Real-time intraoperative ultrasound registration for accurate surgical navigation in patients with pelvic malignancies.

Purpose: Surgical navigation aids surgeons in localizing and adequately resecting pelvic malignancies. Accuracy of the navigation system highly depends on the preceding registration procedure, which is generally performed using intraoperative fluoroscopy or CT. However, these ionizing methods are time-consuming and peroperative updates of the registration are cumbersome.

What To Do With Suspected Nodal Regrowth on Magnetic Resonance Imaging During Follow-up in an Organ Preservation Approach for Rectal Cancer?

Background: For nodal regrowth in patients with rectal cancer following watch-and-wait standardized protocols on diagnostic procedures and subsequent treatment are lacking.

Objective: Evaluate the diagnosis and treatment of suspected nodal regrowth following an organ preservation approach.

Settings: Patients were included from national and institutional watch-and-wait -databases.