According to the Enneking surgical staging system for musculoskeletal sarcomas, a Stage IIB lesion is characterised by:

• A Low grade, intracompartmental, no metastasis
• B High grade, extracompartmental, no metastasis ✓
• C Low grade, extracompartmental, no metastasis
• D High grade, intracompartmental, with regional lymph node metastasis

Explanation

Enneking staging uses grade (G), local extent (T), and metastasis (M). Stage IIB = G2 (high grade), T2 (extracompartmental — beyond the anatomical compartment), M0 (no metastasis). Stage IIIA/B denotes any grade with regional or distant metastasis. Extracompartmental spread (IIB) mandates wider surgical margins and typically necessitates more complex reconstruction.

Reference: Maheshwari Essential Orthopaedics, 6th ed.

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Written and medically reviewed by the StethoPrep medical team.