objective: the aim of the present study was to estimate crude and age-standardized incidence rates for oral and pharyngeal nonsquamous cell malignant tumors in kerman province over a period of 11 years. materials and methods: the data used in this retrospective population-based study were extracted from the records registered in all pathology centers of kerman province from 1991 to 2001. all co...

Glioblastoma multiforme (GBM) and the mesenchymal GBM subtype in particular are highly malignant tumors that frequently exhibit regions of severe hypoxia and necrosis. Because these features correlate with poor prognosis, we investigated microRNAs whose expression might regulate hypoxic GBM cell survival and growth. We determined that the expression of microRNA-218 (miR-218) is decreased signif...

introduction: different imaging modalities are used to evaluate salivary gland diseases, including tumors. ultrasonography (us) is the preferred method on account of its ease of use, affordability, safety profile, and good tolerance among patients. the aim of this study was to evaluate the role of us in differentiating malignant from benign parotid tumors, in the context of previous controversy...

Solid tumors are abnormal tissues containing tumor and non-tumor cells, also known as tumor stromal cells. However, the malignant potential of tumor stromal cells remains largely unknown. The aim of the present study was to investigate the malignant potential of host bone marrow‑derived stroma cells in transplanted subcutaneous tumors of the glioma stem/progenitor cells (GSPCs) labeled using th...

Typical nephroblastoma (Wilms'tumor) is uncommon within the first 6 months of life. Renal tumors most commonly found in this age constitute of two groups which have a better and worse prognosis, respectively, than typical nephroblastomas. The group of tumors with a better prognosis encompasses congenital mesoblastic nephroma (CMN), fetal rhabdomyomatous nephroblastoma and cystic, partially diff...

this study aimed to investigate the frequency of varicella zoster virus (vzv) in benign and malignant breast tumors. a total of 24 carcinomas and 24 fibroadenomas paraffin embedded tumoral tissue samples were obtained from the pathology sections of toos and firoozgar hospitals in tehran, iran. all samples were collected from patients from june 2011 to february 2012. dna was extracted from all s...

a survey of malignant lymphoid tumors among iranians the frequency. histopathologic features, and clinical aspects of malignant lymphoid tumors. among iranians arc discussed on the basis of 68,000 consecutive biopsies and 1917 autopsies performed over a twenty.five years period in the department of pathology at teheran university. of the 5814 lymph nodes examined on biopsy, 1368 (23%) showed ma...

Introduction/Background The recognition of uterine sarcoma allows correct therapy planning and choice surgical approach. To help to distinguish benign myoma from sarcoma, we assessed the value 6 sonographic criteria (Sarcoma Prediction Score – SPS) in a prospective cohort consecutive patients with masses. Methodology Patients planned for surgery between 2015–2019 presumed myom...

Malignant mesenchymomas are rare soft tissue tumors of mesenchymal origin. We report a case of pleural localization with liposarcomatous, leiomyosarcomatous and osteocartilaginous elements. The treatment associated surgical resection, chemotherapy and radiotherapy. Sixteen months after the diagnosis a metastatic retroperitoneal sarcoma with osteosarcomatous differentiation appeared without any ...

Mesenchymal tumors of the urinary bladder are rare and the majority of them are malignant. We report two cases of leiomyoma of the urinary bladder presenting with symptoms of bladder outlet obstruction. The first patient was managed with staged transurethral resections, and the second with holmium laser transurethral inoculation. The outcome was excellent in both cases. A review of the literatu...