Özlem Orhan1, Ahmet Yiğit Kaptan1, Ali Perçin2, İbrahim Tekpınar1, Ömercan Sepetçi1, Volkan Baki Çetin1, Mehmet Akif Altay1

1Department of Orthopedics and Traumatology, Medicine Faculty of Harran University, Şanlıurfa, Türkiye
2Department of Orthopedics and Traumatology, Cizre Dr. Selahattin Cizrelioğlu State Hospital, Şırnak, Türkiye

Keywords: Cyst hydatid, Echinococcus granulosus, muscle hydatidosis.


Objectives: In this study, we present our experience in patients with hydatid cysts located intramuscularly.

Patients and methods: Between May 2018 and May 2023, a total of 11 patients (3 males, 8 females; mean age: 29.1±13.6 years; range, 8 to 56 years) with intramuscular hydatid cysts were retrospectively analyzed. Demographic data, laboratory values, serological test results, location and size of the cyst, radiological imaging findings, and complications were recorded.

Results: The mean follow-up was 44.3±17.3 (range, 5 to 60) months. The mean mass size at the time of admission was 5.4±3.3 (range, 2 to 14) cm. Serologic tests were positive in the majority of cases (72.7%). Eosinophilia was negative in 72.7% patients. The rate of isolated muscle involvement was 81.8%. The rate of lower extremity involvement was 72.7%. The most common involvement was leg (36.4%), thigh (18.2%), and shoulder (18.2%). One patient developed compartment syndrome after cyst rupture during neoadjuvant antihelmintic therapy. There was no recurrence in any of the patients.

Conclusion: Hydatid cysts should be considered in the differential diagnosis of slowly growing, deeply located, painless soft tissue masses, particularly in endemic areas. Although it is a rare complication, compartment syndrome may develop after spontaneous cyst rupture. Neoadjuvant antihelmintic chemotherapy can reduce complications. The combination of total surgical excision and chemotherapy yields successful results in the treatment of hydatid cysts located in the muscle.

Citation: Orhan Ö, Kaptan AY, Perçin A, Tekpınar İ, Sepetçi Ö, Çetin VB, et al. Don’t miss it: Extremity-located cyst hydatid may mimic soft tissue tumors. Jt Dis Relat Surg 2023;34(3):687-693. doi: 10.52312/jdrs.2023.1371.

Ethics Committee Approval

The study protocol was approved by the Harran University Faculty of Medicine Clinical Research Ethics Committee (date: 10.07.2023, no: 2023/12/15). The study was conducted in accordance with the principles of the Declaration of Helsinki.

Author Contributions

Idea/concept and design: Ö.O., A.Y.K.; Data collection and/or processing: Ö.O., İ.T., Ö.S.; Analysis and/or interpretation: Ö.O, A.P.; control/ supervision: M.A.A., A.Y.K.; Literature review and writing the article: Ö.O., İ.T., Ö.S., A.P.; Critical review: V.B.Ç., M.A.A.; References and fundings: Ö.O., M.A.A.; Materials: Ö.O., M.A.A., V.B.Ç.

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.

Data Sharing Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.