METHODS: Records of 22 patients with PTL treated in Cancer Hospital, Chinese Academy of Medical Sciences from Jan.1990 to Jan. 2004 were retrospectively analyzed.

• 方法:分析中国医学科学院中国协和医科大学肿瘤医院1990年1月至2004年1月收治的22例PTL患者的临床和病理资料。