<prompt> For the following dyslipidemias, select the most characteristic finding.Type III hyperlipoproteinemia.palmar plane xanthomastriglycerides 1000subcutaneous extensor tendon xanthomaslow serum cholesterol  <response>: In the rare familial form, raised yellow plaques appear on palms and fingers, and reddish-yellow xanthomas occur on the elbows. This disorder is felt to be secondary to accumulation of abnormal chylomicron and very low-density lipoprotein VLDL remnants. It is probably due to inherited homozygous defects in Apo E-II structure. 