Herniation of the transverse colon after esophagectomy: is retrocardiac air a normal postoperative finding?

Diaphragmatic hernia following oesophagectomy for oesophageal cancer - Are we too radical?

BACKGROUND

Diaphragmatic herniation (DH) of abdominal contents into the thorax after oesophageal resection is a recognised and serious complication of surgery. While differences in pressure between the abdominal and thoracic cavities are important, the size of the hiatal defect is something that can be influenced surgically. As with all oncological surgery, safe resection margins are essential without adversely affecting necessary anatomical structure and function. However very little has been published looking at the extent of the hiatal resection. We aim to present a case series of patients who developed DH herniation post operatively in order to raise discussion about the ideal extent of surgical resection required.

METHODS

We present a series of cases of two male and one female who had oesophagectomies for moderately and poorly differentiated adenocarcinomas of the lower oesophagus who developed post-operative DH. We then conducted a detailed literature review using Medline, Pubmed and Google Scholar to identify existing guidance to avoid this complication with particular emphasis on the extent of hiatal resection.

DISCUSSION

Extended incision and partial resection of the diaphragm are associated with an increased risk of postoperative DH formation. However, these more extensive excisions can ensure clear surgical margins. Post-operative herniation can be an early or late complication of surgery and despite the clear importance of hiatal resection only one paper has been published on this subject which recommends a more limited resection than was carried out in our cases.

CONCLUSION

This case series investigated the recommended extent of hiatal dissection in oesophageal surgery. Currently there is no clear guidance available on this subject and further studies are needed to ascertain the optimum resection margin that results in the best balance of oncological parameters vs. post operative morbidity.

Incidence of diaphragmatic hernias following minimally invasive versus open transthoracic Ivor Lewis McKeown esophagectomy

OBJECTIVES

To compare the incidence of post-operative hiatal herniation after open and minimally invasive Ivor Lewis McKeown esophagectomy for malignant disease.

METHODS

All patients undergoing esophageal resection were entered into a prospectively maintained database. After Institutional Review Board approval, the database was queried to identify patients who underwent minimally invasive (MIE) and open transthoracic (TTE) Ivor Lewis McKeown esophagectomy (transthoracic three-hole) with gastric pull-up for malignant disease. The cohorts were compared for the incidence of hiatal hernia on routine CT scan for cancer surveillance. Data up to 24 months post-operatively was included. Patients undergoing trans-hiatal or hybrid procedures as well as intra-thoracic anastomosis were excluded as were patients in whom jejunum or colon was used for reconstruction.

RESULTS

Between 2003 and 2009, 19 MIEs and 20 open TTEs met the inclusion criteria. There was no significant difference in age, co-morbidity, pathology or perioperative morbidity and mortality between the two groups. During routine follow-up, para-gastric hiatal hernia was noted on CT scan in 5(26%) patients following MIE at a mean of 13.8 months postoperatively, with incidence ranging from 3 to 20 months postoperatively (19, 20, 18, 3, and 9 months, respectively). Hernia contents in these patients were omentum in one case and colon in the other four cases. None of the patients undergoing TTE were noted to have herniation (P = 0.01). All hernias were asymptomatic; three were repaired electively.

CONCLUSIONS

There was a significantly higher incidence of para-gastric hiatal hernia after Ivor Lewis McKeown minimally invasive esophagectomy compared to similar open procedures. Additional precautions to prevent para-gastric hernia should be taken during laparoscopic resection.

Imaging of diaphragmatic rupture after trauma

Traumatic rupture of the diaphragm usually results from blunt or penetrating injuries, or iatrogenic causes. Most cases are initially overlooked in the acute phase because they present with variable clinical and radiological signs. An overlooked diaphragmatic injury presents as a hernia many years later with potentially serious complications, therefore selection of the most appropriate radiological technique and accurate diagnosis of traumatic diaphragmatic hernias (DH) on the first admission is important. Although the diagnosis of diaphragmatic injuries is problematic, various investigations may be used for diagnosis. We describe the imaging findings of 19 traumatic DH cases with various imaging techniques. The patients were acute trauma cases or cases with prior trauma or thoraco-abdominal surgery with clinical suspicion of DH. An evaluation of the imaging techniques used in the diagnosis of DH is presented.

Diaphragmatic hernia: diagnostic approaches with review of the literature

Because surgical repair is indicated for the treatment of diaphragmatic hernia (DH), preoperative imaging of the diaphragmatic defect, hernia content, and associated complications with other organ's pathologies is important. While various techniques can be used on imaging of DHs, selection of the most effective but the least invasive technique will present the most accurate findings about DH, and will facilitate the management of DH. We reviewed the diaphragmatic hernia types associated with our cases, and we discussed the preferred imaging modalities for different DHs with review of the literature. We evaluated the imaging findings of 21 DH cases. They were Morgagni's hernia (n=4), Bochdalek hernia (n=2), iatrogenic DH (n=4), traumatic DH (n=6), and hiatal hernia (n=5). Although its limited findings on DH and indirect findings about the diaphragmatic rupture, plain radiography is firstly preferred technique on DH. We found that ultrasound (US) is a useful tool on DH, on traumatic DH cases especially. Not only it shows diaphragmatic continuity and herniated organs, but also it reveals associated abdominal organ's pathologies. Computed tomography (CT) scan is most effective in many DH cases. It shows the herniated abdominal organs together with complications, such as intestinal strangulation, haemothorax, and rib fractures. We stressed that Multislice CT scan with coronal and sagittal reformatted images is the most effective and useful imaging technique on DH. With high sensitivity for soft tissue, MR imaging may be performed in the selected patients, on the late presenting DH cases or on the cases of the diagnosis still in doubt especially.

Caractéristiques des hernies diaphragmatiques après œsophagectomie pour cancer

INTRODUCTION

Diaphragmatic hernia is a rare complication of oesophagectomy for cancer. We report a series of seven patients to determine characteristics of this entity.

PATIENTS AND METHODS

Seven patients (six male and one female, 61 to 68 years old) were operated on for diaphragmatic hernia following oesophagectomy for carcinoma (adenocarcinoma N =4, squamous-cell carcinoma N =3). Oesophagectomy had been performed through abdominal transhiatal approach in four patients and transthoracically in three, with hiatal enlargement in all cases.

RESULTS

Three patients, all symptomatic, underwent emergency surgery within two years following oesophagectomy. Of the four patients operated between two and seven years after oesophagectomy, two were symptomatic. Presence of symptoms were neither related with technique of oesophagectomy, nor to type of hiatal enlargement (anterior, or by crura division). All patients with hernia containing small bowel were symptomatic. All patients were operated through abdominal approach. Hernia contained colon three times, small bowel once, and both three times. Hernia reduction needed additional phrenotomy in six patients. Two patients underwent colectomy to treat peroperative colonic ischemia. Diaphragmatic hiatus was calibrated around the gastric tube by direct suture in six patients or with absorbable mesh in one. There was no death. No recurrences occurred with a follow up ranging from one to five years.

CONCLUSION

The diaphragmatic hernia after oesophagectomy is due to excessive hiatal enlargement. Hernias occurring early after oesophagectomy are badly tolerated and need urgent reoperation. To prevent this complication of oesophagectomy, we advocate calibration of diaphragmatic hiatus fit to width of gastroplasty.

Diaphragmatic Hernia after Ivor-Lewis Esophagectomy Manifested as Lower Gastrointestinal Bleeding

Diaphragmatic hernia after esophageal resection is a recognized but rare complication. Parahiatal hernias may result from manipulation and extension of the crura during surgery. This can lead to a wide array of symptoms depending on the extent and organ that is herniated. A high index of suspicion is required because there is no one symptom that is specific for herniation. This report represents the first case of a patient presenting with lower gastrointestinal bleed from a parahiatal hernia after esophageal resection.