URANIUM AND 210PO RADIONUCLIDES IN DRINKING WATER IN SOUTHERN BULGARIA AND EXPECTED RADIATION DOSES.

The activity concentrations of the naturally occurring radionuclides 238U, 234U and 210Po have been determined for the first time in drinking water from certain sources in Southern Bulgaria using nuclear and radiochemical methods. The results obtained for the water samples vary in the intervals 0.6-678 mBq l-1 for 238U, 1.

Safety and efficacy of modified radical lymph nodes dissection in patients with papillary thyroid cancer and clinically evident lymph nodes metastasis.

Introduction: Papillary cancer of the thyroid gland is well known as a lymphotropic type of cancer. In more than 50 percent of all cases it metastasizes first and mainly in regional lymph nodes. The extent of surgical intervention remains a subject of controversy and discussions.