PMC5237725_01
Magnetic resonance imaging sagittal plane view: cyst size.
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Based on magnetic resonance imaging (MRI), a 95 mm x 26 mm cystic lesion had located in soft tissue at the posterior of the gastrocnemius, with extensive synovial pannus inside; degeneration of the medial meniscus posterior horn was observed (Figure 1).
Arthroscopic view of pannus formation.
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Diagnostic arthroscopy was performed and intense synovial hypertrophy signs and pannus formation were detected (Figure 2).
Cyst aspiration material compatible with subacute inflammatory period.
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Lowviscosity cyst material flowed into the joint after controlling for the horizontal tear of the medial meniscus posterior horn with a probe (Figure 3).
Excision of the Baker's cyst by posteromedial incision.
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The cyst was reached by creating an approximately 9 cm posteromedial incision (Figure 4).