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<v ->We're gonna finish up in the last few minutes

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of this particular lecture talking about a few other topics.

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And one of my favorite topics is that of rice bodies.

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Hopefully most of you in the audience

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have heard the term rice bodies,

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and I'm not entirely sure if you know

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why we call them rice bodies?

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But if you look at their appearance,

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pathologically, they look very, very similar

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to the appearance of grains of polished rice.

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Now some would argue, they look more like millet seeds,

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or melon seeds, but most of the time people say,

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"Gee, they look just like these seeds of the,

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or grains of the polished rice."

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So that's where the term comes from.

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These rice bodies generally relate to chronic synovitis,

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so they originated it seems, within the synovium.

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And what occurs often at the base of the rice body,

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they pinch off and these may become free bodies.

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There is not much by vascularity within rice bodies.

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So if you use Intravenous Gadolinium, most of the time,

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the rice bodies themselves will not enhance

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following Intravenous Gadolinium administration.

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We see these in joints,

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we see these rice bodies in bursa and less commonly,

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we see them in tendon sheets.

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The causes include: Rheumatoid arthritis,

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juvenile idiopathic arthritis,

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tuberculosis, other infections, spondyloarthropathies,

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here at the bottom, you can see a list.

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I'll show you some examples.

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Here with involvement of the subacromial-subdeltoid bursa

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and rheumatoid, many rice bodies.

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These are mainly elongated,

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of intermediate and low signal

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with a background of high signal fluid.

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Here's an example of tuberculosis

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involving those recesses in the volar aspect of the wrist.

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As we've talked about,

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you can appreciate here again, rice bodies

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which are of lower signal intensity

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with a background of fluid.

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They're not common, but I've seen in a couple of cases

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sarcoid produce rice bodies here

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involving both the radial and ulna bursa of the wrist.

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Again, the rice bodies of relatively low signal intensity.