Single-Port RAS Using Da Vinci SP Surgical System for UTUC Patients

Inclusion Criteria: * Age 20 years or more * Histologically or cytologically diagnosed upper tract urothelial cancer * Fitting indications of radical nephroureterectomy and ipsilateral bladder cuff resection, and deemed feasible for robotic surgery * ASA physical status classification 1-2 and adequate organ function * Patients willing and able to comply with study protocol requirements and follow-up * With informed consent Exclusion Criteria: * Synchronous bladder cancer * Distant metastasis of cancer * BMI ≥30 or BMI \<18.5 * Unable to tolerate lateral decubitus or Trendelenburg position (relative contra-indication) * Severe adhesion due to prior abdominopelvic surgery (relative contra-indication) * Previous radiation treatment to the pelvic area * Active infectious disease * Severe concomitant illness that drastically shortens life expectancy or increases risk of therapeutic interventions, such as: severe heart disease (NYHA functional class III-IV) or severe lung disease (GOLD Group C-D) * Cannot follow trial-required procedures * Concomitant systemic or pelvic disease that increases the risk of surgery * Long-term use of anti-coagulant(s) * Patients with coagulopathy * Emergency surgery