CASE 1: Recurrent Giant Cell Tumor Located in the Sacroiliac Region

• 43-year-old female patient
• The patient has been diagnosed with lower back pain and swelling for two years.
• He was diagnosed with giant cell bone tumor after a needle biopsy abroad and underwent surgery.
• Following a relapse during follow-up, Denosumab treatment was initiated and used for 10 months.
• After the tumor was removed in one piece, the resulting space was reconstructed with lumbopelvic fixation and a cage.

Pre-operative examination: X-ray shows irregularity and sclerosis in the right sacroiliac region.

Preoperative examination: CT and MRI scans show bone destruction in the sacroiliac region and a large, irregular mass extending into the soft tissue.

During the operation: The tumor is removed in one piece, along with the old scar.

Postoperative Care: After tumor removal, reconstruction is performed with cage and lumbopelvic fixation.