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Articles by M Miyashita
Total Records ( 4 ) for M Miyashita
  N Okishiro , M Miyashita , S Tsuneto , K Sato and Y. Shima

There has been a debate in appropriateness of legalization of death with dignity and euthanasia in Japan. To clarify views about these issues, we conducted a large nationwide study of the bereaved whose family member died at palliative care units. The percentages of 429 bereaved family members (response rate 65%) who affirmed legal authorization were 52 for death with dignity and 45 for euthanasia and who affirmed assignment at the discretion of the physician involved were 37 for death with dignity and 38 for euthanasia. In conclusion, views about legalization of death with dignity and euthanasia among the bereaved are inconsistent. No consensus is reached as to legislation of these issues.

  E Kusajima , M Kawa , M Miyashita , K Kazuma and T. Okabe

The aim of this study was to clarify patients' characteristics and the level of symptom management in the transition to specialized home palliative care, and to examine prospectively real-time evaluation of both terminal cancer patients and their families. This study was conducted at one of the largest institutions offering specialized home palliative care in Japan. We asked both the patient's and the family's health status at the initial assessment and 2 weeks later. One hundred sets of patients and their families were included in this study. Regarding patient characteristics at the time of referral to the specialized home palliative care service, patients referred from outpatient settings had more severe physical symptoms than patients referred from inpatient settings. The specialized home palliative care service could contribute to patients' symptom and families' psychosocial status.

  T Misawa , M Miyashita , M Kawa , K Abe , M Abe , Y Nakayama and C. W. Given

Background: The aim of this study was to validate the Caregiver Reaction Assessment (CRA) among caregivers of community-dwelling advanced cancer patients in Japan. Methods: A cross-sectional questionnaire was administered to advanced cancer patients and their caregivers who were cared for at day hospices and home palliative care services. We translated the CRA into Japanese, and then verified factor validity, reliability, construct validity, concurrent validity, and known groups’ validity. To address construct and concurrent validity, we calculated Pearson’s correlation coefficient between the Japanese version of the CRA and the Burden Index of Caregivers (BIC). To address known groups’ validity, we used the t test or analysis of variance (ANOVA). Results: A total of 57 caregivers participated in the study. Five factors were extracted (‘‘impact on schedule,’’ ‘‘caregiver’s self-esteem,’’ ‘‘lack of family support,’’ ‘‘impact on health,’’ and ‘‘impact on finances’’) and reliability was good. Construct and concurrent validity among the subscales of the BIC were good. Regarding known groups validity, the subscale score of ‘‘impact on schedule’’ for the groups that cared 6 hours or more per day was higher than the other group (P = .04). Conclusion: The CRA-J is valid and reliable. This scale is useful for caregivers of cancer patients in Japan.

  K Tamaki , H Sasano , T Ishida , K Ishida , M Miyashita , M Takeda , M Amari , N Harada Shoji , M Kawai , T Hayase , N Tamaki and N. Ohuchi

Breast ultrasonography has gained widespread acceptance as a diagnostic tool for the evaluation of human breast disorders. It is important to evaluate the correlation of ultrasonography findings with the corresponding histopathological features.


We retrospectively reviewed the 154 cases of breast disorders. We evaluated the correlation the ultrasonography findings and carcinoma cells extension with their corresponding histopathological findings. In addition, we also studied the information on estimation of histological types and cancer extension used by the other modalities such as computed tomography and magnetic resonance imaging.


The concordance rate for margins between ultrasonography findings and histopathological features was 91.6% (P < 0.001) and that for boundary zone was 87.0% (P < 0.001). Histopathological correlation of internal and posterior echoes demonstrated that internal low echo masses were composed of fibroblastic cells with marked collagenization in the stroma, or the cases in which carcinoma cells proliferated in a monotonous, solid and/or expanding manners. Attenuation of posterior echo was detected in the cases associated with hyperplasia of collagenized fibroblastic stroma. An increased cellularity in the mass with prominent large tumor nests and little fibrous stroma demonstrated the accentuation or no alterations of the posterior echo. The concordance rate of borders was 84.4% (P < 0.001). The correlation between estimated histological type by ultrasonography diagnosis and actual histological types was 87.0%. An overall detection rate of carcinoma extension by ultrasonography was 86.4%. In addition, an overall detection rate of carcinoma extension by ultrasonography, magnetic resonance imaging and computed tomography was 93.8%.


These results demonstrated correlation between histopathological and ultrasonographic findings of the breast lesions is cardinal for quality control or improving the quality of ultrasonography.

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