Underwater versus conventional EMR of large nonpedunculated colorectal lesions: a multicenter randomized controlled trial.

BACKGROUND AND AIMS: Underwater EMR (UEMR) is an alternative procedure to conventional EMR (CEMR) to treat large, nonpedunculated colorectal lesions (LNPCLs). In this multicenter, randomized controlled clinical trial, we aimed to compare the efficacy and safety of UEMR versus CEMR on LNPCLs. METHODS: We conducted a multicenter, randomized controlled clinical trial from February 2018 to February 2020 in 11 hospitals in Spain. A total of 298 patients (311 lesions) were randomized to the UEMR (n = 149) and CEMR (n = 162) groups. The main outcome was the lesion recurrence rate in at least 1 follow-up colonoscopy. Secondary outcomes included technical aspects, en bloc resection rate, R0 resection rates, and adverse events, among others. RESULTS: There were no differences in the overall recurrence rate (9.5% UEMR vs 11.7% CEMR; absolute risk difference, -2.2%; 95% CI, -9.4 to 4.9). However, considering polyp sizes between 20 and 30 mm, the recurrence rate was lower for UEMR (3.4% UEMR vs 13.1% CEMR; absolute risk difference, -9.7%; 95% CI, -19.4 to 0). The R0 resection showed the same tendency, with significant differences favoring UEMR only for polyps between 20 and 30 mm. Overall, UEMR was faster and easier to perform than CEMR. Importantly, the techniques were equally safe. CONCLUSIONS: UEMR is a valid alternative to CEMR for treating LNPCLs and could be considered the first option of treatment for lesions between 20 and 30 mm due to its higher en bloc and R0 resection rates. (Clinical trial registration number: NCT03567746.).

Angiosarcoma de aorta diagnosticado mediante ecoendoscopia / Angiosarcoma of the aorta diagnosed via endoscopic ultrasound

Varón de 54 años que consulta por lumbalgia de 5 semanas de evolución refractaria a analgésicos habituales y pérdida de peso significativa. El PET-TAC evidenció una masa retroperitoneal en contacto con la pared anterior de la aorta abdominal. Tras comentarlo con la Unidad de Endoscopias, se decide realizar ecoendosocopia y PAAF por la accesibilidad y el carácter menos invasivo con resultado anatomopatológico de angiosarcoma de aorta. (AU)

Angiosarcoma of the aorta diagnosed via endoscopic ultrasound.

A 54-year-old man consulted for low back pain of 5 weeks of evolution, refractory to regular analgesics, and significant weight loss. The PET-CT revealed a retroperitoneal mass in contact with the anterior wall of the abdominal aorta. After consulting with the Endoscopy Unit, an endoscopic ultrasound-guided FNAP was performed due to the accessibility of the lesion and the less invasive nature of these procedures. The anatomopathological result was angiosarcoma of the aorta.

Location, morphology and invasiveness of lateral spreading tumors in the colorectum differ between two large cohorts from an eastern and western country.

BACKGROUND AND STUDY AIMS: Data from Japanese series show that surface morphology of laterally spreading tumors (LST) in the colon identifies lesions with different incidence and pattern of submucosal invasion. Such data from western countries are scarce. We compared clinical and histological features of LST in a western country and an eastern country, with special interest on mucosal invasiveness of LST, and investigated the effect of clinical factors on invasiveness in both countries. PATIENTS AND METHODS: Patients with LST lesions ≥20mm were included from a multicenter prospective registry in Spain and from a retrospective registry from the National Cancer Center Hospital East, Japan. The primary outcome was the presence of submucosal invasion in LST. The secondary outcome was the presence of high-risk histology, defined as high-grade dysplasia or submucosal invasion. RESULTS: We evaluated 1102 patients in Spain and 663 in Japan. Morphological and histological characteristics differed. The prevalence of submucosal invasion in Japan was six-fold the prevalence in Spain (Prevalence Ratio PR=5.66; 95%CI: 3.96, 8.08), and the prevalence of high-risk histology was 1.5 higher (PR=1.44; 95%CI: 1.31, 1.58). Compared to the granular homogeneous type and adjusted by clinical features, granular mixed, flat elevated, and pseudo-depressed types were associated with higher odds of submucosal invasion in Japan, whereas only the pseudo-depressed type showed higher risk in Spain. Regarding high-risk histology, both granular mixed and pseudo-depressed were associated with higher odds in Japan, compared with only the granular mixed type in Spain. CONCLUSION: This study reveals differences in location, morphology and invasiveness of LST in an eastern and a western cohort.

Managing esophageal strictures following endoscopic resection of superficial neoplastic lesions.

Over the last few years early esophageal tumors, whether squamous-cell or associated with Barrett's esophagus, have been excised using endoscopic resection techniques, primarily endoscopic submucosal dissection (ESD). Esophageal surgery-associated morbidity and mortality are thus avoided with similar oncologic outcomes. ESD is not without complications, many of which arise and are endoscopically solved during the procedure itself (bleeding, perforation, etc.). Other complications develop within days or weeks after resection, these including mainly esophageal stricture. Esophageal strictures following ESD are initially managed with endoscopic balloon dilation (EBD). Preventive measures have been suggested to alleviate this complication, primarily by using local or systemic steroids in association with early dilation. Even so, not always may they be prevented. Such complications are called refractory strictures, which require either esophageal stents (in a majority of cases) or surgery.

Sistemas de cierre endoscópicos para perforaciones, fístulas y fugas. ¿En manos expertas o en todas las unidades de endoscopias? / No disponible

No disponible

Endoscopic closure systems for perforations, fistulas, and leaks. In expert hands or in all endoscopy units?

Improvement and innovation have been ongoing in gastrointestinal (GI) endoscopy for the last few years, including highly maneuverable endoscopes, high-definition visualization, digital chromoendoscopy, and wide working channels, which allow a correct identification, catheterization, and delimitation of early neoplastic lesions. Technological innovation has also provided novel devices, both to perform treatments and prevent complications.

Tratamiento endoscópico no quirúrgico del vólvulo gástrico en pacientes con riesgo quirúrgico extremo / Nonsurgical endoscopic treatment of gastric volvulus in extremely high-risk surgical patients

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Nonsurgical endoscopic treatment of gastric volvulus in extremely high-risk surgical patients.

Gastric volvulus is a rare entity that occurs as a consequence of a rotation of the stomach of more than 180°, with gastric outlet obstruction and vascular compromise. It occurs secondary to diaphragmatic defects in most cases and is mainly reported in elderly patients who are fragile and present severe associated comorbidities. Here we present a nonsurgical treatment with the use of a single percutaneous endoscopic tube to perform gastropexy in patients with a high risk for surgery or inoperable patients. We present two cases that show that this therapeutic option is viable, with acceptable results under very specific clinical conditions.

Anastomosis gastroyeyunal con separación gástrica parcial frente al tratamiento endoscópico para el tratamiento del síndrome de obstrucción antroduodenal de causa maligna / Stomach-partitioning gastrojejunostomy versus stent placement for the treatment of malignant gastric outlet obstruction

Introducción: El síndrome de obstrucción antroduodenal es una complicación presente en neoplasias avanzadas. Se caracteriza por clínica de obstrucción gastrointestinal alta, con desnutrición progresiva, y se asocia con una disminución de la supervivencia. La derivación mediante gastroyeyunostomía y el tratamiento endoscópico (TE) son las alternativas para el tratamiento del síndrome de obstrucción antroduodenal. El objetivo de este estudio es comparar la eficacia y la supervivencia de ambas. Métodos: Estudio monocentro, observacional y prospectivo de 58 pacientes con síndrome de obstrucción antroduodenal que recibieron tratamiento quirúrgico mediante gastroyeyunostomía con separación gástrica parcial (GYSGP) o TE con prótesis enterales autoexpandibles entre los años 2007-2018. Resultados: A 30 pacientes se les realizó GYSGP y a 28 pacientes TE. La edad media de los pacientes con GYSGP fue significativamente menor (69 vs. 78 años, p = 0,001). No hubo diferencias en cuanto al sexo, el riesgo anestésico-quirúrgico ni la etiología de la neoplasia. Las complicaciones posprocedimiento fueron superiores, aunque no significativas, en el grupo de GYSGP (p = 0,156). El TE se asoció con una menor estancia hospitalaria (p = 0,02) y una mayor precocidad de la tolerancia oral (p < 0,0001). Sin embargo, los pacientes presentaron tasas más altas de obstrucción persistente y recurrente (p = 0,048 y 0,01, respectivamente), unos peores objetivos energéticos (p = 0,009) y una supervivencia menor (9,61 vs. 4,47 meses, p = 0,008). Conclusiones: La GYSGP obtiene una mayor permeabilidad luminal, una mejor tolerancia a la vía oral y una mayor supervivencia. El TE estaría recomendado para pacientes no subsidiarios de la cirugía con un pronóstico limitado a corto plazo

Introduction: Gastric outlet obstruction is a complication of advanced tumors. It causes upper gastrointestinal obstruction, with progressive malnutrition and reduced survival. Currently, gastrojejunostomy or stent placement (SP) are feasible alternatives for the treatment of malignant gastric outlet obstruction. The aim of this study is to compare the efficacy and survival of both techniques. Methods: Single-center observational and prospective study of 58 patients with gastric outlet obstruction who underwent surgical treatment with stomach-partitioning gastrojejunostomy (SPGJ) or SP with self-expanding intraluminal prostheses between 2007 and 2018. Results: Thirty patients underwent SPGJ and 28 SP. The mean age of the first group was significantly lower (69 vs. 78 years, respectively; P = .001). There were no statistically significant differences in terms of sex, perioperative risk or tumor etiology. Postoperative complications were non-significantly higher in the SPGJ group (P = .156). SP was associated with a shorter hospital stay (P = .02) and faster oral intake (P < .0001). However, SP had significantly higher rates of persistent and recurrent obstruction (P = .048 and .01, respectively), poorer energy targets (P=.009) and shorter survival (9.61 vs. 4.47 months; P = .008). Conclusions: SPGJ presents greater luminal permeability, better oral intake and greater survival than SP. SP is preferable for non-surgical patients with a limited short-term prognosis