Renal Cell Carcinoma or Oncocytoma? The Contribution of Diffusion-Weighted Magnetic Resonance Imaging to the Differential Diagnosis of Renal Masses.

: Renal Cell Carcinoma (RCC) accounts for 85% and oncocytomas constitute 3-7% of solid renal masses. Oncocytomas can be confused, especially with hypovascular RCC. The purpose of this research was to evaluate the contribution of diffusion-weighted imaging (DWI) and contrast-enhanced MRI sequences in the differential diagnosis of RCC and oncocytoma : 465 patients with the diagnosis of RCC and 45 patients diagnosed with oncocytoma were retrospectively reviewed between 2009 to 2020.

Renal Artery Doppler Findings in the Patients with Polyhydramnios before and after the Conservative Treatment.

Objective: The aim of this study was to evaluate the foetal renal blood flow with colour Doppler ultrasonography. Patients with polyhydramnios were investigated for the foetal renal artery pulsatility index (PI) at the beginning of the treatment, and after the conservative treatment in those who reached the normal amniotic fluid index.

Materials And Methods: In this prospective study, 39 foetuses with polyhydramnios were evaluated at gestational weeks 26 to 36.

Evaluation of Enteroneovesical Fistula by 64-Detector CT Enterography: A Case Report.

Enterovesical fistula is an abnormal communication between the bladder and the intestine. The accurate localization of leakage is important for accurate treatment planning. Some imaging techniques can not demonstrate the fistula; therefore, choosing the appropriate imaging technique is necessary.

"Thickened" ligamentum flavum caused by laminectomy.

Objective: The purpose of this study was to evaluate the effect of a laminectomy on the adjacent ligamentum flavum (LF) by measuring LF thickness using magnetic resonance imaging (MRI).

Materials And Methods: A total of 78 patients (31 man, 47 woman) with laminectomy were included in our study. After determination of laminectomy level, measurements were done from the thickest parts of the bilateral LF at the upper level of the laminectomy where bilateral facet joints were evident at the slice.

Choroid plexus separation in fetuses without ventriculomegaly: Natural course and postnatal outcome.

Purpose: To evaluate fetuses with choroid plexus separation without ventriculomegaly in terms of fetal malformations, behavior of the separation during follow-up, and postnatal outcome.

Methods: In total, 172 fetuses with choroid plexus separation without ventriculomegaly were included in this prospective study. Fetal sonography was performed at 2- to 4-week intervals, and detailed physical and neurologic examinations were performed after their delivery.

The limbic degradation of aging brain: a quantitative analysis with diffusion tensor imaging.

Introduction: The limbic system primarily responsible for our emotional life and memories is known to undergo degradation with aging and diffusion tensor imaging (DTI) is capable of revealing the white matter integrity. The aim of this study is to investigate age-related changes of quantitative diffusivity parameters and fiber characteristics on limbic system in healthy volunteers.

Methods: 31 healthy subjects aged 25-70 years were examined at 1,5 TMR.

The use of bronchial arteries in the characterization of primary lung cancer: an MDCT study.

Objective: The purpose of this study was to discuss the use of ipsilateral bronchial artery dilatation when a solitary lung mass is detected on multidetector computed tomography (MDCT).

Materials And Methods: We retrospectively evaluated 55 patients with solitary lung mass. An MDCT scanner was used for the study.

Bouveret syndrome: evaluation with multidetector computed tomography and contrast-enhanced magnetic resonance cholangiopancreatography.

Cholecystenteric fistula is one of the rarest complications of biliary lithiasis, with a frequency of less than 1%. Bouveret syndrome is a gastric outlet obstruction produced by gallstone(s) located in the distal stomach or proximal duodenum. The route of gallstone migration to the bowel is most commonly via a cholecystoduodenal fistula; however, fistulization of the stomach is a rarer variation.

Unusual manifestation of acute retrocecal appendicitis: pericholecystic fluid.

Subhepatic-retrocecal appendicitis is a rare entity in which the diagnosis is challenging. In patients presenting with right abdominal pain with atypical clinical, laboratory and ultrasound (US) findings, acute appendicitis should be eliminated with computed tomography (CT). Multi-detector CT (MDCT) can be used effectively for the diagnosis of retrocecal appendicitis without additional preparation or focused examination.

Real-time elastography for distinguishing angiomyolipoma from renal cell carcinoma: preliminary observations.

Objective: The objective of this study was to determine the diagnostic performance of sonoelastography for differentiating angiomyolipomas from renal cell carcinomas.

Subjects And Methods: Twenty-eight angiomyolipomas and 19 renal cell carcinomas were prospectively examined with real-time elastography. Lesions were classified according to four elastographic patterns on the basis of the distribution of the blue area (representing no strain and hardest tissue component).

Desmoid Tumor Associated With Familial Adenomatous Polyposis: Evaluation With 64-Detector CT Enterography.

Desmoid tumors (DTs) are benign tumors which are not seen very often, and most of the radiologists and clinicians do not know the characteristics of them very well. Correct and early diagnosis of DTs is important for decreasing mortality and morbidity. Computed tomography enterography (CTE) is a new modality for small bowel imaging which combines the improved spatial and temporal resolution of multidetector computed tomography (CT) with large volumes of ingested enteric contrast material to permit evaluation of the small bowel wall and lumen and also the entire abdomen.

A novel biphasic oral contrast solution for enterographic studies.

Purpose: To compare the efficacy and patients' tolerance of a new mixed biphasic oral contrast solution with routine biphasic oral contrast agent in magnetic resonance (MR) enterography (MRE).

Materials And Methods: Thirty-seven patients (group 1) had MRE with the new mixture, whereas 14 patients (group 2) had MRE with biphasic oral contrast agent (lactulose). Magnetic resonance enterography images were evaluated by 2 experienced radiologists.

The effect of morphometric relationship between the glenoid fossa and the humeral head on rotator cuff pathology.

Objective: The aim of this study was to investigate the impact of the morphometric association between the glenoid fossa and the humeral head on rotator cuff pathology.

Methods: Shoulder MRI examinations performed for any cause in study centers between August 2008 and August 2009 were retrospectively evaluated. Shoulder MRI exams having rotator cuff pathology, such as trauma, degeneration, and acromion Type 2, 3 and 4 were excluded.

Periampullary localized pancreatic intraepithelial neoplasia-3 (PanIN-3): evaluation with contrast-enhanced MR cholangiography (MRCP).

Background: The early determination of premalignant lesions of pancreas can prevent unnecessary excessive surgical procedures and can reduce morbidity and mortality. Pancreatic intraepithelial neoplasia-3 (PanIN-3) is a preinvasive form of adenocarcinoma (carcinoma in situ). PanINs have not taken place in the literature of radiology yet, it should be considered in differential diagnosis of pancreatic cystic lesions.

Assessment of lumbar vertebrae morphology by magnetic resonance imaging in osteoporosis.

Objective: To investigate the lumbar spinal morphology in patients with and without osteoporosis by comparing the endplate changes, intervertebral disc changes, and vertebral heights.

Design: This is a retrospective study. Medical records of the 3,530 patients admitted to the Physical Medicine and Rehabilitation outpatient clinics with low back pain between August 2010 and August 2011 were retrospectively reviewed.

Contrast-material-enhanced MR urography in evaluation of postoperative lower urinary tract fistulae and leakages.

Urinary fistulas and leakages of lower urinary tract are serious complications of various surgical procedures. Radiologists need to have enough information about these situations to perform precise diagnosis and treatment. Various techniques [such as intravenous pyelography, ultrasound, computed tomography (CT), CT urography, cystoscopy, cystography and magnetic resonance (MR) imaging] are used for the diagnosis of these conditions.

Evaluation of spontaneous third ventriculostomy by three-dimensional sampling perfection with application-optimized contrasts using different flip-angle evolutions (3D-SPACE) sequence by 3T MR imaging: preliminary results with variant flip-angle mode.

Purpose: This prospective study aimed to evaluate the use of three-dimensional sampling perfection with application-optimized contrasts using different flip-angle evolutions (3D-SPACE) in the diagnosis of spontaneous third ventriculostomy (STV) and to compare it with phase-contrast cine magnetic resonance imaging (PC-MRI).

Methods: PC-MRI and 3D-SPACE images were obtained in 15 patients with hydrocephalus for evaluation of STV as well as in 10 control cases. The presence of STV was evaluated visually by two experienced radiologists on both PC-MRI and 3D-SPACE images, and the results were statistically compared.

Decreased echogenicity of the embryo is correlated with absence of cardiac activity.

Purpose: The purpose of this study was to investigate whether the sonographic echogenicity of embryos is associated with cardiac activity in utero.

Methods: The present study reviewed a total of 164 embryos having a gestational age between 6 and 8 weeks. These embryos were examined by transvaginal ultrasonography and a comparison of their echogenicity was made with respect to those of the placenta and the myometrium.

Real-time sonoelastography of the Achilles tendon: pattern description in healthy subjects and patients with surgically repaired complete ruptures.

Objective: The purpose of this study is to describe the elastographic appearance of the Achilles tendon in healthy subjects and patients with surgically repaired complete ruptures.

Materials And Methods: Nineteen Achilles tendons of 16 amateur footballers with surgically repaired complete ruptures and their contralateral asymptomatic Achilles tendons were assessed with ultrasound and real-time sonoelastography. Additionally, 40 asymptomatic Achilles tendons of 20 healthy amateur footballers were assessed.

Prevalence of scrotal calculi and their relationship with pain.

Purpose: The purpose of this study was to determine the frequency of scrotal calculi in men referred for scrotal ultrasonography (US), to identify any associated pathologies, and to investigate if any relationship exists between scrotal lithiasis and pain.

Materials And Methods: This was a retrospective study in which 4084 scrotal US examinations in 3435 men were evaluated. Scrotal US was performed using a high-frequency linear transducer.

Glenoid axis is not related with rotator cuff tears--a magnetic resonance imaging comparative study.

Purpose: The relationship between glenoid version angle and rotator cuff pathology has been described. However, the effect of glenoid version angle on rotator cuff pathology is still unknown. The aim of this study was to investigate whether there is an impact of glenoid version angle on rotator cuff pathology.

Ischiofemoral impingement: evaluation with new MRI parameters and assessment of their reliability.

Objective: The aim of this study was to describe the magnetic resonance imaging (MRI) findings in patients with ischiofemoral impingement (IFI) and to evaluate the reliability of these MRI findings.

Materials And Methods: Seventy hips of 50 patients with hip pain and quadratus femoris muscle (QFM) edema and 38 hips of 30 control cases were included in the study. The QFM edema and fatty replacement were assessed visually.