İsmail Burak Atalay1, Coşkun Ulucaköy1, Mustafa Cem Seyhoğlu1, Fisun Ardıç Yükrük2, Mesut Mısırlıoğlu1, Bedii Şafak Güngör1

1Department of Orthopedics and Traumatology, Dr. Abdurrahman Yurtaslan Ankara Oncology Training and Research Hospital, Ankara, Türkiye
2Department of Pathology, Dr. Abdurrahman Yurtaslan Ankara Oncology Training and Research Hospital, Ankara, Türkiye

Keywords: Bone cysts, Echinococcus granulosus, osseous hydatidosis.


Objectives: This study aims to evaluate the symptoms, skeletal manifestations, and management of patients with tumor-like osseous hydatidosis treated in our oncology clinic in the long term and to share our clinical experience with this extremely rare disease.

Patients and methods: Between December 2010 and May 2019, a total of 11 patients (6 males, 5 females; mean age: 45.1±13 years; range, 22 to 70 years) who were treated with a bone hydatid cyst (HC) and followed were retrospectively analyzed. Epidemiological, clinical, diagnostic, and therapeutic data of the patients with long-term follow-up were collected.

Results: The mean follow-up was 63.2±23.9 (range, 24 to 101) months. The most common site of bone hydatidosis was the femur in four (36%) patients. The most common clinical presentation was pain in seven (63.6%) patients. Two (18.2%) patients had a pathological fracture of the femur. It was detected incidentally in two patients. Contact history was present in two patients (with dog), and two (18.2%) patients had concomitant extraosseous cystic echinococcosis in the liver. Complete blood count analysis was performed in all patients and eosinophilia was positive in three (27.3%) patients. As treatment, curettage cementation was performed in nine (81%) patients (internal fixation was also applied to five of them), while wide resection and prosthesis were applied to two (18.2%) patients.

Conclusion: The diagnosis of osseous hydatidosis is difficult and the prognosis is often poor. This entity should be kept in mind for the differential diagnosis of the cystic or tumoral lesions of the bone.

Citation: Atalay İB, Ulucaköy C, Seyhoğlu MC, Ardıç Yükrük F, Mısırlıoğlu M, Güngör BŞ. A rare lesion that mimics a bone tumor: Osseous hydatidosis. Jt Dis Relat Surg 2022;33(2):435-439.

Ethics Committee Approval

The study protocol was approved by the Dr. Abdurrahman Yurtaslan Ankara Oncology Training and Research Hospital, Ethics Committee (no: No: 2021-06-1153). The study was conducted in accordance with the principles of the Declaration of Helsinki.

Author Contributions

Writing the article: İ.B.A.; Writing the article: C.U.; Data analysis: M.C.Ş.; Data collection: F.A.Y.; Literature review: M.M.; Critical review: B.Ş.G.

Conflict of Interest

The authors declared no conflicts of interest with respect to the authorship and/or publication of this article.

Financial Disclosure

The authors received no financial support for the research and/or authorship of this article.