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Lying on your back vs. your side: which is safer for kidney surgery?

NCT ID NCT07234409

Symptom relief Sponsor: Niguarda Hospital Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study compares two ways to position patients during robot-assisted surgery to remove small kidney tumors. One group lies on their side (standard flank position), while the other lies on their back (supine position). The goal is to see which position leads to fewer complications, cleaner surgery, and faster recovery. The trial will include 124 adults with small kidney tumors.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
robot-assisted partial nephrectomy (surgical procedure)
What this could lead to
If successful, this could show that the supine position is safer and less painful than the standard flank position for kidney tumor surgery.
What could go wrong
This is a small, early-stage trial with only 124 participants, so results may not apply to all patients. Both procedures are already used, so no major breakthrough is expected.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 124 people

The number the study aims to enrol. It can still change while the study runs.

Started

Oct 2025

Expected to finish

Mar 2027

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

* Age ≥ 18 years; * Presence of a single, unilateral, primary renal mass ≤ 7 cm in diameter (clinical stage cT1) documented CT scan * No evidence of systemic disease or lymph node involvement; * Candidate for robot-assisted partial nephrectomy using the Da Vinci SP platform; * Signed informed consent * Absence of solitary kidney status * No previous partial nephrectomy/ies on the same kidney * Absence of preoperative chronic kidney disease (CKD) stage 5 * Absence of any condition that makes mandatory or significantly more adequate the choice of a specific approach over the others (e.g., multiple previous major abdominal surgeries, horseshoe kidney, presence of stomas)

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Conditions

The condition(s) this trial relates to.

Deception kidney cancer kidney neoplasm

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Kidney neoplasm

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • ASST Grande Ospedale Metropolitano Niguarda

    RECRUITING

    Milan, 20162, Italy

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