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Sonographic appearances of meniscal cysts

✍ Scribed by Seymour, Richard; Lloyd, David C. F.

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
257 KB
Volume
26
Category
Article
ISSN
0091-2751

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✦ Synopsis

Purpose. This study was conducted to define the sonographic appearances of cysts of the tibial menisci.

Methods. Thirteen cases of meniscal cyst, proven by magnetic resonance imaging (MRI), were assessed using high-resolution sonography, and results of the 2 imaging modalities were correlated.

Results. Seven meniscal cysts were lateral to the joint line, and 6 were located medially. MRI showed all 13 cysts to be associated with a tear of the adjoining meniscus. On sonograms, cyst size varied from 9 to 56 mm. Echotexture varied from uniformly hypoechoic or hypoechoic with echogenic septa to heterogeneously hyperechoic. Septated cysts were demonstrated by MRI and sonography.

Conclusions. Because of their diverse echo patterns, meniscal cysts may be easily mistaken for softtissue tumors, ganglions, or other lesions, which may result in surgery being inappropriately recommended. This is particularly true in the case of echogenic cysts. The cardinal sonographic characteristic of a meniscal cyst is its continuity with the meniscus, not its echotexture.

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