There are about 3194 clinical studies being (or have been) conducted in Portugal. The country of the clinical trial is determined by the location of where the clinical research is being studied. Most studies are often held in multiple locations & countries.
A study to determine the effect on prevention of Acute Urinary Retention (inability to urinate) in males with an enlarged prostate, also known as BPH. - Free study-related medical care provided.
RATIONALE: Breast-conserving treatments such as radiation therapy or limited surgery are less invasive than mastectomy and may improve the quality of life. It is not yet known if breast-conserving treatments are as effective as mastectomy followed by radiation therapy in treating locally advanced breast cancer. PURPOSE: Randomized phase III trial to compare the effectiveness of breast-conserving therapy with mastectomy followed by radiation therapy in treating women who have locally advanced breast cancer that has been previously treated with chemotherapy.
RATIONALE: Drugs used in chemotherapy use different ways to stop tumor cells from dividing so they stop growing or die. Combining more than one drug and giving them after surgery may kill more tumor cells. PURPOSE: Randomized phase III trial to compare the effectiveness of fluorouracil and leucovorin with or without irinotecan in treating patients who have undergone surgery for stage III colorectal cancer.
RATIONALE: Drugs used in chemotherapy use different ways to stop tumor cells from dividing so they stop growing or die. Combining chemotherapy with peripheral stem cell or bone marrow transplantation may allow the doctor to give higher doses of chemotherapy drugs and kill more tumor cells. PURPOSE: Phase II trial to study the effectiveness of combination chemotherapy given before surgery followed by peripheral stem cell or bone marrow transplantation in treating infants who have newly diagnosed neuroblastoma.
RATIONALE: Drugs used in chemotherapy use different ways to stop cancer cells from dividing so they stop growing or die. Peripheral stem cell transplant may allow the doctors to give higher doses of chemotherapy drugs and kill more cancer cells. It is not yet known which combination chemotherapy regimen given before peripheral stem cell transplant is more effective in treating relapsed Hodgkin's lymphoma. PURPOSE: This randomized phase III trial is comparing different regimens of combination chemotherapy followed by peripheral stem cell transplant to see how well they work in treating patients with relapsed Hodgkin's lymphoma.
RATIONALE: Drugs used in chemotherapy use different ways to stop tumor cells from dividing so they stop growing or die. Combining more than one drug, and giving them before surgery, may shrink the tumor so that it can be removed during surgery. PURPOSE: Phase II trial to study the effectiveness of combination chemotherapy followed by surgery in treating infants who have newly diagnosed neuroblastoma.
RATIONALE: Drugs used in chemotherapy use different ways to stop tumor cells from dividing so they stop growing or die. Combining more than one drug may kill more tumor cells. PURPOSE: Phase II trial to study the effectiveness of different combination chemotherapy regimens in treating infants who have newly diagnosed neuroblastoma.
RATIONALE: Drugs used in chemotherapy use different ways to stop tumor cells from dividing so they stop growing or die. Giving a chemotherapy drug before surgery may shrink the tumor so that it can be removed during surgery. PURPOSE: Phase II trial to study the effectiveness of combination chemotherapy followed by surgery in treating infants who have newly diagnosed neuroblastoma.
RATIONALE: Drugs used in chemotherapy use different ways to stop tumor cells from dividing so they stop growing or die. Giving chemotherapy drugs before surgery may shrink the tumor so that it can be removed during surgery. PURPOSE: Phase III trial to determine the effectiveness of combination chemotherapy given before surgery in treating children who have localized neuroblastoma.
RATIONALE: Biological therapies such as BCG use different ways to stimulate the immune system and stop tumor cells from growing. Drugs used in chemotherapy use different ways to stop tumor cells from dividing so they stop growing or die. Combining chemotherapy with biological therapy may kill more tumor cells. It is not yet known if BCG is more effective with or without mitomycin. PURPOSE: Randomized phase II trial to compare the effectiveness of BCG plus mitomycin with that of BCG alone in treating patients who have bladder cancer.