Supplementary Material for: Chondromyxoid Fibroma of the Clavicle: A Case Report of a Rare Clinical Entity

<b><i>Introduction:</i></b> Chondromyxoid fibroma is a rare benign cartilaginous tumor that accounts for less than 1% of all bone tumors and involves long bones of the lower extremities more frequently. Therefore, the clavicle is a rare location of involvement for this entity. <b><i>Case Presentation:</i></b> The authors report a case of a diaphyseal chondromyxoid fibroma of the right clavicle in a 30-year-old male that was submitted to en bloc resection of the lesion and reconstruction with an autologous tricortical graft from the iliac crest. The post-operative period was uneventful, and the patient had regained excellent function of this right shoulder. At 2 years of follow-up, there was no evidence of a recurrence of the disease. <b><i>Conclusion:</i></b> Chondromyxoid fibroma of the clavicle should be included in the differential diagnosis of an indolent growing mass in this anatomic location.