Medullary-only suturing (single-layer)SutureMedullary and cortical suturing (two-layer)SutureHemostatic Agent
Medullary-only suturing (single-layer): Only the base layer (medulla) is sutured after tumor excision, Cortical suturing is omitted. Hemostatic agents are applied.
Medullary and cortical suturing (two-layer): Both medullary and cortical layers are sutured after tumor excision, Performed with robotic assistance using absorbable sutures. Hemostatic agents are applied
Renal function preservation is a growing concern in the surgical management of kidney tumors, particularly with the rise in chronic kidney disease worldwide. Recent surgical innovations have focused on modifying renorrhaphy techniques to minimize renal damage. Emerging evidence suggests that omitting cortical suturing may reduce operative time, blood loss, and renal parenchymal loss without increasing major complications. This randomized controlled trial aims to compare outcomes between medullary-only and combined cortical-medullary suture techniques during robot-assisted partial nephrectomy, with the goal of identifying the approach that best balances functional preservation and surgical safety.
Eligibility
Sex
ALL
Min age
18 Years
Max age
—
Healthy volunteers
No
Inclusion Criteria:
* Diagnosis of renal mass confirmed by computed tomography (CT) or magnetic resonance imaging (MRI)
* Indication for partial nephrectomy
* Written informed consent
* Expected survival of at least 6 months
* Eastern Cooperative Oncology Group (ECOG) score performance status ≤ 1
* Negative serum or urine pregnancy test within 24 hours before surgery for women of childbearing potential
* Recovery from any prior therapy-related toxicity to grade 1 or better
* If a biopsy has been performed, pathology consistent with renal cell carcinoma (RCC)
Exclusion Criteria:
* Solitary kidney
* Multiple or bilateral renal masses if more than one mass is operated on simultaneously or within less than 4 months
* Hepatic or renal toxicity grade ≥ 2 with glomerular filtration rate (GFR) \< 30 according to Common Terminology Criteria for Adverse Events (CTCAE v4)
* Bleeding diathesis
* Inability to maintain anticoagulation for surgery
* Participation in another experimental trial simultaneously or within 30 days prior to enrollment
* Significant acute or chronic medical, neurological, or psychiatric condition that could compromise safety, limit study completion, or impair study objectives in the opinion of the Principal Investigator
Primary outcome measure(s)
Estimated Blood loss — Perioperative/Periprocedural time Estimated blood loss, assessed to compare renorrhaphy techniques (single medullary suture vs. combined medullary and cortical suture) during partial nephrectomy. The volume, recorded in milliliters, was measured using a graduated collection canister connected to the assistant surgeon's suction device, with correction for the amount of saline solution instilled into the cavity.
Trial sites (2)
Facility
City
Region
Status
Hospital MaterDei Salvador
Salvador
Estado de Bahia
Recruiting
Brazilian Institute of Robotic Surgery
Salvador
Estado de Bahia
Recruiting
More Brazilian Institute of Robotic Surgery trials in Brazil
This page summarises publicly available registry data for informational purposes — not medical advice. Eligibility is determined by each study team; patients should discuss participation with their clinician.
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