Mischale, you might want to check out Vera Pyle's Current Medical Terminology (Silver Book) as it has a very nice and much more useful set of definitions for tract and an explanation of the difference between tract and track.
In this case, her definition of tract meaning an abnormal passage through tissue (as in sinus tract or fistulous tract) would seem to fit the bill.
She further points out that track is rarely used in medical dictation, but that when it is, it is usually a verb meaning to follow a path or course.
Don't feel bad. I have to check back to that page periodically. It has dirt marks and fingerprints on it.
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The dogmas of the quiet past are inadequate to the stormy present. Abraham Lincoln
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