Year: 2025 | Month: April | Volume: 12 | Issue: 4 | Pages: 85-92
DOI: https://doi.org/10.52403/ijrr.20250410
Chondroblastic Osteosarcoma of the Clavicle: A Rare Case Report
Ignatius Angga Rusdianto1, Kenny Gozal1, I Gede Eka Wiratnaya2
1Resident, Dept. Orthopaedic & Traumatology, Prof IGNG Ngoerah General Hospital, Udayana University, Bali, Indonesia
2Orthopaedic Surgeon, Dept. Orthopaedic & Traumatology, Prof IGNG Ngoerah General Hospital, Udayana University, Bali, Indonesia
Corresponding Author: Ignatius Angga Rusdianto
ABSTRACT
Introduction: Osteosarcoma is the most common primary malignant bone tumor, typically arising in the metaphyseal regions of long bones. Clavicular osteosarcoma is exceedingly rare, accounting for less than 1% of all osteosarcomas. Chondroblastic osteosarcoma is a histologic subtype characterized by the presence of chondroid matrix in addition to the typical osteoid component. This case report aims to present the diagnosis and management of a rare case of chondroblastic osteosarcoma of the clavicle and discuss the relevant literature on the topic.
Case Presentation: A 21-year-old male presented with a growing lump on his left neck since nine months ago. The patient underwent biopsy which revealed chondroblastic type osteosarcoma in the left medial clavicle. He had received four series of neoadjuvant cisplatin and doxorubicin. Tumor resection was done with thoracic surgeon backup. Postoperative care included immobilization with collar brace and arm sling, active distal range of motion exercises, and regular wound care.
Discussion: Clavicular osteosarcoma is exceedingly rare, accounting for less than 1% of all osteosarcomas. Clavicle has a unique characteristic from other long bone and flat bone which supported the fact that that clavicle had low incidence of bone tumor. Neoadjuvant chemotherapy, followed by surgical resection and postoperative adjuvant chemotherapy, has been the mainstay of treatment for osteosarcoma. primary goal of surgery is to achieve wide en bloc resection with negative margins while preserving function. Prognosis of clavicular osteosarcoma is not well-established due to the rarity of the condition. Long-term follow-up is crucial for monitoring local recurrence and detecting distant metastases.
Conclusion: The diagnosis and management of clavicular osteosarcoma can be challenging due to its uncommon location and proximity to vital structures. A multidisciplinary approach is essential for optimal management and improved survival outcomes in such cases. Further studies and case reports are necessary to better understand the prognostic factors and long-term outcomes for patients with clavicular osteosarcoma.
Keywords: chondroblastic osteosarcoma, clavicle, primary malignant bone tumor, tumor resection.
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