1 MCQs in Pathology for NEET PG
A 16-year-old boy presents with progressive pain and swelling around the knee for 3 months. X-ray shows a mixed lytic-sclerotic lesion in the distal femoral metaphysis with soft tissue extension. Histopathology reveals pleomorphic spindle cells with high mitotic activity. The structure marked **B** in the diagram—the pink lacy material produced by the tumor cells—is the defining pathologic feature of this malignancy. Which of the following best describes the composition and diagnostic significance of this structure?
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