Randomized Clinical Trial of Posterior Retroperitoneoscopic Adrenalectomy Versus Lateral Laparoscopic Adrenalectomy

NCT ID: NCT01959711

Last Updated: 2013-10-10

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE4

Total Enrollment

65 participants

Study Classification

INTERVENTIONAL

Study Start Date

2006-01-31

Study Completion Date

2013-07-31

Brief Summary

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Laparoscopic adrenalectomy has become the gold standard operation for non-malignant adrenal tumors replacing open adrenalectomy. The most popular lateral transperitoneal laparoscopic adrenalectomy (LTLA) approach has been recently challenged by an increasing popularity of the posterior retroperitoneoscopic adrenalectomy (PRA) approach which is believed by many surgeons as an easy to learn, reproducible and beneficial for patients. However, this belief is not evidence-based, so far. The aim of this study is to clarify if PRA is superior to the LTLA as minimally invasive approach to small and benign adrenal tumors.

Detailed Description

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Laparoscopic adrenalectomy has replaced open adrenalectomy as the standard operation for non-malignant adrenal tumours. Thanks to the popularization of the posterior technique described by Walz and co-workers, the posterior retroperitoneal adrenalectomy (PRA) is being performed in increasing numbers worldwide. Advocates for the laparoscopic and retroperitoneoscopic approaches cite the advantages of each technique, but there is no published evidence that supports the superiority of one over the other. Most of the published literature is retrospective, with inadequate or no controls and with potential biases.

The aim of this study is to test the hypothesis that PRA is superior to the lateral transperitoneal laparoscopic adrenalectomy (LTLA) as minimally invasive approach to small and benign adrenal tumors.

For a sample size calculation an assumption was made that a 20% reduction in duration of surgery represents clinically relevant difference. To detect this, it was calculated that 24 patients would be required in each treatment arm to give the study a power of 90 per cent. Anticipating a 25% loss to follow-up, 32 patients per arm were required in the study.

Conditions

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Adrenal Tumor Pheochromocytoma Conn's Syndrome Cushing's Syndrome

Keywords

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Lateral transperitoneal laparoscopic adrenalectomy Posterior retroperitoneoscopic adrenalectomy

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

SINGLE

Outcome Assessors

Study Groups

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Posterior RA

Posterior retroperitoneoscopic adrenalectomy

Group Type EXPERIMENTAL

Posterior RA

Intervention Type PROCEDURE

Posterior retroperitoneoscopic adrenalectomy

Lateral transperitoneal LA

Lateral transperitoneal laparoscopic adrenalectomy

Group Type ACTIVE_COMPARATOR

Lateral transperitoneal LA

Intervention Type PROCEDURE

Lateral transperitoneal laparoscopic adrenalectomy

Interventions

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Posterior RA

Posterior retroperitoneoscopic adrenalectomy

Intervention Type PROCEDURE

Lateral transperitoneal LA

Lateral transperitoneal laparoscopic adrenalectomy

Intervention Type PROCEDURE

Eligibility Criteria

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Inclusion Criteria

* unilateral adrenal tumor below 7cm in diameter without suspicion for malignancy

Exclusion Criteria

* active malignancy
* pregnancy or lactation
* age below 18 years, or above 80 years
* high-risk patients according to the American Society of Anesthesiology (ASA 4 grade or higher
* inability to comply with the scheduled follow-up protocol
Minimum Eligible Age

18 Years

Maximum Eligible Age

80 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Jagiellonian University

OTHER

Sponsor Role lead

Responsible Party

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Marcin Barczynski

Associate Professor of Surgery at the Third Chair of General Surgery

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Marcin BarczyƄski, MD, PhD

Role: PRINCIPAL_INVESTIGATOR

Jagiellonian University

Locations

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Jagiellonian University, Medical College, Third Chair of General Surgery

Krakow, , Poland

Site Status

Countries

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Poland

References

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Barczynski M, Konturek A, Golkowski F, Cichon S, Huszno B, Peitgen K, Walz MK. Posterior retroperitoneoscopic adrenalectomy: a comparison between the initial experience in the invention phase and introductory phase of the new surgical technique. World J Surg. 2007 Jan;31(1):65-71. doi: 10.1007/s00268-006-0083-8.

Reference Type BACKGROUND
PMID: 17180554 (View on PubMed)

Lee CR, Walz MK, Park S, Park JH, Jeong JS, Lee SH, Kang SW, Jeong JJ, Nam KH, Chung WY, Park CS. A comparative study of the transperitoneal and posterior retroperitoneal approaches for laparoscopic adrenalectomy for adrenal tumors. Ann Surg Oncol. 2012 Aug;19(8):2629-34. doi: 10.1245/s10434-012-2352-0. Epub 2012 Apr 20.

Reference Type BACKGROUND
PMID: 22526902 (View on PubMed)

Perrier ND, Kennamer DL, Bao R, Jimenez C, Grubbs EG, Lee JE, Evans DB. Posterior retroperitoneoscopic adrenalectomy: preferred technique for removal of benign tumors and isolated metastases. Ann Surg. 2008 Oct;248(4):666-74. doi: 10.1097/SLA.0b013e31818a1d2a.

Reference Type BACKGROUND
PMID: 18936580 (View on PubMed)

Walz MK, Alesina PF, Wenger FA, Deligiannis A, Szuczik E, Petersenn S, Ommer A, Groeben H, Peitgen K, Janssen OE, Philipp T, Neumann HP, Schmid KW, Mann K. Posterior retroperitoneoscopic adrenalectomy--results of 560 procedures in 520 patients. Surgery. 2006 Dec;140(6):943-8; discussion 948-50. doi: 10.1016/j.surg.2006.07.039.

Reference Type BACKGROUND
PMID: 17188142 (View on PubMed)

Constantinides VA, Christakis I, Touska P, Palazzo FF. Systematic review and meta-analysis of retroperitoneoscopic versus laparoscopic adrenalectomy. Br J Surg. 2012 Dec;99(12):1639-48. doi: 10.1002/bjs.8921. Epub 2012 Sep 28.

Reference Type BACKGROUND
PMID: 23023976 (View on PubMed)

Rubinstein M, Gill IS, Aron M, Kilciler M, Meraney AM, Finelli A, Moinzadeh A, Ukimura O, Desai MM, Kaouk J, Bravo E. Prospective, randomized comparison of transperitoneal versus retroperitoneal laparoscopic adrenalectomy. J Urol. 2005 Aug;174(2):442-5; discussion 445. doi: 10.1097/01.ju.0000165336.44836.2d.

Reference Type BACKGROUND
PMID: 16006861 (View on PubMed)

Barczynski M, Konturek A, Nowak W. Randomized clinical trial of posterior retroperitoneoscopic adrenalectomy versus lateral transperitoneal laparoscopic adrenalectomy with a 5-year follow-up. Ann Surg. 2014 Nov;260(5):740-7; discussion 747-8. doi: 10.1097/SLA.0000000000000982.

Reference Type DERIVED
PMID: 25243546 (View on PubMed)

Other Identifiers

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BBN 501/ZKL/130/L

Identifier Type: -

Identifier Source: org_study_id