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

NCT07339241 | Completed

• 1 other identifier: AC-PHEO-RPA
• Study Type: observational
• Target: 159
• Locations: 0 countries
• Sites: N/A

Brief Summary

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.

Conditions

Pheochromocytoma Malignant

Keywords

Pheochromocytoma; retroperitoneal adrenalectomy; operative time; abdominal circumference

Outcome Measures

Primary Outcomes (1)

• Operative Time

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

  During surgery

Study Arms (1)

Pheochromocytoma Patients

Patients diagnosed with pheochromocytoma who underwent retroperitoneal adrenalectomy at a single tertiary referral center. All procedures were performed as part of routine clinical care, and no experimental intervention was assigned for the purpose of this observational study.

Procedure: Retroperitoneal Adrenalectomy

Interventions

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.

Pheochromocytoma Patients

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)
• Sampling Method: Non-Probability Sample

Study Population

The study population consists of adult patients diagnosed with pheochromocytoma who underwent retroperitoneal adrenalectomy at a single tertiary referral center. Data were collected retrospectively from electronic medical records.

You may qualify if:

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

You may not qualify if:

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

Sponsors & Collaborators

• Asan Medical Center: lead

MeSH Terms

Conditions

Pheochromocytoma

Condition Hierarchy (Ancestors)

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

Study Officials

• BYUNG-CHANG KIM, MD, PhD

  Asan Medical Center

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: observational
• Observational Model: COHORT
• Time Perspective: RETROSPECTIVE
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: MD, PhD

Study Record Dates

• First Submitted: January 5, 2026
• First Posted: January 14, 2026
• Study Start: January 1, 2017
• Primary Completion: December 1, 2021
• Study Completion: December 1, 2021
• Last Updated: January 14, 2026

Record last verified: 2026-01

Data Sharing

• IPD Sharing: Will not share