Ganglion cysts at the gastrocnemius origin: a series of ten cases |
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Authors: | S L J James D A Connell J Bell A Saifuddin |
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Institution: | (1) Department of Radiology, RNOH Stanmore, Brockley Hill, Stanmore, Middlesex, HA7 4LP, UK;(2) Department of Radiology, Royal Orthopaedic Hospital, Birmingham, B31 2AP, UK;(3) Department of Orthopaedic Surgery, Kingston Hospital NHS Trust, Galsworthy Road, Kingston Upon Thames, Surrey, KT2 7QB, UK |
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Abstract: | Objective To describe ganglion cysts arising close to the origin of the medial and lateral head of gastrocnemius as identified on magnetic
resonance (MR) imaging.
Design and patients We present a series of ten cases of ganglion cysts arising close to the gastrocnemius origin from the medial and lateral femoral
condyles. These were collected over a 6-year period from our imaging database. All patients attended for routine MR imaging
of the knee with a variety of clinical presentations. Data collected included patient demographics, ganglion size, ganglion
site, clinical presentation and ancillary MR imaging findings. The ten patients in this series consisted of seven males and
three females, five right and five left knees, age range 27–68 years, mean age 40.6 years.
Results The mean maximal dimension of the ganglion cysts was 26 mm, range 15–40 mm. The medial gastrocnemius origin was involved in
eight patients and the lateral origin in two patients. The MR imaging findings consisted of both uni- and multi-loculated
cysts, often containing numerous septations with fluid signal characteristics. The cysts were extra-capsular with no clear
communication with the joint. One patient presented with a popliteal soft tissue mass and none of the cases required surgical
intervention for cyst removal.
Conclusions MR imaging may identify ganglion cysts arising in an intra- or extra-articular site around the knee. This series documents
the MR imaging characteristics of ganglion cysts arising close to the gastrocnemius origin and discusses the relevance of
this imaging finding. |
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Keywords: | MR imaging Ganglion cyst Knee Gastrocnemius |
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