Abdominal Circumference as a Predictor of Operative Time in Retroperitoneal Adrenalectomy for Pheochromocytoma

This retrospective observational study examines whether abdominal circumference is associated with operative time in patients undergoing retroperitoneal adrenalectomy for pheochromocytoma. Data were collected from medical records of patients treated at a single tertiary referral center. The primary outcome is operative time, measured in minutes. The purpose of this study is to evaluate whether abdominal circumference can serve as a practical predictor of operative difficulty in retroperitoneal adrenalectomy.

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Key information

Conditions

Pheochromocytoma Malignant Neoplasms Neoplasms by Histologic Type Neoplasms, Germ Cell and Embryonal Neoplasms, Nerve Tissue Neuroectodermal Tumors Neuroendocrine Tumors Paraganglioma Pheochromocytoma

Age range

18 year and older

Sex eligibility

All sexes

Study type

Observational

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

Adult patients diagnosed with pheochromocytoma
Patients who underwent retroperitoneal adrenalectomy
Availability of complete operative records

Exclusion criteria

Patients younger than 18 years
Patients who underwent transperitoneal adrenalectomy
Incomplete clinical or operative data

Treatment and study plan

Retroperitoneal Adrenalectomy

Procedure

Retroperitoneal adrenalectomy performed as part of routine clinical care for patients with pheochromocytoma. No experimental intervention was assigned, and the surgical procedure was not altered for the purpose of this observational retrospective study.

Primary outcomes

Operative Time

Time frame: During surgery

Operative time measured in minutes from skin incision to skin closure, obtained from operative records.

Sponsors and collaborators

Lead sponsor

Asan Medical Center

Other

Registry information

Official study title

Abdominal Circumference as a Novel Predictor of Operative Time in Retroperitoneal Adrenalectomy for Pheochromocytoma: A Retrospective Observational Study

Important dates

Study start: 2017
Primary completion: 2021
Study completion: 2021
First posted: Jan 14, 2026
Registry last updated: Jan 14, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

Published trials that share one or more normalized conditions with this study.

Completed