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Current Case:

66-years old with metastatic breast carcinoma had a new right common iliac node.

The oncologist wanted a biopsy and to check ER, PR HER2 neu.

Here are the previous posts describing the other approaches.

Anterior Approach

Case 63: Anterior Approach for Iliac Node Biopsy
Left proximal external iliac node biopsied using an anterior approach.
Case 88: Transiliopsoas Route for Iliac Bifurcation Node Biopsy
Most pelvic lesions are approachable one way or another. An understanding of anatomy goes a long way in helping us find the correct route.
Case 164: Parting of the Bowel Loops with a Blunt-Tip
Those who do CT guided biopsies should use the blunt-tip technique more often. It allows safe passage past bowel and vessels to reach the target.

Posterior Approach

Case 62: Transsacral Biopsy for Iliac Nodes
Transsacral biopsy of an iliac bifurcation note

The video describes the case and the different approaches to biopsy of pelvic nodes.