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Introducción. La transposición de los órganos debido al situs inversus (SI) es una rara afección que dificulta el diagnóstico de la apendicitis aguda. Esta condición hace que la sintomatología del paciente y los hallazgos al examen físico puedan ser atípicos, lo que demanda el uso de imágenes para la confirmación diagnóstica en la mayoría de los casos. Métodos. Se describieron tres casos de apendicitis en pacientes con diagnóstico de situs inversus. Dos de ellos tenían el antecedente conocido, mientras el tercer caso fue diagnosticado de forma intraoperatoria. Resultados. En dos pacientes se decidió llevar a cirugía vía laparoscópica sin imágenes diagnósticas adicionales. Los pacientes evolucionaron de manera satisfactoria. Conclusión. Siempre se debe considerar la apendicitis dentro de los diagnósticos diferenciales en los pacientes con dolor en fosa ilíaca izquierda. Es fundamental diagnosticar y tratar la apendicitis de manera efectiva para minimizar las complicaciones asociadas. La importancia de la anamnesis y la sospecha clínica del examinador son vitales en estos casos, que se pueden confirmar con las imágenes diagnósticas. Pueden existir casos en donde la condición clínica del paciente no permita la realización de estudios diagnósticos por imágenes; esto apoya cada vez más el uso del abordaje laparoscópico. Se recomienda considerar el abordaje laparoscópico en primera instancia, ya que nos permite la confirmación diagnóstica de situs inversus totalis en caso de que el antecedente sea desconocido y facilita el manejo oportuno de la urgencia.

Introduction. Organ transposition due to situs inversus (SI) is a rare condition that makes the diagnosis of acute appendicitis difficult. This condition entails that the patient' symptoms and physical examination findings may be atypical, which requires the use of images for diagnostic confirmation in most cases. Clinical cases. Three cases of appendicitis in patients diagnosed with situs inversus are described. Two of them had a known medical history, while the third case was diagnosed intraoperatively. Results. In two patients it was decided to undergo laparoscopic surgery without additional diagnostic images. The patients progressed satisfactorily. Conclusion. Appendicitis should always be considered in the differential diagnoses in patients with pain in the left iliac fossa. It is essential to diagnose and treat appendicitis effectively to minimize associated complications. The importance of the anamnesis and the examiner's clinical suspicion are vital in these cases, which can be confirmed with diagnostic images. There may be cases where the patient's clinical condition does not allow diagnostic imaging studies to be performed, increasingly supports the use of the laparoscopic approach. It is recommended to consider the laparoscopic approach in the first instance, since it allows us to confirm the diagnosis of situs inversus totalisin case the history is unknown and facilitates timely management of the emergency.

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OBJECTIVE: To determine the relationship between appendectomy and cognitive impairment in adults aged 50-70 years. MATERIAL AND METHODS: A case-control study was carried out with 270 patients between May and July 2023. Ninety cases (with cognitive impairment) and 180 controls (without impairment), diagnosed by the Montreal Cognitive Assessment (MoCA), were assessed. RESULTS: 31.11% of the total cases with cognitive impairment were submitted to an appendectomy, with an average of 25 years since surgery. Regarding other surgeries: 40% with impairment underwent cholecystectomy and 23.33% reported other operations. The analysis revealed significant differences in age, body mass index, hypertension, diabetes and smoking between the groups. However, there was no significant difference by gender. Logistic regression analysis highlighted that age and past appendectomy were strongly associated with cognitive impairment, with an Odds Ratio (OR) of 1.20 and 12.91, respectively. Associations were also found with cholecystectomy (OR 7.33), other surgeries (OR 13.39) and smoking (OR 6.91). CONCLUSION: Appendectomy might be a significant risk factor for cognitive impairment in adults aged 50-70 years.

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Introducción: La colitis ulcerosa (CU) es una enfermedad inflamatoria intestinal que afecta el colon y el recto de etiología desconocida. Se ha planteado la apendicectomía electiva en pacientes con colitis ulcerosa refractaria como una alternativa de tratamiento. Objetivo: Comunicar el caso clínico de una paciente con CU refractaria a quien la apendicectomía electiva permitió una mejoría de su sintomatología y calidad de vida. Resultados: Se presenta el caso de una paciente de 46 años con antecedentes de hipotiroidismo y colitis ulcerosa de 2 años de evolución, con rectorragia, dolor abdominal y diarrea importante pese a la terapia biológica. Se decide apendicectomía laparoscópica electiva, logrando una mejoría sintomática de la paciente objetivada mediante la aplicación de la encuesta "Inflammatory Bowel Disease Questionnaire". El puntaje preoperatorio de la paciente fue de 60 puntos, y el postoperatorio de 176. Discusión: Se hace evidente que la colitis ulcerosa y el apéndice cecal están íntimamente relacionados. Los desafíos futuros deberían apuntarse a identificar las características clínicas que precisen qué pacientes se benefician de esta intervención.

Introduction: Ulcerative colitis (UC) is an inflammatory bowel disease that affects the colon and rectum of unknown etiology. Elective appendectomy has been proposed as a possible treatment for patients with refractory ulcerative colitis. Objective: To report the clinical case of a patient with refractory UC who showed improvement in symptomatology and quality of life after undergoing elective appendectomy. Results: We present the case of a 46-year-old patient with a 2-year history of hypothyroidism and ulcerative colitis, with rectal bleeding, abdominal pain, and significant diarrhea despite biological therapy. Elective laparoscopic appendectomy was performed, resulting in symptomatic improvement of the patient as measured by the Inflammatory Bowel Disease Questionnaire. The patient's preoperative score was 60 points, and the postoperative score was 176. Discussion: It seems evident that ulcerative colitis and the cecal appendix are intimately related. Future challenges should aim to identify clinical characteristics that determine which patients benefit from this intervention.

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Objetivo: Reportar los hallazgos anatomopatológicos de las apendicectomías profilácticas en el Hospital Clínico de la Fuerza Aérea de Chile (FACh) y compararlos con los estudios reportados en la literatura. Material y Método: Análisis retrospectivo, descriptivo de los pacientes sometidos a apendicectomía laparoscópica profiláctica entre los años 2013 y 2017 en el Hospital FACh, y sus resultados anatomopatológicos de la pieza operatoria, según registro clínico y reportes de laboratorio patológico. Resultados: Se rescataron un total de 200 muestras de pacientes sometidos a apendicectomía. El 80% resultó sin hallazgos patológicos, mientras que 13,5% obliteración fibrosa, y 2,5% en apendicitis aguda en distinta etapa. Se evidenció una muestra de 0,5% de neoplasia maligna. Discusión: El porcentaje de apéndices no patológicos obtenidos se correlaciona con resultados expuestos en la literatura sobre apendicectomías incidentales. Por su parte, los hallazgos de malignidad están presentes en todos los reportes revisados, con una tasa relativa baja variable. Existe el debate si todos los apéndices deben ser estudiados. Conclusiones: No existen estudios similares al presente, sin embargo, es comparable a los reportes de apendicectomía incidental. Pareciera ser indispensable el estudio histopatológico por el riesgo de prevalencia de malignidad.

Objective: To report anatomopathological results of the prophylactic appendectomies in the Hospital Clínico de la Fuerza Aérea de Chile (FACh) and to compare them with existing studies. Material and Method: Descriptive, retrospective analysis of patients that underwent prophylactic appendectomies between 2013 and 2017 in the Hospital FACh and their anatomopathological results, according to clinical registries and pathology reports. Results: A total of 200 samples obtained from patients that underwent appendectomy were rescued. 80% resulted with no pathological findings, 13,5% had fibrous obliteration, and 2,5% showed acute appendicitis in different stages. Malignancy was found in 0,5% of the samples. Discussion: The percentage of non-pathological appendices correlates with the results reported in the literature. On the other hand, malignancy is present in all the reviewed reports, with a variable low relative rate. There is a debate on whether all appendixes should be studied. Conclusion: There are no studies like this one, however, our results are comparable to the reports of incidental appendectomies. Histopathological analysis seems to be essential due to the risk of prevalence of malignancy.

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Introducción. La apendicitis aguda es una afección común, con un pico de incidencia entre los 10 y 20 años. La cirugía es el tratamiento preferido y la apendicectomía por laparotomía sigue siendo el estándar, aunque el abordaje laparoscópico ha mostrado menos complicaciones. El objetivo de este artículo fue caracterizar tanto la enfermedad como el tratamiento quirúrgico en Colombia, usando datos de bases oficiales. Métodos. Se accedió a la base de datos del Sistema Integrado de Información para la Protección Social (SISPRO) del Ministerio de Salud de Colombia en febrero de 2023. Se recogieron datos de los pacientes con diagnóstico de apendicitis y con procedimiento de apendicectomía entre 2017 y 2021, y se analizaron por edad, sexo y ubicación geográfica. Resultados. Entre 2017 y 2021 se diagnosticaron 345.618 casos de apendicitis (51,8 % mujeres), con pico de incidencia a los 15-20 años. Se realizaron 248.133 apendicectomías, el 16,7 % por laparoscopia. Los hospitales con más procedimientos reportados estaban en Bogotá, Yopal, Popayán y Florencia. La mortalidad fue de 0,56 % en hombres y 0,51 % en mujeres. Conclusión. La apendicitis es común, con pico a los 10-19 años. Las mujeres tienen mayor probabilidad de apendicectomía, debido a otras afecciones ginecológicas. El acceso a la apendicectomía disminuye la mortalidad; en estos pacientes, el 16 % fue laparoscópica, lo que sugiere que se necesita más entrenamiento y acceso a esta técnica. Este estudio aporta a la comprensión de la epidemiología de la apendicitis y apendicectomías en Colombia.

Introduction. Acute appendicitis is a common condition, with a peak incidence between 10 and 20 years of age. Surgery is the preferred treatment and laparotomy appendectomy remains the standard, although the laparoscopic approach has shown fewer complications. The objective of this article was to characterize both the disease and the surgical treatment in Colombia, using data from official databases. Methods. The Integrated Information System for Social Protection (SISPRO) database of the Ministry of Health was accessed in February 2023. Data with diagnosis of apendicitis and with appendectomy between 2017 and 2021 were collected. Analysis was done by age, gender, and geographic location. Results. Between 2017 and 2021, 345,618 cases of appendicitis were diagnosed (51.8% females), with peak incidence at 15-20 years of age. A total of 248,133 appendectomies were performed, 16.7% by laparoscopy. The hospitals with most reported procedures were located in Bogotá, Yopal, Popayán, and Florencia. Mortality was 0.56% in men and 0.51% in women. Conclusion. Appendicitis is common, peaking at ages 10-19. Women are more likely undergo appendectomy due to other gynecological conditions. Access to appendectomy improves mortality. In these patients, 16% were laparoscopic, suggesting that more training and access to this technique is needed. This study contributes to the understanding of the epidemiology of appendicitis and appendectomies in Colombia.

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OBJECTIVE: The purpose of this study was to explore the appropriate surgical procedure and clinical decision for appendiceal adenocarcinoma. METHODS: A total of 1,984 appendiceal adenocarcinoma patients from 2004 to 2015 were retrospectively identified from the Surveillance, Epidemiology, and End Results (SEER) database. All patients were divided into three groups based on the extent of surgical resection: appendectomy (N = 335), partial colectomy (N = 390) and right hemicolectomy (N = 1,259). The clinicopathological features and survival outcomes of three groups were compared, and independent prognostic factors were assessed. RESULTS: The 5-year OS rates of patients who underwent appendectomy, partial colectomy and right hemicolectomy were 58.3%, 65.5% and 69.1%, respectively (right hemicolectomy vs appendectomy, P < 0.001; right hemicolectomy vs partial colectomy, P = 0.285; partial colectomy vs appendectomy, P = 0.045). The 5-year CSS rates of patients who underwent appendectomy, partial colectomy and right hemicolectomy were 73.2%, 77.0% and 78.7%, respectively (right hemicolectomy vs appendectomy, P = 0.046; right hemicolectomy vs partial colectomy, P = 0.545; partial colectomy vs appendectomy, P = 0.246). The subgroup analysis based on the pathological TNM stage indicated that there was no survival difference amongst three surgical procedures for stage I patients (5-year CSS rate: 90.8%, 93.9% and 98.1%, respectively). The prognosis of patients who underwent an appendectomy was poorer than that of those who underwent partial colectomy (5-year OS rate: 53.5% vs 67.1%, P = 0.005; 5-year CSS rate: 65.2% vs 78.7%, P = 0.003) or right hemicolectomy (5-year OS rate: 74.2% vs 53.23%, P < 0.001; 5-year CSS rate: 65.2% vs 82.5%, P < 0.001) for stage II disease. Right hemicolectomy did not show a survival advantage over partial colectomy for stage II (5-year CSS, P = 0.255) and stage III (5-year CSS, P = 0.846) appendiceal adenocarcinoma. CONCLUSIONS: Right hemicolectomy may not always be necessary for appendiceal adenocarcinoma patients. An appendectomy could be sufficient for therapeutic effect of stage I patients, but limited for stage II patients. Right hemicolectomy was not superior to partial colectomy for advanced stage patients, suggesting omission of standard hemicolectomy might be feasible. However, adequate lymphadenectomy should be strongly recommended.

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Background: Acute appendicitis (AA) is the most common surgical emergency in children. Assessment scales improve the timely detection of cases. Objective: To evaluate the association of the Pediatric Appendicitis Scale (PAS) with hospital stay (HS) and postoperative complications of appendectomy. Material and methods: Observational, analytical, longitudinal and retrolective study. Patients from 2 months to 15 years of age, without comorbidities, who underwent appendectomy for complicated (CAA) and uncomplicated (UCAA) acute appendicitis were included. PAS score prior to an appendectomy was obtained, and the time of HS and postoperative complications were evaluated. Results: 64 patients were evaluated, age 8 (IQR 8-12) years, PAS score 6 (IQR 4-8). The time from the onset of symptoms to the request for care in the emergency department was shorter (p < 0.0001) and the total neutrophil count was higher (p = 0.001) in the CAA group. No difference was shown in the PAS score between patients with CAA and UCAA (6 [4-7] vs. 7 [4-8], p = 0.087]. A PAS score ≥ 7 was associated with an increased risk of prolonged HE (p = 0.007), but was not associated with postoperative complications. The PAS score alongside the time elapsed from the onset of symptoms until the assistance in the Pediatric Emergency Department, were associated with an increased risk of prolonged HE (R2 = 0.2246, p = 0.003). Conclusions: A PAS score ≥ 7 is associated with prolonged HS, likewise, the PAS score alongside the time elapsed between the onset of symptoms and assistance in emergency care is associated with prolonged HS.

Introducción: la apendicitis aguda (AA) es la patología quirúrgica de urgencia más común en niños. Las escalas de valoración mejoran la detección oportuna de casos. Objetivo: evaluar la asociación de la Escala pediátrica de apendicitis (PAS) con la estancia hospitalaria (EH) y las complicaciones postoperatorias de apendicectomía. Material y métodos: estudio observacional, analítico, longitudinal y retrolectivo. Se incluyeron pacientes de 2 meses a 15 años, sin comorbilidades, intervenidos por apendicectomía por apendicitis aguda complicada (AAC) y no complicada (AANC). Se obtuvo el puntaje PAS previo a apendicectomía y se evaluó la EH y complicaciones postoperatorias. Resultados: se evaluaron 64 pacientes, edad 8 (RIC 8-12) años, puntaje de PAS 6 (RIC 4-8). El tiempo desde el inicio de los síntomas hasta la atención en urgencias fue menor (p < 0.0001) y la cuenta de neutrófilos totales fue mayor (p = 0.001) en el Grupo de AAC. No hubo diferencia en el puntaje PAS entre pacientes con AAC y AANC (6 [4-7] frente a 7 [4-8], p = 0.087). El puntaje PAS ≥ 7 se asoció con incremento del riesgo de EH prolongada (p = 0.007), pero no con complicaciones postoperatorias. El puntaje PAS en conjunto con el tiempo transcurrido desde el inicio de los síntomas hasta la atención en Urgencias Pediátricas se asoció a incremento del riesgo de EH prolongada (R2 = 0.2246, p = 0.003). Conclusiones: el puntaje PAS ≥ 7 se asocia con EH prolongada, y el puntaje PAS en conjunto con el tiempo transcurrido entre el inicio de síntomas y la atención en urgencias se asocia a EH prolongada.

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BACKGROUND: Early and accurate preoperative diagnosis of complicated appendicitis mandates the identification of new markers. The aim of this study is to determine whether preoperative serum sodium levels are useful for predicting the severity of acute appendicitis. METHODS: We retrospectively analyzed 475 patients who underwent emergency appendectomies between January 2018 and February 2023 in a general hospital in Brazil. The patients were divided into 2 groups: complicated (n = 254) and uncomplicated (n = 221). Hyponatremia was defined as serum sodium levels < 136 mEq/L. The primary outcome was to evaluate if hyponatremia is associated with complicated appendicitis. RESULTS: The patients had a median age of 22 years, and the median serum sodium level was 137 mEq/L in patients with complicated appendicitis and 139 mEq/L in uncomplicated appendicitis (P < 0.001). The analysis of the receiver operating characteristic curve used as the best cutoff value of serum sodium of 136 mEq/L with a sensitivity of 45.7%, specificity of 86.4%, positive predictive value of 79.5%, and negative predictive value of 58.1% for the diagnosis of complicated AA. Of the 254 patients with complicated appendicitis, 84 (33.1%) had serum sodium levels below 136 mEq/L, while only 12 (5.4%) patients with uncomplicated appendicitis had values ​​below this cutoff. Patients with hyponatremia were 5 times more likely to develop complicated appendicitis. (odds ratio: 5.35; 95% confidence interval: 3.39-8.45) CONCLUSIONS: Preoperative serum sodium levels are a useful tool for predicting the severity of acute appendicitis. Due to its low cost and wide availability, it has become an extremely relevant marker.

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Introducción: Existe una controversia acerca del mejor enfoque para el tratamiento de la apendicitis aguda no complicada. Este metaanálisis buscó evaluar la eficacia, recurrencia de la patología, presencia de complicaciones mayores, y duración de la estancia hospitalaria en adultos con apendicitis aguda no complicada. Materiales y Método: Se realizó una búsqueda sistemática de ensayos clínicos aleatorizados en las bases de datos PubMed, Scopus, Web of Science, Embase y Cochrane Library hasta finales de octubre del 2022. El riesgo de sesgo y calidad de los estudios incluidos en el estudio fueron evaluados mediante la herramienta RoB 2.0. de la Colaboración Cochrane. La síntesis de datos fue realizada a través del software Cochrane Review Manager (RevMan; version 5.3). Resultados: 6 estudios fueron incluidos, con un total de 1.862 pacientes. La probabilidad de presentar una mejoría clínica definitiva en el grupo que recibió antibioticoterapia fue menor (RR 0,5; IC95% 0,92-0,98; p = 0,004; IC2 = 44%). La probabilidad de presentar una recurrencia de la apendicitis en el grupo que recibió antibioticoterapia fue notablemente superior (RR 94,86; IC95% 30,73-292,81; p < 0,00001; IC2 = 0%). El grupo conservador presentó un menor riesgo de presentar una complicación mayor (RR 0,55; IC95% 0,36-0,85; p = 0,007; IC2 = 0%). El tratamiento conservador presentó una duración de la estancia hospitalaria superior que la apendicectomía (MD 0,34; IC95% 0,25-0,42; p < 0,00001; IC2 = 64%). Conclusiones: Esta revisión sistemática demuestra que, en términos de eficacia, recurrencia del cuadro y duración de la estancia hospitalaria, la antibioticoterapia es inferior a la apendicectomía en adultos con apendicitis aguda no complicada y superior en evitar la presencia de complicaciones mayores.

Introduction: There is controversy about the best approach for the treatment of uncomplicated acute appendicitis. This meta-analysis sought to assess efficacy, disease recurrence, presence of major complications, and length of hospital stay in adults with uncomplicated acute appendicitis. Materials and Method: A systematic search for randomized clinical trials was performed in the PubMed, Scopus, Web of Science, Embase, and Cochrane Library databases up to the end of October 2022. The risk of bias and quality of the studies included in the study were assessed. using the RoB 2.0 tool. of the Cochrane Collaboration. Data synthesis was performed using the Cochrane Review Manager software (RevMan; version 5.3). Results: 6 studies were included, with a total of 1.862 patients. The probability of presenting a definitive clinical improvement in the group that received antibiotic therapy was lower (RR 0.5; CI95% 0.92-0.98; p = 0.004; CI2 = 44%). The probability of presenting a recurrence of appendicitis in the group that received antibiotic therapy was notably higher (RR 94.86; 95%CI 30.73-292.81; p < 0.00001; CI2 = 0%). The conservative group presented a lower risk of presenting a major complication (RR 0.55; CI95% 0.36-0.85; p = 0.007; CI2 = 0%). Conservative treatment had a longer hospital stay than appendectomy (MD 0.34; 95%CI 0.250.42; p < 0.00001; CI2 = 64%). Conclusions: This systematic review shows that, in terms of efficacy, recurrence of the condition, and length of hospital stay, antibiotic therapy is inferior to appendectomy in adults with uncomplicated acute appendicitis, and superior in avoiding the presence of major complications.