeneity in the definition of failure of nonoperative management, subgroup analysis yielded the pooled rate of failure of 21.8% (16.1%, 27.4%).
    Conclusion: This meta-analysis found that failure rates following nonoperative management of acute diverticulitis complicated by abscess did not significantly decrease over the past three decades. The general quality of published data and the level and certainty of evidence produced were low.
    MeSH term(s) Abscess/therapy ; Diverticulitis ; Diverticulitis, Colonic ; Drainage ; Humans ; Peritonitis
    Language English
    Publishing date 2021-03-07
    Publishing country Germany
    Document type Journal Article ; Meta-Analysis ; Review ; Systematic Review
    ZDB-ID 84975-3
    ISSN 1432-1262 ; 0179-1958
    ISSN (online) 1432-1262
    ISSN 0179-1958
    DOI 10.1007/s00384-021-03899-6
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article: Basic Science, Epidemiology, and Screening for Anal Intraepithelial Neoplasia and Its Relationship to Anal Squamous Cell Cancer

    Davis, Kurt G. / Orangio, Guy R.

    Clinics in Colon and Rectal Surgery

    (Anal Intraepithelial Neoplasia and Squamous Cell Cancer of the Anus)

    2018  Volume 31, Issue 06, Page(s) 368–378

    Abstract: Despite the progress made in the reduction of squamous cell carcinoma of the cervix, the incidence of anal squamous cell carcinoma (ASCC) has been increasing since 1992. While it remains an uncommon disease, the prevalence is climbing steadily. Among ... ...

    Series title Anal Intraepithelial Neoplasia and Squamous Cell Cancer of the Anus
    Abstract Despite the progress made in the reduction of squamous cell carcinoma of the cervix, the incidence of anal squamous cell carcinoma (ASCC) has been increasing since 1992. While it remains an uncommon disease, the prevalence is climbing steadily. Among human immunodeficiency virus (HIV)-infected adults, especially men who have sex with men, ASCC is one of the more common non-AIDS-defining malignancies. The precursor lesion, anal intraepithelial neoplasia (AIN), is prevalent in the HIV-infected population. More than 90% of ASCCs are related to human papilloma virus (HPV), oncogenic types (HPV 16, 18). While the biology of HPV-related intraepithelial neoplasia is consistent in the anogenital area, the natural history of AIN is poorly understood and is not identical to cervical intraepithelial neoplasia (CIN). CIN is also considered an AIDS-defining malignancy, and the methods for screening and prevention of AIN are derived from the CIN literature. This article will discuss the epidemiology of ASCC and its association with HPV and the life cycle of the HPV, and the molecular changes that lead to clearance, productive infection, latency, and persistence. The immunology of HPV infection will discuss natural immunity, humoral and cellular immunity, and how the HPV virus evades and interferes with these mechanisms. We will also discuss high-risk factors for developing AIN in high-risk patient populations with relation to infections (HIV, HPV, and chlamydia infections), prolonged immunocompromised people, and sexual behavior and tobacco abuse. We will also discuss the pre- and post-HAART era and its effect on AINs and ASCC. Finally, we will discuss the importance of anal cytology and high-resolution anoscopy with and without biopsy in this high-risk population.
    Keywords non–AIDS-defining malignancy ; anal intraepithelial neoplasia ; human papilloma virus ; anal cytology ; high-resolution anoscopy
    Language English
    Publishing date 2018-11-01
    Publisher Thieme Medical Publishers
    Publishing place Stuttgart ; New York
    Document type Article
    ZDB-ID 2048635-2
    ISSN 1530-9681 ; 1531-0043
    ISSN (online) 1530-9681
    ISSN 1531-0043
    DOI 10.1055/s-0038-1668107
    Database Thieme publisher's database

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  9. Article ; Online: Minimally Invasive Surgery is Associated with Improved Outcomes Following Urgent Inpatient Colectomy.

    Hajirawala, Luv N / Krishnan, Varun / Leonardi, Claudia / Bevier-Rawls, Elyse R / Orangio, Guy R / Davis, Kurt G / Klinger, Aaron L / Barton, Jeffrey S

    JSLS : Journal of the Society of Laparoendoscopic Surgeons

    2022  Volume 26, Issue 1

    Abstract: Objectives: The use of minimally invasive techniques for urgent colectomies remains understudied. This study compares short-term outcomes following urgent minimally invasive colectomies to those following open colectomies.: Methods & procedures: The ... ...

    Abstract Objectives: The use of minimally invasive techniques for urgent colectomies remains understudied. This study compares short-term outcomes following urgent minimally invasive colectomies to those following open colectomies.
    Methods & procedures: The American College of Surgeons National Surgical Quality Improvement Program (ACS NSQIP) colectomy database was queried between January 1, 2013 and December 31, 2018. Patients who underwent elective and emergency colectomies, based on the respective NSQIP variables, were excluded. The remaining patients were divided into two groups, minimally invasive surgery (MIS) and open. MIS colectomies with unplanned conversion to open were included in the MIS group. Baseline characteristics and 30-day outcomes were compared using univariable and multivariable regression analyses.
    Results: A total of 29,345 patients were included in the study; 12,721 (43.3%) underwent MIS colectomy, while 16,624 (56.7%) underwent open colectomy. Patients undergoing MIS colectomy were younger (60.6 vs 63.8 years) and had a lower prevalence of either American Society of Anesthesiology (ASA) IV (9.9 vs 15.5%) or ASA V (0.08% vs 2%). After multivariable analysis, MIS colectomy was associated with lower odds of mortality (odds ratio = 0.75, 95% confidence interval: 0.61, 0.91 95% confidence interval), and most short-term complications recorded in the ACS NSQIP. While MIS colectomies took longer to perform (161 vs 140 min), the length of stay was shorter (12.2 vs 14.1 days).
    Conclusions: MIS colectomy affords better short-term complication rates and a reduced length of stay compared to open colectomy for patients requiring urgent surgery. If feasible, minimally invasive colectomy should be offered to patients necessitating urgent colon resection.
    MeSH term(s) Colectomy/methods ; Humans ; Inpatients ; Laparoscopy/methods ; Minimally Invasive Surgical Procedures ; Postoperative Complications/epidemiology ; Postoperative Complications/etiology ; United States/epidemiology
    Language English
    Publishing date 2022-02-23
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2011211-7
    ISSN 1938-3797 ; 1086-8089
    ISSN (online) 1938-3797
    ISSN 1086-8089
    DOI 10.4293/JSLS.2021.00075
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Multiple High-Risk Features for Stage II Colon Carcinoma Portends Worse Survival Than Stage III Disease.

    Hajirawala, Luv N / Yi, Yong / Herritt, Brian C / Laurent, Morgan E / Klinger, Aaron L / Orangio, Guy R / Davis, Kurt G / Barton, Jeffrey S

    Diseases of the colon and rectum

    2022  Volume 66, Issue 8, Page(s) 1076–1084

    Abstract: Background: High-risk features in stage II colon cancer worsen survival and serve as an impetus for adjuvant chemotherapy. Limited data exist on the effect of multiple high-risk features on survival.: Objective: The study aimed to compare the ... ...

    Abstract Background: High-risk features in stage II colon cancer worsen survival and serve as an impetus for adjuvant chemotherapy. Limited data exist on the effect of multiple high-risk features on survival.
    Objective: The study aimed to compare the survival of 0, 1, or multiple high-risk features in stage II to stage III colon cancer.
    Design: Patients with stage II and III colon cancer diagnosed between 2010 and 2016 were identified using the Survival, Epidemiology, and End Results database. Patients with stage II colon cancer were then classified according to the presence of 0, 1, or 2 or more of the following high-risk features: pathologic T4, perineural invasion, fewer than 12 lymph nodes assessed, or poor histologic differentiation. Overall survival and cause-specific survival were calculated. Each group was then stratified on the basis of whether chemotherapy was given.
    Settings: This study used the Survival, Epidemiology, and End Results database (2010-2016).
    Patients: Patients who had stage II or III colon cancer were included.
    Main outcome measures: The primary outcome measures were 5-year overall survival and cause-specific survival.
    Results: A total of 65,831 patients were studied. Of these, 18,056 patients with stage II cancer had 0 high-risk features, 9426 had 1 high-risk feature, and 3503 had 2 or more high-risk features. There were 34,842 patients diagnosed with stage III disease. The 5-year overall survival and cause-specific survival for patients with stage II cancer with 2 or more high-risk features (49.2%, 59.5%) were lower than those without high-risk features (74.9%, 90.7%), with 1 high-risk feature (67.1%, 82.4%), or stage III disease (59.1%, 68.1%; p < 0.05). Although chemotherapy is associated with improved cause-specific survival in stage III disease, it is associated with worse cause-specific survival in patients with stage II disease.
    Limitations: This study being a retrospective database analysis is the main limitation. Also, lymphovascular invasion, margin status, and clinical obstruction or perforation were absent from the dataset.
    Conclusions: Multiple high-risk features in stage II colon cancer predict worse survival than lymph node metastasis. Chemotherapy is associated with adverse cause-specific survival in patients with stage II disease. Further study into this group should focus on the type and duration of adjuvant therapy and biological features of these tumors. See Video Abstract at http://links.lww.com/DCR/B929 .
    Mltiples caractersticas de alto riesgo para el carcinoma de colon en estadio ii presagian peor supervivencia que la enfermedad en estadio iii: ANTECEDENTES:Las características de alto riesgo en el cáncer de colon en estadio II empeoran la supervivencia y sirven como impulso para la quimioterapia adyuvante. Existen datos limitados sobre el efecto de múltiples características de alto riesgo en la supervivencia.OBJETIVO:Comparar la supervivencia de cero, una o múltiples características de alto riesgo en el cáncer de colon en estadio II con la enfermedad en estadio III.DISEÑO:Los pacientes con cáncer de colon en estadio II y III diagnosticados entre 2010 y 2016 se identificaron mediante la base de datos de supervivencia, epidemiología y resultados finales. Luego, los pacientes en etapa II se clasificaron según la presencia de cero, 1 o 2+ de las siguientes características de alto riesgo: T4 patológico, invasión perineural, menos de 12 ganglios linfáticos evaluados (< 12 ganglios linfáticos) o mala diferenciación histológica. Se calculó la supervivencia observada y específica de la causa. Luego, cada grupo se estratificó en función de si se administró quimioterapia.ESCENARIO:Este estudio utilizó la base de datos de supervivencia, epidemiología y resultados finales, 2010-2016.PACIENTES:Los pacientes tenían cáncer de colon en estadio II o III.PRINCIPALES MEDIDAS DE RESULTADO:La medida principal fue la supervivencia observada a 5 años y la supervivencia por causa específica.RESULTADOS:Se estudiaron un total de 65,831 pacientes. 18,056 pacientes estaban en estadio II sin características de alto riesgo, 9.426 con 1 característica de alto riesgo y 3.503 con 2+ características de alto riesgo. Hubo 34.842 pacientes a los que se les diagnosticó enfermedad en estadio III. La supervivencia observada a los 5 años y la supervivencia específica de la causa para los pacientes con cáncer en estadio II con 2+ características de alto riesgo (49.2 %, 59.5 %) fueron más bajas, en comparación con aquellos sin características de alto riesgo (74.9 %, 90.7 %), con 1 característica de alto riesgo (67.1 %, 82.4 %) o enfermedad en estadio III (59.1 %, 68.1 %) (p < 0.05). Si bien la quimioterapia se asocia con una mejor supervivencia por causa específica en la enfermedad en estadio III, se asocia con una peor supervivencia por causa específica en pacientes con enfermedad en estadio II.LIMITACIONES:Este es un análisis de base de datos retrospectivo. La invasión linfovascular, el estado de los márgenes y la obstrucción o perforación clínicas estaban ausentes en la base de datos.CONCLUSIONES:Múltiples características de alto riesgo en el cáncer de colon en estadio II predicen una peor supervivencia que la metástasis en los ganglios linfáticos. La quimioterapia se asocia con una supervivencia específica de causa adversa en pacientes con enfermedad en estadio II. El estudio adicional de este grupo deberá centrarse en el tipo y la duración de la terapia adyuvante y las características biológicas de estos tumores. Consulte Video Resumen en http://links.lww.com/DCR/B929 . (Traducción-Dr. Jorge Silva Velazco ).
    MeSH term(s) Humans ; Retrospective Studies ; Prognosis ; Neoplasm Staging ; Colonic Neoplasms/therapy ; Colonic Neoplasms/pathology ; Rectal Neoplasms/pathology ; Carcinoma/pathology
    Language English
    Publishing date 2022-02-28
    Publishing country United States
    Document type Video-Audio Media ; Journal Article
    ZDB-ID 212581-x
    ISSN 1530-0358 ; 0012-3706
    ISSN (online) 1530-0358
    ISSN 0012-3706
    DOI 10.1097/DCR.0000000000002425
    Database MEDical Literature Analysis and Retrieval System OnLINE

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