一例罕见病例报告——锁骨软骨黏液样纤维瘤外侧端被误诊为巨细胞瘤和动脉瘤样骨囊肿。
A Case Report of a Rare Entity - Lateral End of Clavicle Chondromyxoid Fibroma which was Mistaken as Giant Cell Tumor and Aneurysmal Cyst.
作者信息
Rose N Sharon, Vutukuru Sri Ravindranath, Kumar Y Ranjith, Kumar Mettu Anil, Sunkari Umesh, Vidyasagar J H
机构信息
Department of Orthopedics, ESIC Medical College and Hospital, Hyderabad, Telangana, India.
Department of Orthopedics, AIIMS, Bibinagar, Telangana, India.
出版信息
J Orthop Case Rep. 2025 Aug;15(8):102-106. doi: 10.13107/jocr.2025.v15.i08.5900.
INTRODUCTION
The clavicle is an uncommon site for tumors, as it is a flat bone and rarely affected by neoplasms. Most clavicular tumors are malignant, with metastases and Ewing's sarcoma being the most common. Overall, clavicular neoplasms account for <1% of all bone tumors, and chondromyxoid fibroma (CMF) is particularly rare, comprising <1% of cases. This tumor typically arises in the metaphysis of the proximal tibia.
CASE REPORT
A young male patient comes with lateral end clavicle swelling, which on radiologically was diagnosed giant cell tumor. Later on, needle biopsy was thought to be an aneurysmal bone cyst (ABC). Finally, it turned out to be CMF on biopsy.
CONCLUSION
This case report presents a rare instance in which CMF was initially misdiagnosed as a giant cell tumor based on radiological findings and later as an ABC after histopathological examination. The definitive diagnosis of CMF was only confirmed following excisional biopsy.
引言
锁骨是肿瘤的罕见发病部位，因为它是扁骨，很少受到肿瘤影响。大多数锁骨肿瘤是恶性的，转移瘤和尤因肉瘤最为常见。总体而言，锁骨肿瘤占所有骨肿瘤的比例不到1%，而软骨黏液样纤维瘤（CMF）尤为罕见，占病例的比例不到1%。这种肿瘤通常发生在胫骨近端的干骺端。
病例报告
一名年轻男性患者出现锁骨外侧端肿胀，经放射学检查诊断为骨巨细胞瘤。后来，针吸活检认为是骨囊肿（ABC）。最后，活检结果显示为CMF。
结论
本病例报告展示了一个罕见的情况，即CMF最初根据放射学表现被误诊为骨巨细胞瘤，后来在组织病理学检查后又被误诊为ABC。CMF的确诊仅在切除活检后得到证实。
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