This study evaluated the ability of NLS diagnostics to differentiate between chondrosarcoma and bone metastases in adult and elderly patients.
Researchers analyzed NLS findings from 8 patients with chondrosarcoma and 5 patients with metastatic bone lesions using 3D visualization and spectral-entropic analysis (SEA).
Both tumor types showed similar hyperchromogenic features, but important differences were identified in tumor size, shape, contour, and internal structure.
Chondrosarcomas were generally larger, often displayed septal and lobular patterns, and had more distinct contours than metastatic lesions.
NLS ultramicroscanning with SEA provided the clearest distinction, revealing characteristic structural patterns that helped differentiate primary and metastatic bone tumors.
The authors concluded that NLS, particularly when combined with ultramicroscanning and SEA, may support differential diagnosis of malignant bone lesions.

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