Skip to main content

Laparoscopic Heller myotomy and Dor fundoplication following an unsuccessful peroral endoscopic myotomy



Achalasia is an esophageal motility disorder that presents as dysphagia and severely affects quality of life. An esophageal myotomy has been the golden standard for treatment. Peroral endoscopic myotomy (POEM) as a first-line therapy has an acceptable outcome. However, after the clinical failure of POEM, appropriate second-line therapy is rather controversial. Here, we present the first published case in English of a patient who was successfully treated using laparoscopic Heller myotomy (LHM) with Dor fundoplication following an unsuccessful POEM.

Case presentation

A 64-year-old man with type 1 achalasia who had been previously treated with POEM visited our hospital for further treatment. After undergoing LHM with Dor fundoplication, his Eckardt score improved from 3 to 0 points. On a timed barium esophagogram (TBE), the barium height improved from 119 mm/119 mm (1 min/5 min) to 50 mm/45 mm. No significant complications have occurred postoperatively for 1 year.


Treating refractory achalasia is challenging, and treatment options are controversial. LHM with Dor fundoplication after POEM could be a safe and efficient option for the treatment of refractory achalasia.


Esophageal achalasia was first described in 1674 by Sir Thomas Willis as a constellation of dysphagia, the regurgitation of undigested food, respiratory symptoms, chest pain, and weight loss [1]. The disease prevalence is assumed to be 1 in 100,000 individuals [2]. From a pathophysiological perspective, esophageal achalasia has been described as a degeneration of the myenteric neurons of the lower esophageal sphincter (LES) [2]. Achalasia impairs patients’ quality of life and is incurable. Attaining a tolerable level of remission is the key to treatment. Treatment options include pneumatic dilation, botulinum toxin injection, myotomy, and medical therapy. A myotomy can be performed endoscopically or surgically. While all these options are essentially palliative, surgical myotomy, such as a laparoscopic Heller myotomy (LHM) with fundoplication, has been the golden standard for treatment with the best clinical success rate. The introduction of per-oral endoscopic myotomy (POEM) in 2007 enabled acceptable outcomes with a lower degree of invasiveness, and POEM has become a preferred treatment option [3, 4]. Presently, POEM is performed as the treatment of first choice at institutions where POEM is a feasible option [5]. However, even though the results of POEM are generally acceptable, the treatment of some patients can be incomplete [6]. Additional intervention is required for patients with incomplete POEM, and second-line options remain a matter of debate. Repeat POEM and LHM are both mainstream treatments following unsuccessful POEM. The efficacy and safety of these second-line procedures have been discussed in several papers previously. However, data and evidence remain insufficient because of the rarity of this condition. Thus, the sharing of treatment experiences and the provision of detailed clinical data are essential. This report is the first English publication describing an LHM with Dor fundoplication procedure following an unsuccessful POEM.

Case presentation

A 64-year-old man presented with dysphagia at a high-volume center for POEM in Japan. His previous medical history was of minimal significance except for the presence of well-controlled type 2 diabetes mellitus. He underwent POEM, which decreased his Eckardt score from 8 to 3 points. His symptoms were not alleviated to the expected extent, and he continued to suffer when eating solid foods, such as beef steak. He spontaneously visited our hospital for further surgical treatment 2 years after undergoing his initial POEM procedure.

Preoperative examinations were performed. An esophagogastroduodenoscopy (EGD) showed Grade B reflux esophagitis with long-segment Barrett’s esophagus (Fig. 1). A biopsy ruled out malignancy. A timed barium esophagogram (TBE) resulted in barium column heights at 1 min and 5 min of 119 mm and 119 mm, respectively (Fig. 2). Computed tomography showed an apparent dilation of the thoracic esophagus with no signs of malignancy. A 24-h esophageal multichannel intraluminal impedance and pH monitoring examination showed an acid exposure time (AET) of 8.2% and a DeMeester score of 24.5, indicating morbid reflux. High-resolution manometry (HRM) revealed a normal integrated relaxation pressure (IRP) of 13.6 mmHg and the absence of a peristaltic wave. These results were compatible with a diagnosis of Chicago type 1 achalasia complicated by post-POEM reflux esophagitis. Considering the lack of LES relaxation and the delayed esophageal outflow, the prior POEM was deemed to have been incomplete. The laboratory data showed no abnormalities, including tumor markers. As the patient was a candidate for an additional POEM, a repeat POEM was recommended [7]. However, the patient refused to undergo a repeat POEM because of a profound apprehension of another failure.

Fig. 1
figure 1

Esophagogastroduodenoscopy findings before the second treatment. a Los Angeles classification: Grade B. b Cardia before fundoplication

Fig. 2
figure 2

Timed barium esophagogram results before the second treatment: 119 mm in height at 1 min, and 119 mm at 5 min

After a thorough preoperative examination and evaluation, he underwent LHM with Dor fundoplication. Neither the previous doctor nor we prescribed proton pump inhibitors (PPIs) prior to the surgery. The operation was performed by an experienced surgeon using 5 ports. Some fibrotic changes in the posterior esophageal wall were present, possibly because of the prior POEM. As the chief complaint was difficulty swallowing, the fundoplication was performed in a manner that would guarantee food passage. The myotomy was completed 4 cm above and 2 cm below the esophagogastric junction. The operating time was 242 min, and the operative blood loss was 5 mL. The postoperative course was uncomplicated. Oral intake was resumed on postoperative day 2 after a TBE examination. The TBE barium height had improved to 50 mm/45 mm (Fig. 3). He was discharged on postoperative day 5 with vonoprazan 10 mg for prophylaxis of GERD. EGD showed improvement in reflux esophagitis (Fig. 4). At a 7-month postoperative visit to our outpatient clinic, he was asymptomatic and had an Eckardt score of 0 points.

Fig. 3
figure 3

Timed barium esophagogram results after the second treatment: 50 mm in height at 1 min, and 45 mm at 5 min

Fig. 4
figure 4

Esophagogastroduodenoscopy findings after the second treatment. a Los Angeles classification: Grade A. b Cardia after fundoplication


We treated a patient with type 1 achalasia who was successfully managed using LHM with Dor fundoplication as a salvage therapy after an unsuccessful POEM. The postoperative course was uncomplicated, the patient’s dysphagia improved, and reflux esophagitis did not worsen.

Treating refractory achalasia can be challenging. LHM and POEM are both considered first-line treatments. Nowadays, the treatment outcomes for achalasia patients are dichotomized according to the Eckardt score, which defines success as an Eckardt score ≤ 3 [8]. However, even in cases defined as successful based on their Eckardt score, a patient’s subjective symptoms can be sufficiently discomforting for them to seek additional treatment, as in the presently reported case. The treatments in such cases are considered clinical failures.

As initial treatments, the success rates of both LHM and POEM are sufficiently high (81.7% for LHM, 83% for POEM) [5]. Nevertheless, certain patients may experience clinical failure. Several studies have reported the success rates and adverse effects of different secondary treatments after unsuccessful POEM or LHM (Table 1) [9,10,11,12,13,14,15,16,17,18,19,20,21,22,23]. Unsuccessful LHM is generally followed by POEM because of the lower degree of invasiveness, and these secondary treatments have a high likelihood of success. On the other hand, the success rate after retreatment following an unsuccessful POEM ranges from 29 to 100%, making retreatment controversial. The major reasons for primary failure of LHM or POEM are incomplete myotomy and undesirable sclerosis in the vicinity of the myotomy site. Zaninotto et al. reported incomplete myotomy or sclerosis, especially at the distal site of the myotomy as the main reason for the failure of LHM [24]. On the other hand, to the best of our knowledge, the major etiology and location of the incomplete myotomy in patients with failure of POEM remain under debate. The reasons for failure of POEM are possibly more complex than those underlying failure of LHM which could somehow influence the success rate of following secondary treatment. Variations in the results of POEM may be associated with the endoscopic approach. In our case, we obtained a more careful history of the patient’s symptoms and conducted a thorough clinical examination to better understand the pathology underlying the failure of POEM. Our patient had significant type 1 achalasia and morbid reflux. We considered that performing a myotomy as deep as possible with mild anti-reflux fundoplication would be the most suitable treatment for our patient, which indeed did work well.

Table 1 Success rate and adverse event of secondary treatment for refractory achalasia

Van Hoeij reported 11 cases of LHM after unsuccessful POEM. The success rate was 45%, which was significantly superior to that of pneumatic dilation (22%) but not significantly different from that of repeat POEM (63%). Ichkhanian et al. reported 7 cases of secondary LHM after unsuccessful POEM with a success rate of 29%, demonstrating a statistical difference against repeat POEM (76%). The LHM-treated patients in this previous study tended to have severe conditions, which might have affected the results. Data regarding the treatment of unsuccessful POEM are scarce, making customized medical treatment plans necessary for each patient.

LHM with Dor fundoplication has some merit, compared with POEM. While POEM tends to fail because of an incomplete myotomy [25, 26], laparoscopic myotomy is performed under a magnified field of vision, making it easier to control the length and depth of incisions. In our case, we performed more complete dissection with rather loose Dor fundoplication than is usually undertaken. We would like to emphasize the higher controllability of cutting the muscles and fibers causing the symptoms in LHM. Also, the addition of fundoplication is an advantage of LHM with Dor fundoplication. LHM with Dor fundoplication is known to have a lower risk of postoperative GERD than POEM (15.2% vs. 37.4%) [27]. Not only POEM but also repeated POEM is associated with a relatively high incidence of postoperative GERD (33.3%) [19]. Thus, LHM with Dor fundoplication has the advantage of enabling a direct field of vision and allowing the tightness of the fundoplication to be adjusted, which might lower the risk of postoperative GERD.

Addition of an appropriate fundoplication procedure (Dor, Nissen, or Toupet techniques) is essential for improving the outcome of LHM. The Dor procedure involves partial wrapping of the anterior wall, the Nissen procedure consists of full wrapping of the posterior wall, and the Toupet procedure consists of partial wrapping of the posterior wall. Among the three, the Dor procedure is the preferred method with LHM. Rebecchi et al. reported that Dor fundoplication resulted in a significantly lower rate of postoperative dysphagia than Nissen fundoplication, presumably as partial wrapping would ensure proper opening of the cardia [28]. As for comparison between the two partial wrapping procedures, Dor and Toupet, an RCT of 73 patients reported better outcomes of the Dor procedure. Eckardt scores of < 3 were obtained in 100% of subjects who underwent Dor fundoplication and 90% of patients who underwent the Toupet procedures at 24 months [29]. It is possible that the anterior wall wrapping in the Dor procedure guarantees sturdiness by protecting the mucosa at the incision site, allowing more complete myotomy. On the other hand, conversely, postoperative GERD tends to be better controlled by Nissen > Toupet > Dor [30,31,32]. In light of the need to achieve reliable improvement in the dysphagia, as in our case, and the expectation that pharmacotherapy can also be useful to control GERD, we encourage surgeons to choose the Dor procedure.

For these reasons, we propose that LHM with Dor fundoplication should be performed proactively in patients with unsuccessful POEM.


LHM with Dor fundoplication seems to be safe and critically effective even for patients with refractory achalasia and a history of unsuccessful POEM since it has the advantages of allowing a sufficient myotomy and providing additional anti-reflux surgery.

Availability of data and materials

The data used in this study are available from the corresponding author upon reasonable request.



Acid exposure time


Gastroesophageal reflux disease


High-resolution manometry


Integrated relaxation pressure


Lower esophageal sphincter


Laparoscopic Heller myotomy


Peroral endoscopic myotomy


Timed barium esophagogram


  1. Boeckxstaens GE, Zaninotto G, Richter JE. Achalasia. Lancet. 2014;383(9911):83–93.

    Article  PubMed  Google Scholar 

  2. Schlottmann F, Patti MG. Esophageal achalasia: current diagnosis and treatment. Expert Rev Gastroenterol Hepatol. 2018;12(7):711–21.

    Article  CAS  PubMed  Google Scholar 

  3. Pasricha PJ, Hawari R, Ahmed I, Chen J, Cotton PB, Hawes RH, et al. Submucosal endoscopic esophageal myotomy: a novel experimental approach for the treatment of achalasia. Endoscopy. 2007;39(9):761–4.

    Article  CAS  PubMed  Google Scholar 

  4. Inoue H, Minami H, Kobayashi Y, Sato Y, Kaga M, Suzuki M, et al. Peroral endoscopic myotomy (POEM) for esophageal achalasia. Endoscopy. 2010;42(4):265–71.

    Article  CAS  PubMed  Google Scholar 

  5. Akintoye E, Kumar N, Obaitan I, Alayo QA, Thompson CC. Peroral endoscopic myotomy: a meta-analysis. Endoscopy. 2016;48(12):1059–68.

    Article  PubMed  Google Scholar 

  6. Swanstrom LL, Kurian A, Dunst CM, Sharata A, Bhayani N, Rieder E. Long-term outcomes of an endoscopic myotomy for achalasia: the POEM procedure. Ann Surg. 2012;256(4):659–67.

    Article  PubMed  Google Scholar 

  7. Bechara R, Woo M, Hookey L, Chung W, Grimes K, Ikeda H, et al. Peroral endoscopic myotomy (POEM) for complex achalasia and the POEM difficulty score. Dig Endosc. 2019;31(2):148–55.

    Article  PubMed  Google Scholar 

  8. Eckardt VF, Aignherr C, Bernhard G. Predictors of outcome in patients with achalasia treated by pneumatic dilation. Gastroenterology. 1992;103(6):1732–8.

    Article  CAS  PubMed  Google Scholar 

  9. Vigneswaran Y, Yetasook AK, Zhao J-C, Denham W, Linn JG, Ujiki MB. Peroral endoscopic myotomy (POEM): feasible as reoperation following Heller myotomy. J Gastrointest Surg. 2014;18(6):1071–6.

    Article  PubMed  Google Scholar 

  10. Zhou PH, Li QL, Yao LQ, Xu MD, Chen WF, Cai MY, et al. Peroral endoscopic remyotomy for failed Heller myotomy: a prospective single-center study. Endoscopy. 2013;45(3):161–6.

    Article  CAS  PubMed  Google Scholar 

  11. Ngamruengphong S, Inoue H, Ujiki MB, Patel LY, Bapaye A, Desai PN, et al. Efficacy and safety of peroral endoscopic myotomy for treatment of achalasia after failed heller myotomy. Clin Gastroenterol Hepatol. 2017;15(10):1531-1537.e3.

    Article  PubMed  Google Scholar 

  12. Landi R, Familiari P, Calì A, Borrelli De Andreis F, Massinha P, Bove V, et al. OC.04.4: per-oral endoscopic myotomy as rescue therapy in patients with symptoms recurrence after surgical myotomy. A single centre experience with mid-term follow-up. Dig Liver Dis. 2017;49:e86–7.

    Article  Google Scholar 

  13. Kristensen HØ, Kirkegård J, Kjær DW, Mortensen FV, Kunda R, Bjerregaard NC. Long-term outcome of peroral endoscopic myotomy for esophageal achalasia in patients with previous Heller myotomy. Surg Endosc. 2017;31(6):2596–601.

    Article  PubMed  Google Scholar 

  14. Zhang X, Modayil RJ, Friedel D, Gurram KC, Brathwaite CE, Taylor SI, et al. Per-oral endoscopic myotomy in patients with or without prior Heller’s myotomy: comparing long-term outcomes in a large U.S. single-center cohort (with videos). Gastrointest Endosc. 2018;87(4):972–85.

    Article  PubMed  Google Scholar 

  15. Tyberg A, Sharaiha RZ, Familiari P, Costamagna G, Casas F, Kumta NA, et al. Peroral endoscopic myotomy as salvation technique post-Heller: international experience. Dig Endosc. 2018;30(1):52–6.

    Article  PubMed  Google Scholar 

  16. Sanaka MR, Parikh MP, Thota PN, Sarvepalli S, Gupta NM, Muthukuru S, et al. Tu1157 comparison of outcomes of peroral endoscopic myotomy (poem) in achalasia patients with or without prior laproscopic heller’s myotomy (LHM). Gastrointest Endosc. 2018;87(6 Supplement):546.

    Article  Google Scholar 

  17. Arshava EV, Marchigiani RJ, Gerke H, El Abiad R, Weigel RJ, Parekh KR, et al. Per oral endoscopic myotomy: early experience and safety of a multispecialty approach. Surg Endosc. 2018;32(7):3357–63.

    Article  PubMed  Google Scholar 

  18. Huang Z, Cui Y, Li Y, Chen M, Xing X. Peroral endoscopic myotomy for patients with achalasia with previous Heller myotomy: a systematic review and meta-analysis. Gastrointest Endosc. 2021;93(1):47-56.e5.

    Article  PubMed  Google Scholar 

  19. Li Q-L, Yao L-Q, Xu X-Y, Zhu J-Y, Xu M-D, Zhang Y-Q, et al. Repeat peroral endoscopic myotomy: a salvage option for persistent/recurrent symptoms. Endoscopy. 2016;48(2):134–40.

    PubMed  Google Scholar 

  20. Tyberg A, Seewald S, Sharaiha RZ, Martinez G, Desai AP, Kumta NA, et al. A multicenter international registry of redo per-oral endoscopic myotomy (POEM) after failed POEM. Gastrointest Endosc. 2017;85(6):1208–11.

    Article  PubMed  Google Scholar 

  21. van Hoeij FB, Ponds FA, Werner Y, Sternbach JM, Fockens P, Bastiaansen BA, et al. Management of recurrent symptoms after per-oral endoscopic myotomy in achalasia. Gastrointest Endosc. 2018;87(1):95–101.

    Article  PubMed  Google Scholar 

  22. Ichkhanian Y, Assis D, Familiari P, Ujiki M, Su B, Khan SR, et al. Management of patients after failed peroral endoscopic myotomy: a multicenter study. Endoscopy. 2021;53(10):1003–10.

    Article  PubMed  Google Scholar 

  23. Giulini L, Dubecz A, Stein HJ. Laparoscopic Heller myotomy after failed POEM and multiple balloon dilatations: better late than never. Chirurg. 2017;88(4):303–6.

    Article  CAS  PubMed  Google Scholar 

  24. Zaninotto G, Costantini M, Portale G, Battaglia G, Molena D, Carta A, et al. Etiology, diagnosis, and treatment of failures after laparoscopic Heller myotomy for achalasia. Ann Surg. 2002;235(2):186–92.

    Article  PubMed  PubMed Central  Google Scholar 

  25. Werner YB, Costamagna G, Swanström LL, von Renteln D, Familiari P, Sharata AM, et al. Clinical response to peroral endoscopic myotomy in patients with idiopathic achalasia at a minimum follow-up of 2 years. Gut. 2016;65(6):899–906.

    Article  CAS  PubMed  Google Scholar 

  26. Ju H, Ma Y, Liang K, Zhang C, Tian Z. Function of high-resolution manometry in the analysis of peroral endoscopic myotomy for achalasia. Surg Endosc. 2016;30(3):1094–9.

    Article  PubMed  Google Scholar 

  27. Costantini A, Familiari P, Costantini M, Salvador R, Valmasoni M, Capovilla G, et al. Poem versus laparoscopic heller myotomy in the treatment of esophageal achalasia: a case–control study from two high volume centers using the propensity score. J Gastrointest Surg. 2020;24(3):505–15.

    Article  PubMed  Google Scholar 

  28. Rebecchi F, Giaccone C, Farinella E, Campaci R, Morino M. Randomized controlled trial of laparoscopic Heller myotomy plus Dor fundoplication versus Nissen fundoplication for achalasia: long-term results. Ann Surg. 2008;248(6):1023–30.

    Article  PubMed  Google Scholar 

  29. Torres-Villalobos G, Coss-Adame E, Furuzawa-Carballeda J, Romero-Hernández F, Blancas-Breña B, Torres-Landa S, et al. Dor Vs Toupet fundoplication after laparoscopic heller myotomy: long-term randomized controlled trial evaluated by high-resolution manometry. J Gastrointest Surg. 2018;22(1):13–22.

    Article  PubMed  Google Scholar 

  30. Ludemann R, Watson DI, Jamieson GG, Game PA, Devitt PG. Five-year follow-up of a randomized clinical trial of laparoscopic total versus anterior 180 degrees fundoplication. Br J Surg. 2005;92(2):240–3.

    Article  CAS  PubMed  Google Scholar 

  31. Watson DI, Jamieson GG, Lally C, Archer S, Bessell JR, Booth M, et al. Multicenter, prospective, double-blind, randomized trial of laparoscopic Nissen vs anterior 90 degrees partial fundoplication. Arch Surg. 2004;139(11):1160–7.

    Article  PubMed  Google Scholar 

  32. Rawlings A, Soper NJ, Oelschlager B, Swanstrom L, Matthews BD, Pellegrini C, et al. Laparoscopic Dor versus Toupet fundoplication following Heller myotomy for achalasia: results of a multicenter, prospective, randomized-controlled trial. Surg Endosc. 2012;26(1):18–26.

    Article  PubMed  Google Scholar 

Download references


The authors used an English Language Service (International Medical Information Center, Tokyo, Japan) for editing the language in the manuscript.


Not applicable.

Author information

Authors and Affiliations



TA and SO have made substantial contributions to the concept and design of the case report. KH, TA, YU, MS, HS, KM, and NO conceived of the study, and participated in its design and coordination and helped to draft the manuscript. All authors have read and approved submission of the final manuscript.

Corresponding author

Correspondence to Soji Ozawa.

Ethics declarations

Ethics and approval, and consent to participate

This report was written in accordance with our institution’s policies; the need for ethics board approval was waived.

Consent for publication

A written informed consent was obtained directly from the patient.

Competing interests

The authors declare that they do not have any conflicts of interest regarding the publication of this article.

Additional information

Publisher's Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Rights and permissions

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Aoki, T., Ozawa, S., Hayashi, K. et al. Laparoscopic Heller myotomy and Dor fundoplication following an unsuccessful peroral endoscopic myotomy. surg case rep 9, 106 (2023).

Download citation

  • Received:

  • Accepted:

  • Published:

  • DOI: