An observational study in Pheochromocytoma Malignant, sponsored by Asan Medical Center. Completed. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-01-14.
Sponsored by Asan Medical Center · Observational
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.
149 studies on the registry are indexed under Pheochromocytoma; 56 are open to participants now.
This study's enrollment of 159 is below the median of 186 across 54 observational studies indexed under Pheochromocytoma.
Browse Pheochromocytoma studies →Asan Medical Center is the lead sponsor of 562 studies on the registry; 71 are open to participants now.
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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.
Exclusion Criteria:
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
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.
Operative Time
Operative time measured in minutes from skin incision to skin closure, obtained from operative records.
Time frame: During surgery
No study locations are listed for this record.
Plan to share: No
No publications or documents are linked to this record.
This study is completed, as verified in Jan 2026. You cannot join it, but the record below documents what was studied.
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Asan Medical Center