ABSTRACT
<p><b>OBJECTIVE</b>To investigate the application of partial costectomy and costophrenic angle closure (PCCAC) and perioperative management in the treatment of liver tumor by high intensity focused ultrasound (HIFU).</p><p><b>METHODS</b>The clinical data of 69 patients with liver tumor underwent HIFU within the recent four years were retrospectively reviewed.</p><p><b>RESULTS</b>92.8% of these 69 liver tumor patients had had concomitant diseases and 13.0% of them developed postoperative complications without anyone died. There was no significant postoperative dysfunctions of kidney or lung as compared with the preoperative ones (P > 0.05).</p><p><b>CONCLUSION</b>In the treatment of liver tumor by HIFU, PCCAC, as an auxillary means, giving few complications and little harmful effects on respiratory physiology, is highly safe.</p>