Leonardo Alfonso Bustamante‐Lopez

ORCID: 0000-0002-3159-5858
Publications
Citations
Views
---
Saved
---
About
Contact & Profiles
Research Areas
  • Colorectal Cancer Surgical Treatments
  • Colorectal and Anal Carcinomas
  • Anorectal Disease Treatments and Outcomes
  • Gastric Cancer Management and Outcomes
  • Colorectal Cancer Screening and Detection
  • Pelvic floor disorders treatments
  • Diverticular Disease and Complications
  • Gastrointestinal disorders and treatments
  • Genetic factors in colorectal cancer
  • Sarcoma Diagnosis and Treatment
  • Helicobacter pylori-related gastroenterology studies
  • Pancreatic and Hepatic Oncology Research
  • Soft tissue tumor case studies
  • Pelvic and Acetabular Injuries
  • Appendicitis Diagnosis and Management
  • Stoma care and complications
  • Cardiac, Anesthesia and Surgical Outcomes
  • Enhanced Recovery After Surgery
  • Colorectal Cancer Treatments and Studies
  • Radiation Dose and Imaging
  • Gastrointestinal Tumor Research and Treatment
  • Tumors and Oncological Cases
  • Abdominal Surgery and Complications
  • Biliary and Gastrointestinal Fistulas
  • Hepatocellular Carcinoma Treatment and Prognosis

AdventHealth Orlando
2022-2025

Universidade de São Paulo
2015-2024

Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo
2015-2023

Universidade Federal de Goiás
2023

Translational Research Institute for Metabolism and Diabetes
2023

Santa Casa de Misericórdia de Marília
2023

Health Outcomes Solutions (United States)
2022

Universidade Nove de Julho
2022

Hospital Universitário da Universidade de São Paulo
2022

Universidad Pontificia Bolivariana
2021

Since 1990 it was proposed that distal and proximal location of colon cancer might follow different biological, epidemiology, pathology prognosis, probably due to embryologic development the two segments colon, which may represent separate disease entities. These differences have consequences for treatment patients with colorectal cancer.To compare characteristics between right left cancer, severity tumor characteristic influence in survival these patients.Were evaluated outcomes surgical...

10.1590/0102-672020190001e1479 article EN cc-by ABCD Arquivos Brasileiros de Cirurgia Digestiva (São Paulo) 2019-01-01

To evaluate the prevalence of upper gastrointestinal (GI) polyps in familial adenomatous polyposis (FAP), and to discuss current therapeutic recommendations.Clinical, endoscopic, histological treatment data were retrieved from charts 102 patients [1958-2016]. Duodenal adenomatosis was classified according Spigelman stages.this series comprised 59 women (57.8%) 43 men (42.1%) with a median age 32.3 years. Patients underwent 184 endoscopic procedures, first at 35.9 years (range, 13-75 years)....

10.21037/jgo.2019.03.06 article EN Journal of Gastrointestinal Oncology 2019-07-09

BACKGROUND: Multispecialty management should be the preferred approach for treatment of pelvic floor dysfunction, as there is often multicompartmental prolapse. OBJECTIVE: To assess safety combined robotic ventral-mesh rectopexy and either uterine or vaginal fixation organ prolapse at our institution. DESIGN: Retrospective analysis. SETTINGS: Tertiary referral academic center. PATIENTS: All patients who underwent a procedure discussed biweekly multidisciplinary team meeting. MAIN OUTCOME...

10.1097/dcr.0000000000003013 article EN Diseases of the Colon & Rectum 2023-10-02

Clinical complete responders after chemoradiation for rectal cancer are increasingly being managed by a watch-and-wait strategy. Nonetheless, significant proportion will experience local regrowth, and the long-term oncological outcomes of these patients is not totally known.The purpose this study was to analyze who submitted strategy developed compare results with sustained clinical responders.This retrospective study.Single institution, tertiary center involved in alternatives organ...

10.1097/dcr.0000000000002197 article ES Diseases of the Colon & Rectum 2021-11-14

In addition to the presence of neoplasia in colon and rectum, patients with familial adenomatous polyposis (FAP) may develop numerous polyps carcinoma within upper gastrointestinal tract.The aim present paper was review incidence advanced duodenal or cancer their surgical outcomes. A retrospective patients' records from our department performed. Information retrieved a prospective collected data, including clinical (gender, age, family history), endoscopic [association colorectal (CRC),...

10.21037/jgo.2017.09.03 article EN cc-by-nc-nd Journal of Gastrointestinal Oncology 2017-10-01

Abstract Background and study aims To determine the clinical features associated with advanced duodenal ampullary adenomas in familial adenomatous polyposis. Secondarily, we describe prevalence significance of jejunal Patients methods This is a single center, prospective 62 patients Duodenal polyposis was classified according to Spigelman were identified. III IV underwent balloon assisted enteroscopy. Predefined groups presence or not related variables: gender, age, family history polyposis,...

10.1055/a-0577-2650 article EN cc-by-nc-nd Endoscopy International Open 2018-04-18

BACKGROUND: Colorectal cancer is one of the most common malignancies in world. There are many controversies literature about prognostic value primary tumor location. Many studies have shown higher survival rates for tumors right colon, and worse prognosis lesions located more distally colon. AIM: To analyze results surgical treatment right-sided colon cancers patients operated decade period identify factors that were associated with lower overall stages I-IV patients. METHODS: A...

10.1590/s0102-67202015000100002 article EN ABCD Arquivos Brasileiros de Cirurgia Digestiva (São Paulo) 2015-01-01

ABSTRACT BACKGROUND: Scleroderma or progressive systemic sclerosis is characterized by a chronic inflammatory process with proliferation of fibrous connective tissue and excessive deposition collagen extracellular matrix in the skin, smooth muscle, viscera. The muscle most involved scleroderma that esophagus, dysphagia commonly reported symptom. However, internal anal sphincter may also be impaired degeneration fibrosis, leading to concomitant incontinence patients. These patients neglect...

10.1590/s0004-2803.201800000-49 article EN cc-by-nc Arquivos de Gastroenterologia 2018-10-03

Background and objective Optical colonoscopy is the gold standard method for diagnosis of colorectal cancer (CRC) it allows biopsy resection, as well documentation synchronous lesions. CT colonography (CTC) colon endoscopic capsule (CEC) are also recommended alternative minimally invasive or non-invasive procedures. Prospective studies comparing these three approaches scarce in current literature. In light this, aim this pilot study was to compare efficacy polyp detection between methods...

10.7759/cureus.38410 article EN Cureus 2023-05-01

The aim of this study was to assess laparoscopic lavage in patients with acute diverticulitis.In recent times, peritoneal has been considered a therapeutic alternative standard resection procedures. In Hinchey III diverticulitis there is the possibility avoiding ostomies or procedures.This retrospective conducted single-care institution.Patients requiring emergency surgery for perforated and generalized peritonitis between March 2011 May 2014 were identified from prospective database....

10.1097/mcg.0000000000000619 article EN Journal of Clinical Gastroenterology 2016-09-13

OBJECTIVES: This study sought to determine the clinical and pathological factors associated with perioperative morbidity, mortality oncological outcomes after multivisceral en bloc resection in patients colorectal cancer.METHODS: Between January 2009 February 2014, 105 primary cancer selected for were identified from a prospective database.Clinical factors, morbidity obtained medical records.Estimated local recurrence overall survival compared using log-rank method, Cox regression analysis...

10.6061/clinics/2017(05)01 article EN cc-by Clinics 2017-01-01

Abstract: The pelvic floor is a complex mechanical apparatus composed by the levator ani, superficial perineal muscles, nerves, endopelvic fascia, and ligaments. anatomy somewhat challenging to both surgeons anatomists. It narrow deep region that encompasses intestinal, gynecologic, urologic viscera, vessels, fascial attachments. designed for content suspension promote coordinated action during bladder rectal emptying. Support organs originates from connections pelvis associated muscles....

10.21037/ales-2022-06 article EN Annals of Laparoscopic and Endoscopic Surgery 2022-04-01

Rectal diverticula are a very rare occurrence compared to of the colon. They reported account for only 0.08% all diverticulosis. Diverticula rectum can be caused by congenital or acquired factors. The majority asymptomatic, diagnosed incidentally, and require no treatment. low incidence rectal diverticulosis may attributed unique anatomical structure physiological environment rectum. However, complications arise necessitate surgical endoscopic treatment.We report case 72-year-old female with...

10.21037/tcr-22-2676 article EN Translational Cancer Research 2023-03-20

Rectal prolapse is common in the elderly, having an incidence of 1% patients over 65 years age. The aim this study was to evaluate safety and feasibility a new endoluminal procedure for attaching previously mobilized rectum anterior abdominal wall using endoscopic fixation device. single-arm phase i experimental trial. Under general anesthesia, total rectal surgically reproduced five pigs. Transanal reduction performed. best site transillumination wall, suitable rectopexy, identified....

10.1016/j.rgmxen.2016.10.001 article EN cc-by-nc-nd Revista de Gastroenterología de México (English Edition) 2016-10-01
Coming Soon ...