background & objectives: in the 6-billion-population world 2000, approximately 10 million cancers were diagnosed, among which there were an estimated 6.2 million cancer deaths. whereas the universality of cancer incidence and mortality is established, the burden of cancer by type or organ site is distributed unequally between developing and industrialized nations. we want to collect some inform...

We have recently reported our experience in skin cancer after heart transplantation in 92 heart transplant recipients who survived more than 6 months after the operation, with an average follow-up period of 43.3 months [2]. In our series, 26 skin cancers were found in 14 patients, which represents a frequency of 15.2%. In addition, more than one skin cancer developed in 5 of the 14 patients dur...

The involvement of the leptomeninges by metastatic tumors can be observed in solid tumors, in which case it is termed meningeal carcinomatosis (MC), and in lymphoproliferative malignant disease. It is more common in breast and lung cancer, as well as melanoma, with adenocarcinoma being the most frequent histological type. MC is usually a late event, with disseminated and progressive disease alr...

BACKGROUND Recent clinical trials suggest that epidermal growth factor receptor (EGFR)-targeted agents could benefit many patients with cancer. METHODS We review the current status of several EGFR-targeted therapies in cancer patients and address the efficacy of theses drugs as monotherapy or in combination with other drugs and/or treatments. RESULTS Cetuximab is the most widely studied ant...

Over the past two decades, the theory of tumor evolution has largely focused on the selective sweeps model. According to this theory, tumors evolve by a succession of clonal expansions that are initiated by driver mutations that have a fitness advantage over the resident types. A 2015 study of colon cancer [44] has suggested an alternative theory of tumor evolution, the so-called Big Bang model...

BACKGROUND Diffusion-weighted imaging (DWI) is a noninvasive method for investigation of tumor histological content. It has been applied for some musculoskeletal tumors and reported to be useful. OBJECTIVES The aim of the present study was to prospectively evaluate the apparent diffusion coefficient (ADC) values of benign and malignant soft tissue tumors and to determine if ADC can help diffe...

ba c k g r o u nd: skin  metastases occur  in  1-5%  of  solid  tumors  and  are  rarely the presenting sign of internal malignancies. certain features in skin lesions raise suspicion of metastasis from solid tumors. c a s e presentation: in this article a 61-year-old woman is presented with erythematous skin nodules  in  upper  abdomen  and  chest. histopathological evaluation  of  lesions sug...

background: tumors involving the hand skeleton are rare. however, a basic knowledge of hand tumors is necessary for every clinician. this is due to the importance of distinguishing typical benign tumors from life or limb threatening malignant ones. methods: this study is a review of 99 cases of osseous hand tumors presented to the department of orthopedic surgery, imam khomeini hospital in tehr...

Solid serous cystadenoma (SCA) of the pancreas is a rare type of pancreatic solid tumors. Postoperative pathological evaluation is of particular importance for distinguishing solid SCA of the pancreas from other pancreatic solid tumors. Here we present 2 cases of solid SCA of the pancreas, both preoperatively diagnosed with pancreatic neuroendocrine tumors. One case had positive OctreoScan test...