Browsing by Author "Inzunza, Martin"

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    GALLBLADDER POLYPS: CORRELATION AND AGREEMENT BETWEEN ULTRASONOGRAPHIC AND HISTOPATHOLOGICAL FINDINGS IN A POPULATION WITH HIGH INCIDENCE OF GALLBLADDER CANCER
    (2023) Inzunza, Martin; Irarrazaval, Maria Jesus; Pozo, Paloma; Pimentel, Fernando; Crovari, Fernando; Ibanez, Luis
    BACKGROUND: Gallbladder polyps are becoming a common finding in ultrasound. The management has to consider the potential risk of malignant lesions. AIMS: The aim of this study was to analyze the ultrasound findings in patients undergoing cholecystectomy due to gallbladder polyps and compare them for histopathological findings (HPs). METHODS: Patients with an ultrasonographic diagnosis of gallbladder polyp and who underwent cholecystectomy from 2007 to 2020 were included in the study. RESULTS: A total of 447 patients were included, of whom 58% were women. The mean age was 45 +/- 12 years. The mean size of polyps in US was 7.9 +/- 3.6 mm. Notably, 9% of polyps were greater than 10 mm, and single polyps were significantly larger than the multiple ones (p=0.003). Histopathological findings confirmed the presence of polyps in 88.4%, with a mean size of 4.8 +/- 3.4 mm. In all, 16 cases were neoplastic polyps (4.1%), 4 of them being malignancies, and all were single and larger than 10 mm. We found a significant correlation between ultrasound and histopathological findings polyp size determination (r=0.44; p<0.001). The Bland-Altman analysis obtained an overestimation of the US size of 3.26 mm. The receiver operating characteristic (ROC) curve analysis between both measures obtained an area under the receiver operating characteristic curve (AUC) of 0.77 (95%CI 0.74-0.81). Ultrasound polyps size larger than 10 mm had an odds ratio (OR) of 8.147 (95%CI 2.56-23.40) for the presence of adenoma and malignancy, with a likelihood ratio of 2.78. CONCLUSIONS: There is a positive correlation and appropriate diagnostic accuracy between ultrasound size of gallbladder polyps compared to histopathological records, with a trend to overestimate the size by about 3 mm. Neoplastic polyps are uncommon, and it correlates with size. Polyps larger than 10 mm were associated with adenoma and malignancy.
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    Morbidity and Mortality in Patients with Perioperative COVID-19 Infection: Prospective Cohort in General, Gastroesophagic, Hepatobiliary, and Colorectal Surgery
    (2021) Inzunza, Martin; Romero, Cecilia; Jesus Irarrazaval, Maria; Ruiz-Esquide, Magdalena; Achurra, Pablo; Quezada, Nicolas; Crovari, Fernando; Munoz, Rodrigo
    Background Severe acute respiratory syndrome due to coronavirus 2 has rapidly spread worldwide in an unprecedented pandemic. Patients with an ongoing COVID-19 infection requiring surgery have higher risk of mortality and complications. This study describes the mortality and morbidity in patients with perioperative COVID-19 infection undergoing elective and emergency surgeries. Methods Prospective cohort of consecutive patients who required a general, gastroesophageal, hepatobiliary, colorectal, or emergency surgery during COVID-19 pandemic at an academic teaching hospital. The primary outcome was 30-day mortality and major complications. Secondary outcomes were specific respiratory mortality and complications. Results A total of 701 patients underwent surgery, 39 (5.6%) with a perioperative COVID-19 infection. 30-day mortality was 12.8% and 1.4% in patients with and without COVID-19 infection, respectively (p < 0.001). Major surgical complications occurred in 25.6% and 6.8% in patients with and without COVID-19 infection, respectively (p < 0.001). Respiratory complications occurred in 30.8% and 1.4% in patients with and without COVID-19 infection, respectively (p < 0.001). Mortality due to a respiratory complication was 100% and 11.1% in patients with and without COVID-19 infection, respectively (p < 0.006). Conclusions 30-day mortality and surgical complications are higher in patients with perioperative COVID-19 infection. Indications for elective surgery need to be reserved for non-deferrable procedures in order to avoid unnecessary risks of non-urgent procedures.
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    Safety of Bariatric Surgery During the Opening Phase After the First Wave of the COVID-19 Pandemic: Experience at an Academic Center
    (2021) Crovari, Fernando; Inzunza, Martin; Irarrazaval, Maria J.; Romero, Cecilia; Achurra, Pablo; Quezada, Nicolas; Gabrielli, Mauricio; Munoz, Rodrigo
    Introduction Increased morbimortality in patients with COVID-19 infection who had undergone surgery has raised concerns about bariatric surgery safety during the current COVID-19 pandemic. Currently, there is scarce literature on safety outcomes after bariatric surgery during the COVID-19 pandemic.
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    Type I choledochal cyst. Total laparoscopic resection and Roux-en-Y reconstruction to two separated ducts
    (2024) Reyes, Natalia; Sotomayor, Camila; Inzunza, Martin; Briceno, Eduardo; Vinuela, Eduardo; Martinez, Jorge; Jarufe, Nicolas
    A choledochal cyst is a rare condition that requires surgical treatment to prevent complications, such as obstructive jaundice, cyst rupture, cholangitis, and the risk of malignancy. Complete cyst excision is considered the best option, as it reduces the risk of inflammation and the development of cholangiocarcinoma. Therefore, cholecystectomy and complete cyst resection followed by reconstruction with a Roux-en-Y hepaticojejunostomy is the treatment of choice. We present a case (with video) that shows the complete resection of a type I choledochal cyst with Roux-en-Y reconstruction of two separate ducts since the right posterior duct reached the cyst independently. The laparoscopic approach offers all the advantages of mini-invasive surgery and better visualization of the structures; however, biliary reconstruction to fine ducts implies a surgical challenge that requires high training in mini-invasive surgery.