case_images: PMC8311839_01
case_images: Transverse CT image showing deep pelvic abscess located at presacral region before drainage (red arrows).
case_images: aml-28-170-g001.jpg
case_images: PMC8311839_01_aml-28-170-g001.jpg
case_images: fig1
case_images: Computed tomography (CT) was performed, and L5/S1 vertebral space pyogenic spondylodiscitis was noticed along with left facet joint destruction and presacral abscess located in ventral sacral surface (Fig. 1). 
case_images: Transverse CT image showing bone marrow biopsy needle penetrating the sacrum.
case_images: aml-28-170-g002.jpg
case_images: PMC8311839_01_aml-28-170-g002.jpg
case_images: fig2
case_images: The needle was gradually advanced through the left sacrum pedicle by applying forward pressure and rotation (Fig. 2). 
case_images: Transverse CT image showing drainage catheter placement.
case_images: aml-28-170-g003.jpg
case_images: PMC8311839_01_aml-28-170-g003.jpg
case_images: fig3
case_images: Fr locking pigtail catheter (Cook medical) was passed over the guide wire into the cavity. Finally, the guide wire was removed leaving the catheter within the abscess cavity (Fig. 3).