abstract background: breast cancer is the most prevalent cancer among iranian women, and is the fifth cause of cancer-related death in iran. most studies have reported an overall excess of 20–30% chance for a second primary cancer to develop in individuals with a first breast cancer. in this study, we evaluated different factors might have a role in increasing the incidence of a second malignan...

The standard therapy for thyroid cancer is total or near total thyroidectomy, followed by the administration of radioactive iodine for remnant ablation or residual disease. Patients with radioiodine therapy are predisposed to second malignant neoplasms in organs such as central nervous system (CNS), breast, prostate, kidney, bone marrow, salivary gland, and digestive tract. Exposure to carcinog...

background: patients which have diagnosed with a cancer, have a life time risk for developing another de novo malignancy depending on various inherited, environmental and iatrogenic risk factors. cancer victims could survive longer due to settling treatment modalities, and then would likely develop a new metachronous malignancy. this article aims to report our observed trend of increasing, in p...

second primary malignancy following multiple myeloma (mm) was reported several years ago. there are also rare reports of cases with synchronous mm and other malignancies. to our knowledge, only one case of mm following bladder cancer has been reported in the literature. here, we report the second case occurred three months after diagnosis of bladder cancer.