Oscar Vidal

• MD, PhD, MHM, MPM
• Researcher at Consorci Institut D'Investigacions Biomediques August Pi I Sunyer

The purpose of our study was to evaluate the efficacy and safety of partial adrenalectomy (PA) in the management of pheochromocytomas. A systematic review and metanalyses of all randomized controlled trials and observational studies (comparative and non-comparative studies), including case series with at least 5 cases, reporting efficacy and safety...

Adrenocortical carcinoma (ACC) is a rare endocrine malignancy with an estimated incidence of 0.7–2 cases per million/year. The rarity of this disease, coupled with limited preclinical models and clinical trials, has hindered progress, resulting in poor outcomes, with a 5-year survival rate of approximately 35%. Currently, the only available curativ...

Introduction Postoperative outcomes of patients with normotensive pheochromocytomas are poorly documented. We aimed to evaluate the impact of preoperative hypertension on post-operative outcomes following adrenalectomy for pheochromocytoma. Methods An international retrospective study of patients undergoing adrenalectomy for pheochromocytoma in 46...

Background Cushing's syndrome (CS) results from prolonged exposure to excessive glucocorticoids (GCs), leading to metabolic disturbances and adrenal insufficiency (AI). Fibroblast growth factor 21 (FGF21) has shown promise as a potential therapeutic target for metabolic disorders. This study explores the effects of FGF21 on adrenal gland function i...

The impact of obesity on outcomes after adrenalectomy for pheochromocytoma is unclear. This study aims to evaluate outcomes after minimally invasive and open adrenalectomy for pheochromocytoma in patients with obesity and to determine factors that may affect outcomes. Patients undergoing adrenalectomy for pheochromocytoma in 46 international center...

Surgical site infection (SSI) continues to be a common complication of surgery. The real benefit of using topical antibiotics for the prevention of SSI in abdominal hernia repair surgery is still unknown. This study aimed to evaluate the usefulness of topical gentamicin in SSI prophylaxis in incisional hernia repair with mesh. A randomized controll...

We investigated the use patterns and indications of intraoperative neural monitoring (IONM) among endocrine surgeons in Spain. We sent an anonymous web-based survey to endocrine surgeons’ members of the Spanish Association of Surgery by email. We analysed 79/ 269 surveys. Respondents had a median age of 52 years and 13 years of surgical experience....

Surgical site infection (SSI) continues to be a common complication of surgery. The real benefit of using topical antibiotics for the prevention of SSI in abdominal hernia repair surgery is still unknown. This study aimed to evaluate the usefulness of topical gentamicin in SSI prophylaxis in incisional hernia repair with mesh. A randomized controll...

Lay Summary Surgical technique is essential to ensure safe minimally invasive adrenalectomy. Due to the relative rarity of adrenal surgery, it is challenging to ensure adequate exposure in surgical training. Surgical video analysis supports auto-evaluation, expert assessment and could be a target for automatization. The developed ontology was valid...

Purpose The use of outpatient surgery in inguinal hernia is heterogeneous despite clinical recommendations. This study aimed to analyze the utilization trend of outpatient surgery for bilateral inguinal hernia repair (BHIR) in Spain and identify the factors associated with outpatient surgery choice and unplanned overnight admission. Methods A retr...

Background Although the safety of laparoscopic transabdominal lateral adrenalectomy (TLA) depends on the learning curve and experience of surgeons, surgical training remains a challenge as adrenalectomies are relatively rare. Structured laparoscopic video analysis supports individual training and could pave the way for automatic workflow recognitio...

Purpose The use of outpatient surgery in inguinal hernia is heterogeneous despite clinical recommendations. This study aimed to analyze the utilization trend of outpatient surgery for bilateral inguinal hernia repair (BHIR) in Spain and identify the factors associated with outpatient surgery choice and unplanned overnight admission. Methods A retr...

Background The guidelines recommend laparoscopic repair for bilateral inguinal hernia. However, few studies compare the totally extraperitoneal (TEP) and transabdominal preperitoneal (TAPP) techniques in bilateral inguinal hernias. This study aimed to compare the outcomes of TEP and TAPP in bilateral inguinal hernia. Methods We conducted a retrosp...

Background: The guidelines recommend laparoscopic repair for bilateral inguinal hernia. However, few studies compare the totally extraperitoneal (TEP) and transabdominal preperitoneal (TAPP) techniques in bilateral inguinal hernia. This study aimed to compare the outcomes of TEP and TAPP in bilateral inguinal hernia. Methods: We conducted a retrosp...

Background Many clinical guidelines recommend the preoperative administration of Lugol's solution (LS) for patients undergoing thyroidectomy for Graves’ disease (GD), mainly based on low-quality evidence. Our aim was to assess its influence on intra and postoperative outcomes in patients undergoing total thyroidectomy (TT) for GD. Methods We perfo...

Summary Background: Since its outbreak in early 2020, the COVID-19 pandemic has diverted resources from non-urgent and elective procedures, leading to diagnosis and treatment delays, with an increased number of neoplasms at advanced stages worldwide. The aims of this study were to quantify the reduction in surgical activity for indeterminate thyr...

Benefits of minimally invasive adrenal surgery (MIAS) are widely reported, and it has almost replaced open surgery in the management of most adrenal pathologies. Comparisons between laparoscopic and retroperitoneoscopic approaches were detailed above. However, these surgical approaches for treatment of malignant disease, especially for primary adre...

Laparoscopic adrenalectomy can be considered the gold standard for the treatment of adrenal diseases. The laparoscopic approach has demonstrated greater benefits in terms of patient outcomes, decreasing postoperative pain and disability, length of hospital stay, complication rate, and blood loss in comparison with open adrenalectomy. In addition, t...

In the last decades, minimally invasive laparoscopic adrenalectomy has become the standard of care for surgical resection of benign adrenal gland tumors. This chapter describes the current evidence on adrenalectomy techniques, comparing transperitoneal laparoscopic adrenalectomy (TLAdr) with posterior retroperitoneoscopic adrenalectomy (PRA). The o...

Background: Primary hyperparathyroidism is a common endocrine disorder produced by the increase of parathyroid hormone (PTH) due to a benign adenoma of a single parathyroid gland, or as multiple gland hyperplasia, or as a rare malignant tumor. Preoperative imaging scans are frequently necessary for the minimally invasive parathyroidectomies to ide...

Background The objective of this study was to compare with the conventional open approach, the surgical and aesthetic results of endoscopic thyroidectomy via unilateral axillo-breast approach (UABA) with gas insufflation in patients with a unilateral thyroid nodule. Methods Between August 2017 and August 2020, a prospective comparative cohort stud...

Background Extracervical approaches for thyroidectomy are seldom explored in the western population. The objective of this study was to evaluate the outcomes of hemithyroidectomy via endoscopic unilateral axillo-breast approach (UABA) with gas insufflation. Method Consecutive patients undergoing UABA hemithyroidectomy for symptomatic benign or cyt...

Introduction Most common cause of primary hyperparathyroidism (PHPT) is parathyroid adenoma, being surgery the only curative treatment. Nowadays, minimally invasive approach is preferred instead of cervical bilateral exploration, as implies an early recovery, lower rate of complications and cost-effective results. This surgical approach requires to...

Chronic cortisol excess induces several alterations on protein, lipid and carbohydrate metabolism resembling those found in the metabolic syndrome. However, patients exposed to prolonged high levels of cortisol in Cushing syndrome (CS) present exceeding cardiometabolic alterations not reflected by conventional biomarkers. Using 3 ultra-high-perform...

We aimed to identify presurgical and surgical risk factors for intraoperative complications in patients with pheochromocytomas. A retrospective study of patients with pheochromocytomas who underwent surgery in ten Spanish hospitals between 2011 and 2021 was performed. One hundred and sixty-two surgeries performed in 159 patients were included. The...

Background Currently, both the American Thyroid Association and the European Thyroid Association recommend preoperative preparation with Lugol's Solution (LS) for patients undergoing thyroidectomy for Graves’ Disease (GD), but their recommendations are based on low-quality evidence. The LIGRADIS trial aims to provide evidence either to support or r...

Background Laparoscopic adrenalectomy has become the standard of care for treating adrenal tumors. Conversion from laparoscopic adrenalectomy to an open approach during surgery may be necessary in some cases. This study aimed to identify the risk factors for open conversion of laparoscopic adrenalectomy. Methods Retrospective analysis of all conse...

Background: Alterations in circulating amino acids, polyamines and acylcarnitines have been reported in patients with endogenous chronic hypercortisolism. However, lipid metabolites profiling and its interplay with the serum metabolome and degree of hypercortisolism in patients with active Cushing syndrome (CS) has not been previously assessed. Obj...

Background: The outcome of adrenalectomy carried out by laparoscopy or open surgery for solid tumor metastases was assessed. Methods: A total of 317 patients with histologically confirmed adrenal metastatic disease collected from 30 centres in Europe underwent adrenalectomy by laparoscopy (n=146) or open laparotomy (n=171). Differences between l...

Background Published data in the last decade showed that a majority of adrenal operations are done by surgeons performing only one such case per year and based on the distribution of personal workloads ‘high-volume’ surgeons are defined as those doing 4 or more cases/year. Purpose This paper summarises literature data identified by a working group...

Minimally invasive approaches for endocrine surgery of the neck are the result of efforts by several surgeons to extrapolate to neck surgery the proven benefits of minimally invasive techniques from other regions of the body, including less pain, morbidity and hospital stay. However, the main argument that led to the introduction of these technique...

Minimally invasive approaches for endocrine surgery of the neck are the result of efforts by several surgeons to extrapolate to neck surgery the proven benefits of minimally invasive techniques from other regions of the body, including less pain, morbidity and hospital stay. However, the main argument that led to the introduction of these technique...

Introduction Cortical-sparing adrenalectomy is a suitable treatment for hereditary and sporadic bilateral pheochromocytoma, in cases of low risk of malignancy, to reduce the possibility of adrenal insufficiency assuming the chance of local recurrence. The aim of the study is to analyze the functional results of partial adrenalectomy by retroperiton...

Background: The optimal surgical management of papillary thyroid cancer (PTC) for T1-T2 tumors without pre or intrasurgical evidence of lymph node metastasis (cN0) remains controversial, since approximately 40% of patients have lymph node involvement (pN1) which becomes evident when a prophylactic lymphadenectomy (PL) is performed. The aim of this...

1. Background Cervical esophageal perforation of traumatic origin is a rare condition that entails a vital risk for the patient. Early management by the emergency team is crucial to reduce the high morbidity and mortality that is usually associated with this pathology. 2. Methods We descr ibe a rare case of cervical esophageal perforation caused...

Introduction: Cortical-sparing adrenalectomy is a suitable treatment for hereditary and sporadic bilateral pheochromocytoma, in cases of low risk of malignancy, to reduce the possibility of adrenal insufficiency assuming the chance of local recurrence. The aim of the study is to analyze the functional results of partial adrenalectomy by retroperit...

1. Background Cervical esophageal perforation of traumatic origin is a rare condition that entails a vital risk for the patient. Early management by the emergency team is crucial to reduce the high morbidity and mortality that is usually associated with this pathology. 2. Methods We describe a rare case of cervical esophageal perforation caused by...

Our consumption of raw materials and energy has reached unprecedented levels which are continuing to increase at a steady rate due to the economic emergence of many countries and the development of new technologies. Metal and cement usage has doubled since the beginning of the 21st Century and this production, between now and 2050, will be equivale...

Objective: Sustained evidence from observational studies indicates that after remission of Cushing syndrome (CS) a cardiovascular risk phenotype persists. Here, we performed a translational study in active CS and CS in remission (RCS) to evaluate the subclinical cardiometabolic burden and to explore the direct pro-inflammatory and prothrombotic po...

Cushing syndrome (CS), an endogenous hypercortisolemic condition with increased cardiometabolic morbidity, leads to development of abdominal obesity, insulin resistance, diabetes and proatherogenic dyslipidemia. Zinc alpha-2 glycoprotein (ZAG) is a recently characterized lipolytic adipokine implicated in regulation of adipose tissue metabolism and...

Introduction: Cushing syndrome (CS), an endogenous hypercortisolemic condition with increased cardiometabolic morbidity, leads to development of abdominal obesity, insulin resistance, diabetes and proatherogenic dyslipidemia. Zinc alpha-2 glycoprotein (ZAG) is a recently characterized lipolytic adipokine implicated in regulation of adipose tissue...

Purpose: Knowledge about compliance with recommendations derived from the positional statement of the European Society of Endocrine Surgeons on modern techniques in primary hyperparathyroidism surgery and the Third International Workshop on management of asymptomatic primary hyperparathyroidism is scarce. Our purpose was to check it on a bi-nation...

Background: We compared surgical outcomes of LigaSure™ Small Jaw, which is a multifunctional thermal device that incorporates a tissue divider versus LigaSure Precise™ in thyroid surgery. Methods: A retrospective, single-center study was carried out in an acute-care teaching hospital in Barcelona, Spain. Between January 2008 and June 2015, conse...

In recent years, several publications have shown that new adhesives and sealants, like Tissucol®, applied in thyroid space reduce local complications after thyroidectomies.

Background: In recent years, several publications have shown that new adhesives and sealants, like Tissucol(®), applied in thyroid space reduce local complications after thyroidectomies. Study aims: To demonstrate the effectiveness of fibrin glue Tissucol(®) in reducing the post-operative hospital stay of patients operated on for differentiated...

Background: We assessed the impact of complications on recurrence and survival after curative gastric cancer resection. Methods: Patients undergoing R0 resections between 1990 and 2009 were identified in a prospectively maintained database and were categorized by presence of any complication Clavien-Dindo (CD) ≥ II, sepsis or intra-abdominal sepsis...

Most surgeons have rapidly accepted the use of minimally invasive surgical approaches for the treatment of primary hyperparathyroidism. The role of the endoscope in neck surgery is still being discussed due to its technical difficulty and complex patient selection criteria. A prospective study was conducted between April 2010 and April 2013. It inc...

Individuals with autosomal dominant polycystic kidney disease (ADPKD) frequently suffer arterial hypertension even prior to significant loss of renal function, a clinical situation that obscures detection of modifiable secondary causes of hypertension. A 50-year-old man with ADPKD and polycystic liver and resistant hypertension is diagnosed with a...

Background: Single incision laparoscopic surgery (SILS) has still not replaced conventional laparoscopic surgery in many centers because of its special instruments requirements and training needs. In our Institution we introduced SILS procedures in a procedural stepwise manner, with progression to more difficult procedures only allowed if complete...

Background: Laparoscopic adrenalectomy by 3 or 4 trocars is a well-established procedure. This report describes the initial experience with single-incision laparoscopic surgery (SILS) using the transperitoneal approach for left adrenalectomy. Methods: Between April 2010 and January 2013, all consecutive patients with adrenal masses who agreed to un...

Background: Laparoscopic adrenalectomy by 3 or 4 trocars is a well-established procedure. This report describes the initial experience with single-incision laparoscopic surgery (SILS) using the transperitoneal approach for left adrenalectomy. Methods: Between April 2010 and January 2013, all consecutive patients with adrenal masses who agreed to un...

Somatostatin receptors (ssts) are expressed in thyroid cancer cells, but their biological significance is not well understood. The aim of this study was to assess ssts in well differentiated (WDTC) and poorly differentiated thyroid cancer (PDTC) by means of imaging and molecular tools and its relationship with the efficacy of somatostatin analog tr...

The introduction of laparoscopic surgery (LS) can be considered the most important advancement in our specialty in the past 25 years. Despite its advantages, implementation and consolidation has not been homogenous, especially for advanced techniques. The aim of this study was to analyse the level of development and use of laparoscopic surgery in S...

We assessed the results of adrenalectomy for solid tumor metastases in 317 patients recruited from 30 European centers. Patients with histologically proven adrenal metastatic disease and undergoing complete removal(s) of the affected gland(s) were eligible. Non-small cell lung cancer (NSCLC) was the most frequent tumor type followed by colorectal a...

We describe the first clinical case of a total extraperitoneal hernioplasty combined with intestinal resection assisted by laparoscopy for a strangulated Richter femoral hernia. The patient was a 94-year-old woman admitted to the emergency room with signs and symptoms of acute small bowel obstruction. Diagnosis of a strangulated left Richter femora...

Single-incision laparoscopic surgery (SILS) for cholecystectomy is a well-established procedure and represents the next step in developing the concept of fast track surgery. This report describes our experience with SILS cholecystectomy in patients that stay overnight. Between February 2009 and July 2010, patients referred for cholecystectomy to th...

Laparoscopic adrenalectomy via three or four trocars is a well-established procedure. This report describes the initial experience with single-incision laparoscopic surgery (SILS) using the transperitoneal approach for left adrenalectomy. Between April 2010 and August 2011, all consecutive patients with adrenal masses, including Conn's syndrome, Cu...

Laparoscopic cholecystectomy via the three-trocar technique is widely used for symptomatic gallbladder stones. Single-incision laparoscopic surgery (SILS) for cholecystectomy is a well-established procedure and represents the next step in developing the concept of mini-invasive surgery. We here described our 24-month experience SILS cholecystectomy...

At the present time, and given the increasing concern about body image, laparoscopic surgeons are faced with an increasing number of patients who want to conserve the umbilicus free of scars for cosmetic reasons. Single-incision laparoscopic surgery (SILS) using the suprapubic approach for appendectomy, while keeping the advantages of SILS through...

Background and objective: Laparoscopic appendectomy for acute appendicitis is a widely used procedure. Three or more trocars are normally required. We present our early experience performing appendectomy by means of single-incision laparoscopic surgery (SILS) for acute appendicitis. Methods: Prospective study from December 2008 to October 2009 in p...

INTRODUCCIÓN: La apendicectomía laparoscópica es un procedimiento ampliamente utilizado en el tratamiento de la apendicitis aguda, que normalmente necesita tres o más trócares para poder llevarse a cabo. Presentamos nuestra experiencia inicial en la apendicectomía por laparoscopia con una sola incisión umbilical (SILS). MÉTODO: Estudio prospectivo...

Tumour vascular endothelial growth factor (VEGF) and tumour urokinase-type plasminogen activator (uPA) are prognostic factors in gastric cancer but surgical specimens are required for testing. The prognostic value of preoperative serum VEGF (s-VEGF) and serum uPA (s-uPA) levels was evaluated in patients undergoing potentially curative (R0) gastric...

Laparoscopic appendectomy via the three-trocar technique is widely used for appendectomy. This report describes the initial experience with laparoendoscopic single-site surgery (LESS) appendectomy. Between December 2008 and March 2009, patients with acute appendicitis admitted to the General Surgery and Emergency Unit of the authors' institution wh...

Laparoscopic cholecystectomy via the three-trocar technique is widely used for symptomatic gallbladder stones. In this article, we describe the initial experience with laparoendoscopic single-site surgery (LESS) cholecystectomy. Between February and April 2009, patients referred for cholecystectomy to the General Surgery Unit of our institution who...

Angiopoietin-2 (Ang-2) and vascular endothelial growth factor (VEGF) contribute to gastric cancer aggressiveness by up-regulating the expression of proteases. We evaluated the expression and the prognostic significance of angiogenic factors and proteases in 148 patients with R0-resected gastric cancer. Expression of VEGF, Ang-2, cyclooxygenase-2 (C...

The population over 65 years old represents 40-50% of the all visits made to an emergency department (ED). Some situations of stress and dehumanization can occur due to user overflow. Our target is to identify factors influencing overall satisfaction of patients older than 65 attended in the ED, in order to identify points of conflict and improve t...

Introduction The population over 65 years old represents 40-50% of the all visits made to an emergency department (ED). Some situations of stress and dehumanization can occur due to user overflow. Our target is to identify factors influencing overall satisfaction of patients older than 65 attended in the ED, in order to identify points of conflict...

We investigated the change of prognosis in resected gastric cancer (RGC) patients and the role of radical surgery and adjuvant chemotherapy. We retrospectively analyze the outcome of 426 consecutive patients from 1975 to 2002, divided into 2 time-periods (TP) cohort: Before 1990 (TP1, n = 207) and 1990 or after (TP2; n= 219). Partial gastrectomy an...

Laparoscopic fundoplication is the gold standard surgical treatment for gastroesophageal reflux disease, although some patients develop recurrence or collateral symptoms related to surgery. The aims of this study were to describe the long-term symptoms control in patients undergoing laparoscopic fundoplication, to analyze the patterns of failure an...