Robotic-Assisted Enucleation Performed for Renal Tumor Adjacent to Vascular Plexus: Urology Team Executes Precise “Bomb Disposal” Operation

Kidney Function Successfully Preserved for Renal Cell Carcinoma Patients

A core challenge in urological kidney surgery lies in striking a balance between complete tumor resection and maximum preservation of renal function. Tumors located near the renal hilum — the vital “core zone” of the kidney — pose severe challenges to urologists, as they sit tightly against major renal blood vessels and the collecting system.

Recently, the Urology Department team at Taikang Xianlin Drum Tower Hospital, Affiliated to Nanjing University Medical School, overcame this clinical hurdle and successfully performed robotic-assisted laparoscopic renal tumor enucleation on two patients. The surgery achieved complete tumor resection while optimally preserving patients’ renal function, marking a new milestone in minimally invasive nephron-sparing surgery at our hospital.

How to Select Surgical Approaches for Complex Tumors

The male patient presented with a tumor measuring roughly 25 ml (egg-sized) beneath the left renal hilum, adjacent to the renal artery and renal pelvis, with the renal artery dividing into three branches. The female patient had an 18 ml mass beside the right renal hilum encased by multiple arteries and veins.

The renal hilum acts as the main switch for renal blood perfusion and urine drainage. Operating in this region is analogous to defusing a bomb amid dense energy pipelines; the slightest surgical deviation may trigger catastrophic complications including massive hemorrhage, renal ischemic necrosis, or urinary leakage.

For such complex lesions, radical nephrectomy is technically simpler yet results in permanent loss of one kidney, creating long-term risks to patients’ quality of life and renal compensatory capacity.

Robotic-Assisted Enucleation Prioritizes Kidney Preservation

After thorough preoperative assessment and multidisciplinary departmental discussion, the Urology team confirmed both patients qualified for kidney-sparing treatment and decided to carry out robotic-assisted laparoscopic renal tumor enucleation.

Unlike conventional resection techniques, enucleation takes the tumor’s pseudocapsule as the surgical boundary, enabling precise separation of the tumor from healthy renal parenchyma much like peeling a grape.

Performed under magnified high-definition laparoscopic visualization, enucleation guarantees negative surgical margins, avoids unnecessary injury to large blood vessels, lowers intraoperative bleeding and postoperative complication risks, preserves maximal healthy nephrons, and facilitates faster postoperative renal function recovery.

Though the procedure demanded extreme caution, the operation proceeded smoothly. Led by Director Ge Jingping, the team leveraged profound anatomical knowledge of the kidney and sophisticated laparoscopic proficiency to completely enucleate the tumors and meticulously suture the renal wound beds.

Both surgeries saw minimal blood loss with intact tumor removal. Postoperative pathological tests confirmed early-stage malignant renal cell carcinoma with negative resection margins for both patients. Follow-up examinations showed stable renal function as anticipated, and both patients have now recovered and been discharged.

Kidney-Sparing Surgery: A Trend and Clinical Philosophy

Widespread routine physical check-ups have drastically increased early detection rates of renal carcinoma. Modern urological therapeutic philosophy has evolved from merely “resecting lesions” to “eradicating malignancy while protecting organ function to the greatest extent possible.”

Tumors near the renal hilum were once deemed a relative no-go zone for nephron-sparing surgery. However, advances in surgical techniques and accumulated clinical experience have established laparoscopic enucleation as the primary treatment option for such masses. The success of these two complicated operations fully embodies our Urology team’s commitment to conquering technical frontiers and patient-centered care.

The Urology Department of Taikang Xianlin Drum Tower Hospital, Affiliated to Nanjing University Medical School, recommends annual abdominal ultrasound screening for all individuals aged 40 and above — an economical and effective modality to detect early renal tumors. Upon discovering a renal mass, patients need not panic, as most early-stage kidney cancer can be cured via minimally invasive kidney-sparing surgery.

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