case_images: PMC6287337_01
case_images: Axial abdominal and pelvic CT-scan before (a) and after (b) contrast injection. Sagittal (c) and coronal (d) abdominal reconstructions following contrast administration. There was a large right psoas muscle abscess (stars) displacing the right kidney upward. Note the presence of ring enhancement
case_images: SNI-9-239-g001.jpg
case_images: PMC6287337_01_SNI-9-239-g001.jpg
case_images: F1
case_images: Spinal lumbar and abdominal computed tomography scans (CT-scan) surprisingly showed a large right psoas abscess measuring 18 x 10 x 8 cm (a volume of about 720 mL) [Figure 1].
case_images: Operative view demonstrating posterior percutaneous drainage of the purulent collection above the right iliac crest (a). Follow-up abdominal CT scan 2 days after drainage of the abscess. Note the placement of the percutaneous drain (arrows) and the near complete resolution of the retroperitoneal collection (b). A follow-up axial abdominal CT scan with contrast injection 6 months postoperatively showing the absence of recurrent abscess (c)
case_images: SNI-9-239-g002.jpg
case_images: PMC6287337_01_SNI-9-239-g002.jpg
case_images: F2
case_images: Approximately, 570 mL of purulent fluid was obtained and a drain was left in place [Figure 2a]. The follow-up CT-scan on day 2 postoperatively showed near complete resolution of the abscess [Figure 2b]. She was successfully treated with antituberculous chemotherapy for 6 months with good clinical and radiological outcomes [Figure 2c].