The radioactivity concentrations of 226Ra, 232Th and 40K in 24 samples of natural and manufactured building materials commonly used in Bangladesh were measured using HPGe gamma ray spectrometer. The results in the pre...The radioactivity concentrations of 226Ra, 232Th and 40K in 24 samples of natural and manufactured building materials commonly used in Bangladesh were measured using HPGe gamma ray spectrometer. The results in the present study were compared with the world average and also with the reported data available in literature. The radium equivalent activity, the absorbed dose rate, annual effective dose, external and internal hazard indices, gamma index, alpha index, annual gonadal dose equivalent and excess lifetime cancer risk were also evaluated to assess the potential radiation hazards associated with these building materials. All samples under investigation were found to be within the recommended safety limit and do not pose any significant radiation hazards. This study can be used as a reference for more extensive studies of the same subject in future.展开更多
Objective: This study evaluated the risk factors for pelvic lymph node metastasis in patients with early stage cervical cancer. Material and Methods: A cross sectional study was carried out in the Division of Gynaecol...Objective: This study evaluated the risk factors for pelvic lymph node metastasis in patients with early stage cervical cancer. Material and Methods: A cross sectional study was carried out in the Division of Gynaecologic Oncology at Bangabandhu Sheikh Mujib Medical University (BSMMU) between July 2014 and July 2015 to evaluate demographic factors and histopathological findings of women with cervical cancer stage IB-IIA who underwent primary radical hysterectomy and bilateral pelvic lymph node dissection. Results: Fifty women aged 30 years or above were included in the study. Lymph node metastases were identified in 20% of patients. By univariate analysis, preoperative anemia, a history of smoking, tumor size greater than 4 cm and lack of cervical inflammatory reaction by histopathology were significant variables associated with lymph node metastasis. Multivariate analysis showed that the lack of inflammatory reaction in the uterine cervix was the most important predictor for pelvic lymph node metastasis when adjusting for other variables. Moderate to severe inflammatory reaction in the uterine cervix was 18 times less likely to have pelvic lymph node metastasis than those who had mild inflammation. Conclusion: An association was found between the presence of pelvic lymph node metastasis in cervical cancer and certain variables: the lack of contraceptive use, smoking, preoperative anemia, bulky tumors, invasion of deep two-third of the uterine cervix, mild inflammatory reaction in the cervix, and keratinizing carcinoma. After adjusting for other factors, presence or absence of inflammatory reaction in the cervix was found to be the most important predictor for pelvic lymph node metastasis.展开更多
文摘The radioactivity concentrations of 226Ra, 232Th and 40K in 24 samples of natural and manufactured building materials commonly used in Bangladesh were measured using HPGe gamma ray spectrometer. The results in the present study were compared with the world average and also with the reported data available in literature. The radium equivalent activity, the absorbed dose rate, annual effective dose, external and internal hazard indices, gamma index, alpha index, annual gonadal dose equivalent and excess lifetime cancer risk were also evaluated to assess the potential radiation hazards associated with these building materials. All samples under investigation were found to be within the recommended safety limit and do not pose any significant radiation hazards. This study can be used as a reference for more extensive studies of the same subject in future.
文摘Objective: This study evaluated the risk factors for pelvic lymph node metastasis in patients with early stage cervical cancer. Material and Methods: A cross sectional study was carried out in the Division of Gynaecologic Oncology at Bangabandhu Sheikh Mujib Medical University (BSMMU) between July 2014 and July 2015 to evaluate demographic factors and histopathological findings of women with cervical cancer stage IB-IIA who underwent primary radical hysterectomy and bilateral pelvic lymph node dissection. Results: Fifty women aged 30 years or above were included in the study. Lymph node metastases were identified in 20% of patients. By univariate analysis, preoperative anemia, a history of smoking, tumor size greater than 4 cm and lack of cervical inflammatory reaction by histopathology were significant variables associated with lymph node metastasis. Multivariate analysis showed that the lack of inflammatory reaction in the uterine cervix was the most important predictor for pelvic lymph node metastasis when adjusting for other variables. Moderate to severe inflammatory reaction in the uterine cervix was 18 times less likely to have pelvic lymph node metastasis than those who had mild inflammation. Conclusion: An association was found between the presence of pelvic lymph node metastasis in cervical cancer and certain variables: the lack of contraceptive use, smoking, preoperative anemia, bulky tumors, invasion of deep two-third of the uterine cervix, mild inflammatory reaction in the cervix, and keratinizing carcinoma. After adjusting for other factors, presence or absence of inflammatory reaction in the cervix was found to be the most important predictor for pelvic lymph node metastasis.
