Fig. 20From: A practical guide for planning pelvic bone percutaneous interventions (biopsy, tumour ablation and cementoplasty)A 71-year-old man with destructive pubic symphysis arthropathy. An anterior approach was used to perform the biopsy with a 13-G bone needle. There is gas from the pubic symphysis diffusing to the Retzius space (white arrow)Back to article page