background: cox proportional hazard (cph) model is the most widely used model for survival analysis. when there are unobserved/unmeasured individuals factor, then the results of the cox proportional hazard model may not be reliable. the purpose of this study was to compare the results of cph and frailty models in breast cancer (bc) patients. methods: a historical cohort study was carried out us...

background: more than 250,000 people die annually of pancreatic cancer, worldwide. the highest incidence and mortality rates of pancreatic cancer are reported in developed countries. in developing countries the rate have been stabilizing over the past two decades but in countries which rates have been low for decades is now increasing. recognizing pancreatic cancer's risk factors and its preven...

BACKGROUND AND PURPOSE Oligodendrogliomas with 1p/19q chromosome LOH are more sensitive to chemoradiation therapy than those with intact alleles. The usefulness of dynamic susceptibility contrast-PWI-guided ¹H-MRS in differentiating these 2 genotypes was tested in this study. MATERIALS AND METHODS Forty patients with oligodendrogliomas, 1p/19q LOH (n = 23) and intact alleles (n = 17), underwe...

Inguinal hernia and colonic neoplasm are usual diseases. However, colonic neoplasm occurring in an inguinal hernia sac is rare. Pre-operation diagnosis and appropriate surgical intervention in these patients remain a technical challenge for surgeon. Clinicians must have a high index of suspicion for these cases and early management can ensure excellent prognosis. In this article, we report a ca...

aim :  this study aimed to compare the recurrence rate, mortality, and morbidity of curative resection of distal adenocarcinoma of the stomach between total gastrectomy (tg) and subtotal gastrectomy (stg). background : the choice between tg and stg for adenocarcinoma of the lower third of the stomach is still a matter of debate and controversy among surgeons. patients and methods : hospital rec...

conclusions psa, psa density, and gleason score should be considered together in order to more accurately predict the adverse pathologic features of prostate cancer. methods we conducted a cross-sectional study of 105 patients with localized prostate cancer who underwent radical prostatectomy between 2006 and 2013. we recorded gleason scores and psa levels, in addition to the results of patholo...

background: gliomas are the most common primary neoplasms of the central nervous system. relative cerebral blood volume (rcbv) could estimate high-grade gliomas computed with dynamic susceptibility contrast mr imaging which it is artificially lowered by contrast extravasation through a disrupted blood-brain barrier. objectives: our intent was to clarify the usefulness of diffusion-weighted magn...

we present here a 32-year-old male with advanced lately diagnosed, right sided retroperitoneal mass, which had been already treated due to progressive muco-cutaneous lesions clinically consistent with psoriasis, during recent four years. the advanced retroperitoneal mass resected surgically and reported as hyaline-vascular castleman disease with a dense focus of coarse calcification, on histopa...

background: ovarian fibroma is the most common benign solid tumor of the ovary, which is often difficult to diagnose preoperatively. the choice treatment for ovarian fibroma is surgical removal, but discussions for the operative approach, laparoscopic or open, in the literature seem to be scant. case presentation: we presented a unique clinical experience of laparoscopic approach to a case of 1...