This is about an article by the group at Sanjay Gandhi Institute in Lucknow that has published their data on 86 patients with CT-guided retroperitoneal node biopsies.

Diagnostic yield and safety of percutaneous CT-guided biopsy of retroperitoneal lesions and analysis of imaging features - Anil Kumar Singh, Zafar Neyaz, Ritu Verma, Anshul Gupta, Richa Mishra, Prabhakar Mishra, 2021
Background Computed tomography (CT)-guided biopsy is emerging as a preferred method for obtaining tissue samples from retroperitoneal lesions due to clear visua...
SAGE JournalsAnil Kumar Singh, Zafar Neyaz, Ritu Verma, Anshul Gupta, Richa Mishra, Prabhakar Mishra

Here is a short video reviewing the paper