Metanephric Adenoma Associated with Unusual Urinary Candidiasis: A Challenging Morbidity from Postoperative Anastomotic Leak

Metanephric adenoma (MA) of the kidney is a rare benign neoplasm, which is mostly incidental-discovered during imaging studies for other clinical problems. However, this tumor may overlap in morphology with the papillary renal cell carcinoma and there are descriptions of metastatic disease. To date, fewer than 200 cases of MA have been reported worldwide and usually have a good prognosis. In the current report, a case of MA in a middle-aged lady is presented, which developed postoperative morbidity resulting from prolonged perinephric leakage secondary to urinary and perinephric fungus infection as a part of systemic candidiasis. The clinical, morphological and immunohistochemical features are presented together with a review of the current literature.

Delayed Anastomotic Failure After Chemoradiation: A Delay in Diagnosis or Late Presentation? - A Case Series

Anastomotic leak after colorectal surgery can result in serious morbidity for certain patients. The rate of clinically significant anastomotic leak after colon resection ranges from 1.8% to 11.9%. Risk factors include male sex, steroids, smoking, perioperative blood transfusion, malnutrition, and a low anastomosis. However, the effect of pre-operative chemoradiation therapy (CRT) on rates of anastomotic leak is controversial. Specifically, late leaks, which are defined as those that occur greater than 30 days after surgery, are sparsely described in current literature. Recent evidence suggests that CRT may contribute to the presentation of late anastomotic leaks. In this case series, we report our experience with three patients who received CRT and developed varying presentations of a late anastomotic leak. Therefore, our experience supports the consideration of late anastomotic leaks as a separate entity in colorectal surgery. While pre-operative CRT may increase risk for postoperative anastomotic leak overall, further exploration into the relationship between preoperative CRT and late anastomotic leaks is warranted.

P221 Crohn’s disease patients unable to complete preoperative mechanical bowel preparation have increased risk of anastomotic complications: results of a prospective observational study

Background To assess the risk of postoperative anastomotic leak in Crohn’s disease patients unable to complete the preoperative mechanical bowel preparation (MBP): a prospective observational study from two referral centers in Germany and the Czech Republic. Methods Preoperative MBP was used routinely in all Crohn’s disease patients undergoing elective ileocolic or colorectal resections completed by formation of an anastomosis since 6/2016. The MBP consisted of 2 L Polyethyleneglycol (PEG) solution combined with two doses of oral antibiotics Metronidazole/Paramomycin or Metronidazole/Neomycine. The MBP was defined as incomplete when patients were not able to drink the whole amount of PEG solution due to side effects or complications. The primary endpoint was the occurrence of anastomotic leak. The secondary endpoint was the incidence of postoperative intra-abdominal septic complications (IASC) which were defined as anastomotic leak, intra-abdominal abscess, fistula or peritonitis. Results Between 6/2016 and 3/2021, 157 Crohn’s disease patients underwent elective ileocolic or colorectal resections after receiving preoperative MBP and oral antibiotics. Forty (26%) developed complications from the MBP, mostly vomiting; twenty-nine patients (18.5%) were not able to complete the MBP. Female sex (HR 4.2, p=0.016) was associated with an increased probability of not being able to complete the MBP. Postoperative anastomotic leak occurred in 5 patients (3%). In a multivariate analysis, the risk of anastomotic leak was significantly higher in patients unable to complete the MBP (10.5%), as compared to patients with complete MBP (1.6%, p=0.01, HR 21.0). Postoperative IASC occurred in 7 patients (7%). Patients unable to complete preoperative MBP were at higher risk of developing IASC. However, the difference was not statistically significant (14% vs. 5%, p=0.12). Conclusion The anastomotic leak rate was low when preoperative MBP and oral antibiotics were used. However, patients not able to complete MBP might be at an increased risk.

Does Radiation Dose to Gastric Fundus during Neoadjuvant Chemoradiotherapy for Esophageal Carcinoma Have an Impact on Postoperative Anastomotic Leak?

Background: Radiation dose received by the gastric fundus (GF) in neoadjuvant chemoradiotherapy (NACRT) may influence the development of postoperative anastomotic leak (AL) in the management of resectable esophageal carcinoma (EC) by trimodality therapy. The present study aims to evaluate dose-volume parameters of the GF and their association with occurrence of AL in EC. Materials and Methods: A retrospective analysis was performed of 27 patients with EC who underwent NACRT followed by esophagectomy with cervical esophagogastric anastomosis between January 2015 and July 2018. The GF was retrospectively contoured; dose-volume parameters of the GF were recorded. Postoperative AL was identified from surgical records. Logistic regression analysis was used to identify risk factors associated with AL. Results: The mean age of the patients was 51 ± 10.5 years; 56% (15/27) had involvement of lower 1/3 esophagus, 10/27 (37%) midthoracic esophagus, and 2/27 (7%) upper thoracic esophagus; 40% (11/27) patients developed postoperative AL and 7/11 had distal and 4/11 had mid thoracic esophageal lesions. Four of five (80%) patients treated by 3-dimensional conformal radiotherapy versus 7/22 (32%) patients treated by volumetric modulated arc therapy developed AL (p = 0.12). Univariate logistic regression revealed no significant correlation between Dmean, Dmax, V20, V25, V30, V35, D50, and AL. 8/27 patients underwent ischemic preconditioning of gastric conduit, and 2/8 had AL; 19/27 did not undergo preconditioning, and 9/19 patients experienced AL (p = 0.4). Conclusion: There was no significant negative impact of the dose received by the GF in NACRT upon AL rates. Further studies with a larger sample size are required to clarify this issue.

A prospective study of 50 cases of laparoscopic intestinal anastomosis by Endo GIA universal loading stapler (green/blue) versus Endo GIA articulating reload with tri staple technology (purple)

Background: Intestinal anastomosis is a commonly performed procedure in surgery. Various evolvements have occurred in the field of intestinal anastomosis and recent advancement is the use of stapler in laparoscopic surgeries as a device for Gastrointestinal (GI) anastomosis. Few previous studies evaluating the clinical safety of the 2 laparoscopic linear stapling devices are available.Methods: A prospective comparative study of 50 cases which met the inclusion and exclusion criteria were included in this hospital-based study. They were randomly allocated to two groups, Group A which underwent laparoscopic intestinal anastomosis by Endo GIA tri-staple (purple) stapler and Group B which underwent Endo GIA universal loading unit (blue/green) stapler. Primary outcome was assessed in terms of intra-operative staple line bleeding, operative time and post-operative anastomotic leak.Results: Patients with laparoscopic intestinal anastomosis by Endo GIA tri-staple stapler (purple) have required less operation time as compared to Endo GIA universal loading unit. In Endo GIA universal loading unit (blue/green) 04% patients developed anastomotic leak and 40% patients had intra-operative staple line bleed while with Endo GIA tri-staple no postoperative anastomotic leak was found and 02% patients developed intra-operative staple line bleeding.Conclusions: The result of our study has shown that the Endo GIA reload tri- staple (purple) is superior in terms of having no anastomosis leak, negligent staple line bleeding and less operation time as compared with Endo GIA universal loading unit (blue/green). Thus, laparoscopic intestinal anastomosis by Endo GIA reload tri-staple stapler (purple) technology is more effective and overall more efficient.

Use of vasopressors during esophagectomy is not associated with increased risk of anastomotic leak

Summary Vasopressor use during esophagectomy has been reported to increase the risk of postoperative anastomotic leak and associated morbidity. We sought to assess the association between vasopressor use and fluid (crystalloid and colloid) administration and anastomotic leak following open esophagectomy. Patients who underwent open Ivor Lewis esophagectomy were identified from a prospective institutional database. The primary outcome was postoperative anastomotic leak (any grade) and analyzed using logistic regression models. Postoperative anastomotic leak developed in 52 of 327 consecutive patients (16%) and was not significantly associated with vasopressor use or fluid administered in either univariable or multivariable analyses. Increasing body mass index was the only significant characteristic of both univariable (P = 0.004) and multivariable analyses associated with anastomotic leak (odds ratio, 1.05; 95% confidence interval, 1.01–1.09; P = 0.007). Of the 52 patients that developed an anastomotic leak, 12 (23%) were grade 1, 21 (40%) were grade 2 and 19 (37%) were grade 3. In our cohort, only body mass index, and not intraoperative vasopressor use and fluid administration, was significantly associated with increased odds of postoperative anastomotic leak following open Ivor Lewis esophagectomy.

P557 Increased risk of anastomotic leak in Crohn’s disease patients unable to complete preoperative mechanical bowel preparation

Background To assess the risk of postoperative anastomotic leak in Crohn’s disease patients unable to complete the preoperative mechanical bowel preparation (MBP): a prospective observational study from two referral centres in Germany and the Czech Republic. Methods Preoperative MBP was used routinely in all Crohn’s disease patients undergoing elective ileocolic or colorectal resections completed by the formation of an anastomosis since 6/2016. The MBP consisted of 2 L Polyethyleneglycol (PEG) solution combined with two doses of oral antibiotics Metronidazole and Paromomycin. The MBP was defined as incomplete when patients were not able to drink the whole amount of PEG solution due to side effects or complications. The primary endpoint was occurrence of anastomotic leak. The secondary endpoint was the incidence of postoperative intraabdominal septic complications (IASC) which were defined as an anastomotic leak, intraabdominal abscess or fistula and peritonitis. Results Between 6/2016 and 11/2019, 96 Crohn’s disease patients underwent elective ileocolic or colorectal resections after receiving preoperative MBP and oral antibiotics. Twenty-four (25%) developed complications of MBP, mostly vomiting; 17 patients (18%) were not able to complete MBP. The presence of extraintestinal disease manifestations (Hazard Ratio 4.8, p = 0.029), preoperative weight loss (HR 5.7, p = 0.019) and female sex (HR 13.3, p = 0.005) were associated with an increased probability not to be able to complete MBP. Postoperative anastomotic leak occurred in 2 patients (2%). The risk of anastomotic leak was significantly higher in patients unable to complete MBP (12%) as compared with patients with complete MBP (0%, p = 0.03). Postoperative IASC occurred in 7 patients (7%). Patient unable to complete preoperative MBP were at higher risk to develop IASC; however, the difference was not statistically significant (18% vs. 5%, p = 0.10) Conclusion The anastomotic leak rate is very low when preoperative mechanical bowel preparation and oral antibiotics have been used. However, patients not able to complete MBP might be at an increased risk.