Overview
Giant cell tumor (GCT) is a locally aggressive benign bone tumor, accounting for 5 to 10% of benign bone tumors, with potential for rare metastasis and malignant transformation 2. Soft tissue involvement and associated conditions like hyperuricemia can complicate the clinical presentation 1.Diagnosis
Clinical Presentation: Localized pain, often in the sacrum radiating to lower limbs; may include vague abdominal complaints and bowel/bladder symptoms 2.
Imaging: Advanced neuroimaging, particularly MRI, recommended for accurate assessment 2.
Biopsy: Essential for definitive diagnosis, guided by imaging findings 2.
Associated Findings: Presence of tophaceous deposits in soft tissue may indicate hyperuricemia 1.Management
Primary Treatment: Curettage with adjuvant bone grafting or cement-augmented stabilization 2.
Surgical Options: Sacral resection for selected cases to ensure local tumor control and survival 2.
Adjunctive Therapy: Tumor embolization can be palliative or curative in unresectable or refractory cases 2.Special Populations
Comorbidities: Hyperuricemia may coexist with soft tissue GCT, necessitating management of crystal deposits 1.Key Recommendations
Utilize MRI for detailed imaging assessment prior to biopsy in suspected sacral GCT (Evidence: Moderate 2).
Employ curettage combined with bone grafting or cement stabilization as the standard surgical approach for GCT (Evidence: Moderate 2).
Consider sacral resection in cases where less invasive methods fail to control the tumor locally (Evidence: Expert opinion 2).References
1 Schuind FA, Stallenberg B, Remmelink M, Pasteels JL. Associated giant cell tumor and tophaceous deposits in a finger pulp: a case report. The Journal of hand surgery 2003. link00255-7)
2 Randall RL. Giant cell tumor of the sacrum. Neurosurgical focus 2003. link