[Rinsho Byori 50 : 234〜241, 2002] *Department of Clinical Pathology, Omiya Medical Center, Jichi Medical School, Saitama 330-8503 *自治医科大学大宮医療センター(〒330-8503 さいたま市天沼町1-847) E-mail :isakura@omiya.jichi.ac.jp