Pheochromocytoma MalignantNCT07339241
Abdominal Circumference as a Predictor of Operative Time in Retroperitoneal Adrenalectomy for Pheochromocytoma
An observational study of Pheochromocytoma Malignant, run by Asan Medical Center.
Trial 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. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Pheochromocytoma Malignant
- What is being tested?
- Retroperitoneal Adrenalectomy
- Type of treatment
- Surgery or procedure
- How many people
- 159 participants
- Where
- No sites listed yet
- Study dates
- Jan 2017to Dec 2021
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
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.
Who may be able to join
- Adult patients diagnosed with pheochromocytoma
- Patients who underwent retroperitoneal adrenalectomy
- Availability of complete operative records
Who cannot join
- Patients younger than 18 years
- Patients who underwent transperitoneal adrenalectomy
- Incomplete clinical or operative data
About this study
Official title: Abdominal Circumference as a Novel Predictor of Operative Time in Retroperitoneal Adrenalectomy for Pheochromocytoma: A Retrospective Observational Study
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
- Being tested
- Retroperitoneal Adrenalectomy
- Keywords
- Pheochromocytoma, retroperitoneal adrenalectomy, operative time, abdominal circumference
- Medical subject headings
- Pheochromocytoma
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Retroperitoneal AdrenalectomyProcedure or surgery
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.
| Study group | Role | What they receive |
|---|---|---|
| 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. Receives: Procedure: Retroperitoneal Adrenalectomy |
What is being measured
The primary outcome is the main question the study is designed to answer.
Operative Time
Operative time measured in minutes from skin incision to skin closure, obtained from operative records.
Measured: During surgery
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted14 Jan 2026
- Study startJan 2017
- Primary completionDec 2021
- Study completionDec 2021
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Pheochromocytoma MalignantStudies of the same condition, open and under way.
- More trials run by Asan Medical CenterThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Cohort
- Time perspective
- Retrospective
- Enrolment
- 159 participants (actual)
Sponsor and investigators
- Lead sponsor
- Asan Medical Center
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Byung-Chang Kim, Asan Medical Center
- Investigators
- BYUNG-CHANG KIM, MD, PhD, Principal investigator, Asan Medical Center
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07339241
- Sponsor's protocol ID
- AC-PHEO-RPA
- Status last verified
- Jan 2026
- First submitted
- 5 Jan 2026
- Last updated
- 14 Jan 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 14 Jan 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Abdominal Circumference as a Novel Predictor of Operative Time in Retroperitoneal Adrenalectomy for Pheochromocytoma: A Retrospective Observational Study
- ClinicalTrials.gov ID
- NCT07339241
- Acronym / sponsor ID
- AC-PHEO-RPA
- Conditions
- Pheochromocytoma Malignant
- Keywords
- Pheochromocytoma, retroperitoneal adrenalectomy, operative time, abdominal circumference
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 159 participants (actual)
- Lead sponsor
- Asan Medical CenterUniversity, hospital or other
- Study start
- Jan 2017 (actual)
- Primary completion
- Dec 2021 (actual)
- Study completion
- Dec 2021 (actual)
- First posted
- 14 Jan 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
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.
Study design
- Observational model
- Cohort
- Time perspective
- Retrospective
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Pheochromocytoma Patients | – | Procedure: Retroperitoneal AdrenalectomyPatients 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. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- 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.
Key inclusion criteria (3 listed)
- Adult patients diagnosed with pheochromocytoma
- Patients who underwent retroperitoneal adrenalectomy
- Availability of complete operative records
Key exclusion criteria (3 listed)
- Patients younger than 18 years
- Patients who underwent transperitoneal adrenalectomy
- Incomplete clinical or operative data
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Retroperitoneal AdrenalectomyRetroperitoneal 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. | Procedure or surgery | Pheochromocytoma Patients |
Primary outcome
Operative Time
Time frame: During surgery
Operative time measured in minutes from skin incision to skin closure, obtained from operative records.
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 14 Jan 2026.
- Individual participant dataSharing planned: No
Related trials for Pheochromocytoma Malignant
RecruitingObservational study
Adrenal Diseases in the Population of Modena: A Clinical-Epidemiological Database of Patients Referred to the Adrenal Disorders Outpatient Clinic of the Clinical Unit of Endocrinology at the Modena University Hospital (AOU Modena)
Cushing s Syndrome, Cushing Disease
RecruitingObservational study
Von Hippel-Lindau (VHL): Clinical Manifestations, Diagnosis, Management and Molecular Bases of Inherited Renal and Other Urologic Malignant Disorders
Kidney Cancer, Urologic Malignant Disorders
RecruitingPhase 1
A First-in-Human Phase I Trial With Antibody Drug Conjugate ADCT-701 in Neuroendocrine Tumors, Carcinomas and Malignant Peripheral Nerve Sheath Tumors
Neuroendocrine Carcinomas, Neuroendocrine Tumors
Active, not recruitingPhase 2
Tipifarnib for the Treatment of Advanced Solid Tumors, Lymphoma, or Histiocytic Disorders With HRAS Gene Alterations, a Pediatric MATCH Treatment Trial
Malignant Solid Neoplasm, Recurrent Adrenal Gland Pheochromocytoma
RecruitingPhase 1/2
HTL0039732 in Participants With Advanced Solid Tumours
Neoplasms, Prostatic Neoplasms, Castration-Resistant
Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
BYUNG-CHANG KIM, MD, PhD principal investigator
Asan Medical Center
Questions about this trial
What is this clinical trial studying?
An observational study of Pheochromocytoma Malignant, run by Asan Medical Center.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 3 inclusion and 3 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 14 Jan 2026. Status can change between updates, so confirm with the study contact before making plans.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Operative Time (time frame: During surgery). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 14 Jan 2026.