Leonardo Alfonso Bustamante‐Lopez
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View article: A modified stapled hemorrhoidectomy technique to optimize mucosectomy specimen and improve outcomes
A modified stapled hemorrhoidectomy technique to optimize mucosectomy specimen and improve outcomes Open
BACKGROUND: Surgical treatment of hemorrhoidal disease has undergone numerous modifications in recent decades. Among the technical options, stapled hemorrhoidopexy is currently considered an optimal alternative because it provides a less p…
View article: Idiopathic myointimal hyperplasia of the mesenteric veins—a report of two cases
Idiopathic myointimal hyperplasia of the mesenteric veins—a report of two cases Open
A multidisciplinary team approach to this condition will be vital to administering the appropriate treatment modalities for future cases of IMHMV.
View article: A Proposal for Modification of Ferguson's Closed Hemorrhoidectomy Technique Aiming Better Outcomes
A Proposal for Modification of Ferguson's Closed Hemorrhoidectomy Technique Aiming Better Outcomes Open
Many technical propositions have been incorporated to the surgical management of hemorrhoidal disease during the recent decades. Besides that, escisional techniques are still considered the best option to control symptoms and reduce recurr…
View article: A REVIEW TO HONOR THE HISTORICAL CONTRIBUTIONS OF PAULINE GROSS, ALDRED WARTHIN, AND HENRY LYNCH IN THE DESCRIPTION AND RECOGNITION OF INHERITANCE IN COLORECTAL CANCER.
A REVIEW TO HONOR THE HISTORICAL CONTRIBUTIONS OF PAULINE GROSS, ALDRED WARTHIN, AND HENRY LYNCH IN THE DESCRIPTION AND RECOGNITION OF INHERITANCE IN COLORECTAL CANCER. Open
The present manuscript aimed to review the historical development and most important contributions regarding Lynch Syndrome since its first description, more than a century ago. In 1895, a reputed pathologist from Michigan University, Dr. …
View article: Prognostic factors for local recurrence in patients with rectal cancer submitted to neoadjuvant chemoradiotherapy and total mesorectal excision
Prognostic factors for local recurrence in patients with rectal cancer submitted to neoadjuvant chemoradiotherapy and total mesorectal excision Open
Local recurrence of rectal cancer treated with long-course chemoradiation and total mesorectal excision is low and is associated with pathologic involvement of the radial surgical margin and can be predicted on restaging MRI.
View article: Large rectal diverticulum in the setting of pelvic organ prolapse treated with robotic ventral mesh rectopexy: a case report
Large rectal diverticulum in the setting of pelvic organ prolapse treated with robotic ventral mesh rectopexy: a case report Open
Rectal diverticula can present in the setting of pelvic organ prolapse and can be safely managed with ventral mesh rectopexy.
View article: Unusual presentation of a neuroendocrine tumor in the ileostomy specimen after rectal cancer treatment: a case report
Unusual presentation of a neuroendocrine tumor in the ileostomy specimen after rectal cancer treatment: a case report Open
This extraordinary unusual presentation could be very fortuity for the patient, who in every other opportunity just found this neuroendocrine tumor after advanced or maybe metastatic diseases.
View article: LAPAROSCOPIC RIGHT AND LEFT COLECTOMY: WHICH PROVIDES BETTER POSTOPERATIVE RESULTS FOR ONCOLOGY PATIENTS?
LAPAROSCOPIC RIGHT AND LEFT COLECTOMY: WHICH PROVIDES BETTER POSTOPERATIVE RESULTS FOR ONCOLOGY PATIENTS? Open
BACKGROUND: The laparoscopic approach considerably reduced the morbidity of colorectal surgery when compared to the open approach. Among its benefits, we can highlight less intraoperative bleeding, early oral intake, lower rates of surgica…
View article: Case Series of Right Colon Diverticulitis in the West: A Neglected Disease?
Case Series of Right Colon Diverticulitis in the West: A Neglected Disease? Open
Introduction Right colon diverticulitis (RCD) is an uncommon condition in Western populations, but its incidence has increased over the last decades. Due to its rarity, many surgeons are unfamiliar with this disease, which is often mistake…
View article: Pelvic floor anatomy
Pelvic floor anatomy Open
The pelvic floor is a complex mechanical apparatus composed by the levator ani, superficial perineal muscles, pelvic nerves, endopelvic fascia, and ligaments. The pelvic anatomy is somewhat challenging to both surgeons and anatomists. It i…
View article: Systematic review and meta-analysis of colon capsule endoscopy accuracy for colorectal cancer screening. An alternative during the Covid-19 pandemic?
Systematic review and meta-analysis of colon capsule endoscopy accuracy for colorectal cancer screening. An alternative during the Covid-19 pandemic? Open
Aim To determine the diagnostic accuracy of colon capsule endoscopy for colorectal cancer screening. Methods Studies that compared the diagnostic performance of colonoscopy and second-generation colon capsule endoscopy (CCE-2) for screenin…
View article: Prognostic factors of surgically-treated patients with cancer of the right colon: a ten years' experience of a single universitary institution
Prognostic factors of surgically-treated patients with cancer of the right colon: a ten years' experience of a single universitary institution Open
BACKGROUND: Colorectal cancer is one of the most common malignancies in the world. There are many controversies in the literature about the prognostic value of primary tumor location. Many studies have shown higher survival rates for tumor…
View article: IS IT POSSIBLE TO OPTIMIZE STAPLED HEMORRHOIDOPEXY OUTCOMES BY ENLARGING OPERATIVE CRITERIA INDICATIONS? RESULTS OF A TAILORED PROCEDURE WITH ASSOCIATED RESECTION IN A COMPARATIVE PERSONAL SERIES
IS IT POSSIBLE TO OPTIMIZE STAPLED HEMORRHOIDOPEXY OUTCOMES BY ENLARGING OPERATIVE CRITERIA INDICATIONS? RESULTS OF A TAILORED PROCEDURE WITH ASSOCIATED RESECTION IN A COMPARATIVE PERSONAL SERIES Open
BACKGROUND: Since its introduction, stapled hemorrhoidopexy has been increasingly indicated in the management of hemorrhoidal disease. AIM: Our primary end point was to evaluate the incidence of recurrent disease requiring another surgical…
View article: Surgical Technique and Considerations about Transanal Transection and Single-Stapled (TTSS) Anastomosis: The Search for a Perfect Anastomosis
Surgical Technique and Considerations about Transanal Transection and Single-Stapled (TTSS) Anastomosis: The Search for a Perfect Anastomosis Open
The evaluation of preventive measures and risk factors for anastomotic leakage has been a constant concern among colorectal surgeons. In this context, the description of a new way to perform a colorectal, coloanal or ileoanal anastomosis, …
View article: ANORECTAL MANOMETRY STANDARD OF A BRAZILIAN POPULATION AT PRODUCTIVE AGE WITHOUT PELVIC FLOOR DISORDERS: A PROSPECTIVE VOLUNTEERED STUDY
ANORECTAL MANOMETRY STANDARD OF A BRAZILIAN POPULATION AT PRODUCTIVE AGE WITHOUT PELVIC FLOOR DISORDERS: A PROSPECTIVE VOLUNTEERED STUDY Open
Background: Due to the lack of normal standards of anorectal manometry in Brazil, data used are subject to normality patterns described at different nationalities. Aim: To determine the values and range of the parameters evaluated at anore…
View article: IS LAPAROSCOPIC REOPERATION FEASIBLE TO TREAT EARLY COMPLICATIONS AFTER LAPAROSCOPIC COLORECTAL RESECTIONS?
IS LAPAROSCOPIC REOPERATION FEASIBLE TO TREAT EARLY COMPLICATIONS AFTER LAPAROSCOPIC COLORECTAL RESECTIONS? Open
Background: Recently, with the performance of minimally invasive procedures for the management of colorectal disorders, it was allowed to extend the indication of laparoscopy in handling various early and late postoperative complications. …
View article: Variables affecting desmoid tumor risk in Familial Adenomatous Polyposis: A critical review
Variables affecting desmoid tumor risk in Familial Adenomatous Polyposis: A critical review Open
Introduction: Familial Adenomatous Polyposis (FAP) is a genetic disorder that predisposes to colorectal cancer and many other extracolonic manifestations.Among them, desmoid disease is considered a great challenge and a major source of mor…
View article: IS LAPAROSCOPIC REOPERATION FEASIBLE TO TREAT EARLY COMPLICATIONS AFTER LAPAROSCOPIC COLORECTAL RESECTIONS?
IS LAPAROSCOPIC REOPERATION FEASIBLE TO TREAT EARLY COMPLICATIONS AFTER LAPAROSCOPIC COLORECTAL RESECTIONS? Open
Background: Recently, with the performance of minimally invasive procedures for the management of colorectal disorders, it was allowed to extend the indication of laparoscopy in handling various early and late postoperative complications. …
View article: Upper gastrointestinal neoplasia in familial adenomatous polyposis: prevalence, endoscopic features and management
Upper gastrointestinal neoplasia in familial adenomatous polyposis: prevalence, endoscopic features and management Open
There is a high prevalence of upper GI adenomas and cancer in FAP. There were diagnosed fundic gastric polyps (30.4%), duodenal (32.4%) and jejunal adenomas (11.8%), respectively. One third of duodenal polyps progressed slowly throughout t…
View article: IS THERE A DIFFERENCE BETWEEN RIGHT- VERSUS LEFT-SIDED COLON CANCERS? DOES SIDE MAKE ANY DIFFERENCE IN LONG-TERM FOLLOW-UP?
IS THERE A DIFFERENCE BETWEEN RIGHT- VERSUS LEFT-SIDED COLON CANCERS? DOES SIDE MAKE ANY DIFFERENCE IN LONG-TERM FOLLOW-UP? Open
Background: Since 1990 it was proposed that distal and proximal location of colon cancer might follow different biological, epidemiology, pathology and prognosis, probably due to embryologic different development of the two segments of the…
View article: IS THERE A DIFFERENCE BETWEEN RIGHT- VERSUS LEFT-SIDED COLON CANCERS? DOES SIDE MAKE ANY DIFFERENCE IN LONG-TERM FOLLOW-UP?
IS THERE A DIFFERENCE BETWEEN RIGHT- VERSUS LEFT-SIDED COLON CANCERS? DOES SIDE MAKE ANY DIFFERENCE IN LONG-TERM FOLLOW-UP? Open
Background: Since 1990 it was proposed that distal and proximal location of colon cancer might follow different biological, epidemiology, pathology and prognosis, probably due to embryologic different development of the two segments of the…
View article: Adoption rates of laparoscopic techniques for colorectal resections among Brazilian surgeons: limiting factors affecting incorporation into daily practice
Adoption rates of laparoscopic techniques for colorectal resections among Brazilian surgeons: limiting factors affecting incorporation into daily practice Open
Routine adoption of laparoscopy in clinical practice and Medical Residency has not been widely evaluated in Brazil so far. Aim To take an overview on the adoption and limitations concerning the use of laparoscopic techniques among Brazilia…
View article: FUNCTIONAL AND ANATOMICAL ANALYSIS OF THE ANORECTUM OF FEMALE SCLERODERMA PATIENTS AT A CENTER FOR PELVIC FLOOR DISORDERS
FUNCTIONAL AND ANATOMICAL ANALYSIS OF THE ANORECTUM OF FEMALE SCLERODERMA PATIENTS AT A CENTER FOR PELVIC FLOOR DISORDERS Open
BACKGROUND: Scleroderma or progressive systemic sclerosis is characterized by a chronic inflammatory process with proliferation of fibrous connective tissue and excessive deposition of collagen and extracellular matrix in the skin, smooth …