Diagnostic criteria and surgical procedure for megaesophagus--a personal experience

Achalasia: what to do in the face of failures of Heller myotomy

Achalasia is a primary motility disorder of the esophagus, and while there are several treatment options, there is no consensus regarding them. When therapeutic intervention for achalasia fails, a careful evaluation of the cause of the persistent or recurrent symptoms using upper endoscopy, esophageal manometry, and contrast radiologic studies is required to understand the cause of therapy failure and guide plans for subsequent treatment. Options for reintervention are the same as for primary intervention and include pneumatic dilation, botulinum toxin injection, peroral endoscopic myotomy, or redo esophageal myotomy. When reintervention fails or if the esophagus is not amenable to intervention and the disease is considered end-stage, esophagectomy is the last option to manage recurrent achalasia.

The 2018 ISDE achalasia guidelines

Achalasia is a relatively rare primary motor esophageal disorder, characterized by absence of relaxations of the lower esophageal sphincter and of peristalsis along the esophageal body. As a result, patients typically present with dysphagia, regurgitation and occasionally chest pain, pulmonary complication and malnutrition. New diagnostic methodologies and therapeutic techniques have been recently added to the armamentarium for treating achalasia. With the aim to offer clinicians and patients an up-to-date framework for making informed decisions on the management of this disease, the International Society for Diseases of the Esophagus Guidelines proposed and endorsed the Esophageal Achalasia Guidelines (I-GOAL). The guidelines were prepared according the Appraisal of Guidelines for Research and Evaluation (AGREE-REX) tool, accredited for guideline production by NICE UK. A systematic literature search was performed and the quality of evidence and the strength of recommendations were graded according to the Grading of Recommendations Assessment, Development and Evaluation (GRADE). Given the relative rarity of this disease and the paucity of high-level evidence in the literature, this process was integrated with a three-step process of anonymous voting on each statement (DELPHI). Only statements with an approval rate >80% were accepted in the guidelines. Fifty-one experts from 11 countries and 3 representatives from patient support associations participated to the preparations of the guidelines. These guidelines deal specifically with the following achalasia issues: Diagnostic workup, Definition of the disease, Severity of presentation, Medical treatment, Botulinum Toxin injection, Pneumatic dilatation, POEM, Other endoscopic treatments, Laparoscopic myotomy, Definition of recurrence, Follow up and risk of cancer, Management of end stage achalasia, Treatment options for failure, Achalasia in children, Achalasia secondary to Chagas' disease.

Esophageal Resection for End-Stage Achalasia

Achalasia is a rare disease characterized by impaired lower esophageal sphincter relaxation loss and of peristalsis in the esophageal body. Endoscopic balloon dilation and laparoscopic surgical myotomy have been established as initial treatment modalities. Indications and outcomes of esophagectomy in the management of end-stage achalasia are less defined. A literature search was conducted to identify all reports on esophagectomy for end-stage achalasia between 1987 and 2017. MEDLINE, Embase, and Cochrane databases were consulted matching the terms “achalasia,” “end-stage achalasia,” “esophagectomy,” and “esophageal resection.” Seventeen articles met the inclusion criteria and 1422 patients were included in this narrative review. Most of the patients had previous multiple endoscopic and/or surgical treatments. Esophagectomy was performed through a transthoracic (74%) or a transhiatal (26%) approach. A thoracoscopic approach was used in a minority of patients and seemed to be safe and effective. In 95 per cent of patients, the stomach was used as an esophageal substitute. The mean postoperative morbidity rate was 27.1 per cent and the mortality rate 2.1 per cent. Symptom resolution was reported in 75 to 100 per cent of patients over a mean follow-up of 43 months. Only five series including 195 patients assessed the long-term follow-up (>5 years) after reconstruction with gastric or colon conduits, and the results seem similar. Esophagectomy for end-stage achalasia is safe and effective in tertiary referral centers. A thoracoscopic approach is a feasible and safe alternative to thoracotomy and may replace the transhiatal route in the future.

Recurrent respiratory distress and cardiopulmonary arrest caused by megaoesophagus secondary to achalasia

INTRODUCTION

Respiratory distress and arrest from tracheal compression secondary to megaoesophagus are rare complications of achalasia. We present the case of a man with end-stage achalasia who required oesophagectomy to prevent recurrent life-threatening tracheal compression and respiratory arrest. A literature review is also presented.

PRESENTATION OF CASE

A 40-year old man presented with post-prandial stridor which resolved spontaneously, later being diagnosed with achalasia. He underwent pneumatic dilatation year later, intended as definitive treatment. Despite intervention, the patient had developed megaoesophagus. One month later he presented with tracheal compression and cardiorespiratory arrest but was successfully resuscitated. He subsequently underwent elective oesophagectomy.

DISCUSSION

Over 40 case reports of achalasia presenting with stridor have been published. However, only three cases (all female, age range, 35-79 years old) of cardiac, respiratory or cardiorespiratory arrest have been published. The definitive treatments received by these patients were botulinum toxin injections, open Heller cardiomyotomy with Dor fundoplication and pneumatic dilatation. None of these patients suffered recurrent respiratory distress following definitive treatment. The patient currently reported was unique as he suffered cardiorespiratory arrest following an intended definitive treatment, pneumatic dilatation. As such oesophagectomy was considered the greatest risk-reduction intervention.

CONCLUSION

Oesophagectomy should be considered for patients with end-stage achalasia and mega-oesophagus causing respiratory compromise to avoid potential fatal complications such as tracheal compression and subsequent respiratory arrest.

Endoscopic classifications of esophageal changes in chagasic megaesophagus

The objective of this report is to propose a classification of endoscopic changes for chagasic megaesophagus based on macroscopic findings. Thirty patients with advanced megaesophagus surgically treated using the Doria Serra technique (1968)3 were enrolled in this quasi-randomized study. All participants were treated in the Surgical Department of Hospital de Base of the Medicine School in São José do Rio Preto (FAMERP), Brazil from January 1995 to December 1999. The ages of the 17 male (56.6%) and 13 female (43.3%) patients ranged from 38 to 71 years. All participants were submitted to esophagogastroduodenal endoscopy with the following classification being proposed: mild, moderate and severe esophagitis. The current study demonstrates a correlation between the classifications of endoscopic changes and the degree of histological alterations of the esophageal mucosa in chagasic megaesophagus. Thus, this is a novel option for endoscopic evaluation of patients with this disease.

Oesophagectomy in the management of end-stage achalasia - case reports and a review of the literature

Achalasia is an oesophageal motility disorder characterised by aperistalsis and failure of relaxation of a hypertensive lower oesophageal sphincter. Treatment intent targets the sphincter, and either Heller's myotomy or pneumatic dilatation successfully relieves dysphagia in the majority of cases. End-stage achalasia, typified by a massively dilated and tortuous oesophagus, may occur in patients previously treated but where further dilatation or myotomy fails to relieve dysphagia or prevent nutritional deterioration, and oesophagectomy may be the only option. We describe two patients with end-stage achalasia and nutritional failure despite exhaustive conventional therapy including pneumatic dilatation and surgical myotomy. Both patients were successfully managed with transhiatal oesophagectomy and cervical gastro-esophageal anastomosis, with excellent symptomatic control and improved quality of life. These cases are discussed and the literature reviewed.