Figure 1 Case 1, Female, 53 years old, right popliteal cyst(A) Preoperative magnetic resonance imaging (MRI) transverse section showing: the popliteal cyst is located behind the medial head of the gastrocnemius and the tendon of the semimembranosus muscle; (B) Preoperative MRI sagittal section indicating: the popliteal cyst is situated behind the medial head of the gastrocnemius and the tendon of the semimembranosus muscle.