Baker囊肿的影像诊断

Imaging diagnosis of Baker's cysts

目的分析Baker囊肿的影像特点,提高对该病的认识。方法回顾性分析22例Baker囊肿的影像表现,探讨Baker囊肿发生的部位、形态、信号、密度特征及毗邻关系。结果22例Baker囊肿中,腓肠肌内侧头与半膜肌间囊肿9例(40.9%),腓肠肌内侧头囊肿4例(18.2%),关节囊内囊肿4例(18.2%),半膜肌囊肿3例(13.6%),腓肠肌外侧头与股二头肌间囊肿、腘肌囊肿各1例。结论CT、MRI可良好显示Baker囊肿发生的部位、大小、形态、毗邻关系和伴随病变,有较高的临床价值。

Objective To analyze the imaging features of Baker＇s cysts and to improve the accuracy in diagnosis. Methods Imaging manifestation of 22 cases with Baker＇s cysts were analyzed retrospectively. The location and shape of cysts and feature of signal （density） and relation with the adjacent cysts were reviewed. Results With 22 cases of Baker＇s cysts, 9 cases （40.9%） located between the medial head of gastrocnemius muscle and semimembranous muscle, 4 cases （18.2%） in the medial head of gastrocnemius muscle, 4 cases （18.2%） in the joint capsule, 3 cases （13.6%） in the semimembranous muscle, 1 cases located between the lateral head of gastrocnemius muscle and biceps muscle of thigh, 1 cases in the popliteal muscle. Conclusion The location, size, shape, adjacent relationship and accompanied diseases of Baker＇s cysts can be better displayed on the CT, MRI, which can provide important clinical value.