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Chondrosarcomas are common primary bone tumours in adults, often affecting the flat bones. Oncologic outcomes are often tied to tumour grade; however, grade is only a factor in the aggressiveness of a tumor. Extracompartmental extension, or tumor stage, has been found to be predictive of a poor outcome in other flat bone chondrosarcomas; however, this relationship has not been identified in the scapula. The purpose of the current study was to analyze the impact of tumour stage on the outcome of patients with scapular chondrosarcoma. Thirty-nine patients (26 males:13 females) with a mean age of 46 ± 17 undergoing surgical resection of a scapular chondrosarcomas were reviewed. Most patients had grade 1 (n = 24) tumors, with 26 (67%) having extracompartmental extension. The mean follow-up was eight years. The ten year disease-specific survival was 77%. High-grade tumours (HR 18.15, p < 0.01) were associated with death due to disease. The ten year local recurrence- and metastatic-free survival were 77% and 74%. Positive surgical margins (HR 8.85, p < 0.01) were associated with local recurrence, and local recurrence was associated with metastatic disease (HR3.37, p = 0.04). All disease recurrences and death due to disease occurred in patients with extracompartmental extension (p < 0.05). Extracompartmental extension was associated with a worse oncologic outcome in patients with scapular chondrosarcomas. Positive margins were associated with local recurrence, which was associated with metastatic disease; wide local excision with negative margins should be a goal for all patients, regardless of tumour grade. © 2022. The Author(s) under exclusive licence to SICOT aisbl.


Elizabeth P Wellings, Katherine E Mallett, Chad W Parkes, Joshua R Labott, Peter S Rose, Matthew T Houdek. Impact of tumour stage on the surgical outcomes of scapular chondrosarcoma. International orthopaedics. 2022 May;46(5):1175-1180

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PMID: 35165786

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