Abstract
Of late postoperative alopecia has been described in a few literature, however the cause of the disease is not clear. At the Department of Thoracic Surgery of the Okura National Hospital 8 cases were studied by the author and it was found that the cause is not so simple to determine. But these experiments enabled the author to suggest the possible process as well as the cause of the disease which are as follows: a) Due to the pressure of A. and V. occipitalis, N. occipitalis major and Lymphcanalis occipitalis a prepared condition of edema will be increased by use of chlorpromazin and general anesthesia. b) Then anemia, hypotony, anoxia, etc. caused by the surgical operation will occur lymphstasis. c) Consequently this will lead a local and a significant edema on the upper part of the pressured region. d) Depend upon the grade of the local injury this may grow permanent depilation.
