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[The clinical meaning of the measurement of the chest wall movement].

Using a 6-channeled linear magnetometer, the chest wall movement of the esophageal cancer patients was measured before operation. The patients were divided into two groups. Group A: measured value of the bilateral chest wall movement was equal. Group B: measured value of the chest wall movement was different. (One side of the chest wall movement was restricted.) Two groups were compared with several factors in pre-, intra-, post-operation. Two groups had difference in thickness and adhesion of the pleura, operation time, bleeding volume on thoracotomy, lymph nodes metastasis to intrathoracic region, and staging by lymph nodes metastasis. (Group B had larger value in these factors.) The result suggests that the restriction of the chest wall movement was caused by the adhesion of the pleura.