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Oncogenic osteomalacia: imaging studies
1Medizinische Klinik und Poliklinik, Universität des Saarlandes, Homburg/Saar.
Summary
Tumor-induced hypophosphatemic osteomalacia (OM) resolved after surgical excision of a synovial sarcoma. Imaging revealed tumor vascularity and calcification, with resolution of osteomalacia post-surgery.
Area of Science:
- Oncology
- Radiology
- Endocrinology
Background:
- Hypophosphatemic osteomalacia (OM) is a rare metabolic bone disease.
- Tumor-induced OM is often associated with mesenchymal tumors.
- Early diagnosis and treatment are crucial for managing OM.
Observation:
- A 34-year-old patient presented with tumor-induced hypophosphatemic osteomalacia.
- Initial imaging showed features of OM and periosteal new bone formation.
- Conservative treatment improved bone density but did not resolve Looser's zones.
Findings:
- A low-grade synovial sarcoma in the first left metatarsal space was identified.
- The tumor exhibited hypervascular and partially calcified structures.
- Surgical excision of the tumor led to complete resolution of osteomalacia signs.
Implications:
- This case highlights the importance of considering tumor-induced OM in patients with unexplained bone disease.
- Advanced imaging techniques like NMR and angiography are valuable for characterizing tumor vascularity.
- Surgical tumor removal is an effective treatment for tumor-induced OM, leading to full recovery.