SUVmax-to-HU ratio in diagnosis of hepatic metastases of colon cancer on FDG PET/CT. A new semiquantitative parameter.

Purpose: We aimed to use new semiquantitative parameter, maximum standardized uptake value (SUVmax)-to-Hounsfield unit density (HU) ratio for differentiation of colonic adenocarcinoma metastases from normal liver parenchyma on fluorine- 18-fluorodeoxyglucose (18F-FDG) positron emission tomography (PET)/computed tomography (CT) fusion images.

Materials And Methods: We retrospectively evaluated 18F-FDG PET/CT images of 97 liver metastases from colonic adenocarcinoma in 32 adult patients. SUVmax-to-HU ratios of the metastases and non-lesion areas were calculated and compared.

Evaluation of renal anomalies, inferior vena cava variations, and left renalvein variations by lumbar magnetic resonance imaging in 3000 patients.

Background/aim: The variations and anomalies of the kidneys besides the variations of the inferior vena cava (IVC) and left renal vein (LRV) are mostly asymptomatic, but they carry potential risks particularly during retroperitoneal surgery and radiological interventions. Our aim was to find the frequencies, types, and sex distribution of renal anomalies and variations of the IVC and LRV utilizing magnetic resonance imaging (MRI). Materials and methods: Between November 2010 and April 2011, a retrospective study was conducted including lumbar spinal MRI of 3000 consecutive patients (1869 females and 1131 males) with a median age of 54 years (range: 9-78 years).

Cyst-to-kidney volume ratio in the sonographic diagnosis of unilateral multicystic dysplastic kidney in children.

Aims: To evaluate the usefulness of the cyst-to-kidney volume ratio determined by ultrasonography (US) in unilateral multicystic dysplastic kidney (MCDK) in children.

Material And Methods: Our study group included 21 children (average age: 431 days) with unilateral MCDK and 22 children (average age: 440 days) with unilateral grade IV hydronephrosis due to ureteropelvic junction obstruction as the control group. All the children underwent transabdominal US.

Initial Fludeoxyglucose (18F) Positron Emission Tomography-Computed Tomography (FDG-PET/CT) Imaging of Breast Cancer - Correlations with the Primary Tumour and Locoregional Metastases.

Backround: We aimed to evaluate initial PET/CT features of primary tumour and locoregional metastatic lymph nodes (LNs) in breast cancer and to look for potential relationships between several parameters from PET/CT.

Material/methods: Twenty-three women (mean age; 48.66±12.

Fluorodeoxyglucose Positron Emission Tomography-Computed Tomography (FDG PET/CT) Findings in an Unusual Case of Multiple Myeloma Presenting with a Large Extra-Axial Intracranial Mass.

Background: We aimed to present unusual cranial FDG PET/CT findings of a 56-year-old female with multiple myeloma (MM).

Case Report: Plain CT images revealed a lytic lesion in the right parietal bone, filled with an oval-shaped, large, extra-axial, extradural, intracranial mass which measured 75×75×40 mm and had smooth borders. The right parietal lobe was compressed by the mass.

Detection of retroaortic left renal vein and circumaortic left renal vein by PET/CT images to avoid misdiagnosis and support possible surgical procedures.

Objective: We aimed to identify retroaortic left renal vein (RLRV) and circumaortic left renal vein (CLRV) by using positron emission tomography/computed tomography (PET/CT) images, to obtain their percentages and to evaluate the effect of gender on their frequencies.

Materials And Methods: Plain CT and fluorine-18-2-fluoro-2-deoxy-D-glucose PET/CT images of 222 consecutive patients who underwent oncological PET/CT imaging were used to detect RLRV and CLRV. The numbers and percentages of total left renal vein (LRV) variations, RLRV and CLRV were obtained.

Ultrasonographic and scintigraphic findings of thyroid hemiagenesis in a child: report of a rare male case.

Thyroid hemiagenesis is a rare congenital anomaly in which one lobe of thyroid gland fails to develop. It is much rarer in males. There is a higher incidence of associated thyroid disorders in patients with thyroid hemiagenesis; therefore early and prompt diagnosis is important for children.

The use of ultrasonography in infantile hypertrophic pyloric stenosis: does the patient's age and weight affect pyloric size and pyloric ratio?

Aims: We aimed to obtain pyloric measurements of our patients with infantile hypertrophic pyloric stenosis (IHPS) using ultrasonography (US) and to evaluate the correlations between age, weight and pyloric size, pyloric ratio (PR).

Material And Methods: We designed a retrospective study including 20 term infants with surgically proven IHPS and studied the ultrasonographically obtained pyloric muscle thickness (PMT), pyloric diameter (width) (PD), pyloric length (PL) and PR (PMT/PD) to determine if there were statistically significant associations between patient age/weight and pyloric measurements.

Results: The mean age of the infants was 38.

Ultrasonographic evaluation of ureteral stones in children: can we use stone width as a predictor of spontaneous passage?

Aims: We aimed to obtain the maximum transverse diameters (widths) of ultrasonographically detectable ureteral stones in children and to evaluate the effect of widths on the rate of spontaneous discharge and on the degree of ipsilateral hydronephrosis.

Material And Methods: We retrospectively evaluated 52 ultrasonographically detected ureteral stones in 51 consecutive patients (32 males, 19 females) with a median age of 9 years (range, 6 months-17 years).

Results: In group 1, in which the stones passed spontaneously (n=29), sonographically measured median and mean widths of ureteral stones were 3.

Incidental extraspinal findings on magnetic resonance imaging of intervertebral discs.

Introduction: We aimed to evaluate pathological extraspinal findings and congenital anomalies/anatomical variations that were incidentally detected on the magnetic resonance imaging (MRI) scans of intervertebral discs, to find the frequencies of these incidental findings, and to emphasise the clinical importance of them.

Material And Methods: A retrospective study including 1031 consecutive patients (730 females and 301 males, with a median age of 46 years) was conducted by evaluating a total of 1106 MRI examinations of intervertebral discs. Examinations were performed with a 1.

Evaluation of the left renal vein variations and inferior vena cava variations by means of helical computed tomography.

Purpose: To evaluate the percentages of the left renal vein (LRV) variations and inferior vena cava (IVC) variations as well as the effect of gender on their frequencies.

Materials And Methods: Contrast-enhanced abdominal helical computed tomography (CT) examinations of 1204 patients were retrospectively evaluated.

Results: The correspondent percentages of the total LRV variations, retroaortic left renal vein (RLRV), and circumaortic LRV were 5.

A rare variation of the heterotaxy syndrome.

Heterotaxy syndrome is a rare, complex, and confusing type of the situs anomalies. It is not possible to estimate the degree of lateralization, isomerism, and rotational variation in these types of cases. Heart and abdominal organ anatomy is specific to the individual, and it should be defined specifically on the basis of each case due to possible cardiac and extracardiac surgical interventions in patients with heterotaxy syndrome.

The efficacy of apparent diffusion coefficient value calculation in differentiation between malignant and benign thyroid nodules.

Purpose: To evaluate the efficacy of apparent diffusion coefficient (ADC) calculation in differentiation between malignant and benign thyroid nodules.

Methods And Materials: A prospective study was conducted in 52 patients. Diffusion-weighted echoplanar imaging was performed and b factors were taken as 0 and 400 s/mm(2).

Computed tomography and magnetic resonance imaging findings in a case with biliary microhamartomas.

Biliary microhamartomas, also known as bile duct hamartomas and von Meyenburg complexes, are benign neoplasms containing cystic dilated bile ducts embedded in fibrous stroma. They develop in hepatobiliary system, do not generally give clinical outcomes, and are detected incidentally. However, they can rarely show malignant transformation.

Wandering spleen in a child with symptoms of acute abdomen: ultrasonographic diagnosis. Case report.

We report the initial and follow-up ultrasonography (US) findings in a pediatric case of wandering spleen with symptoms of acute abdomen, as a rare entity. A four-year-old boy was referred with complaints of blunt abdominal pain, vomiting and fatigue. US detected an oval- shaped, mildly enlarged spleen with inferomedial displacement.

Should bedside sonography be used first to diagnose pneumothorax secondary to blunt trauma?

BACKGROUND.: Our purpose was to evaluate the effectiveness of bedside sonography (US) in the detection of pneumothorax secondary to blunt thoracic trauma. METHODS.

Ultrasonographic findings of intussusception in pediatric cases.

Purpose: We aimed to characterize, by ultrasonography (US), the aspects, locations and the dimensions of intussusceptions in pediatric cases and to compare these data with the clinical findings and therapeutical outcomes.

Materials And Methods: We retrospectively evaluated abdominal US examinations and clinical data of 13 consecutive pediatric patients with intussusceptions. Patients are grouped according to the type of intussusceptions (ileocolic intussusceptions and intussusceptions with colocolic involvement) and according to the modality of treatment (surgical and non-surgical).

Giant mesenteric cyst of gastric origin: a case report with imaging findings.

We present a very rare case of a giant gastric mesenteric cyst with ultrasonography (US) and computed tomography (CT) findings. An eight-year-old boy was referred for treatment of an intraabdominal cyst, known to exist for six years. On abdominal US, a giant, thin-walled, unilocular intraabdominal cyst was demonstrated, extending from the epigastric region to the pelvis and measuring 18 x 15 x 6 cm.

Sprengel deformity: magnetic resonance imaging findings in two pediatric cases.

The characteristics of Sprengel deformity, which is also called congenital high scapula, are malposition and dysplasia of the affected scapula, with possible omovertebral connection. The aim of the present study was mainly to present the magnetic resonance imaging (MRI) findings of two pediatric cases of Sprengel deformity. A 7-year-old girl and a 9-year-old boy with deformities in their right shoulder were studied.

Ultrasonographic diagnosis of congenital hydrometrocolpos in prenatal and newborn period: a case report.

Our purpose is to present the ultrasonographic findings of a rare case of prenatally and postnatally congenital hydrometrocolpos secondary to imperforate hymen. By ultrasonography (US) at 38 weeks of gestation, a retrovesical, 60 x 43 mm pelvic cystic mass, was demonstrated in a female fetus. After delivery, US of the newborn revealed a 77 x 60 mm retrovesical, pear-shaped cystic structure with internal echoes, interpreted as congenital hydrometrocolpos.

Study of the left renal variations by means of magnetic resonance imaging.

Purpose: A prospective study was designed to figure out the percentages of the left renal vein variations using routine lumbar spinal magnetic resonance imaging (MRI) in patients with neurological problems.

Methods: Between March 2010 and October 2010, the study population was recruited from a total of 2,644 consecutive patients who would undergo a routine lumbar spinal MRI examination. In addition to the routine MRI sequences, axial, balanced turbo field echo sequence (BTFE-BH SENSE) was applied after detection of a left renal vein variation.

Retroaortic left renal vein in a case of left adrenal adenoma: radiological findings.

It is important to diagnose retroaortic left renal vein (RLRV) before a probable retroperitoneal surgery in a case of a suspicious adrenal mass. Our purpose is to present the ultrasonography (US), computed tomography (CT), and magnetic resonance imaging (MRI) findings in a case of left adrenal adenoma with a coincidental RLRV and to discuss the clinical importance of their imaging. Abdominal and scrotal US, abdominal CT and MRI were performed for a 50-year-old male patient who was referred with continuous abdominal pain, intractable hypertension, high levels of blood cortisol and proteinuria.

Isolated splenic hydatid disease.

Hydatid disease (HD) continues to be a significant health problem in areas where animal husbandry is common but no proper veterinary control exists. The involvement of the spleen in HD is rare, and isolated splenic involvement is even less common. In this case report, we present isolated splenic HD in a 26-year-old female with complaint of abdominal pain, and we discuss some of the clinical aspects of HD.

Doppler sonography in renal artery stenosis. An evaluation of intrarenal and extrarenal imaging parameters.

A prospective comparison of different direct and indirect Doppler parameters with angiography was performed to determine the most useful Doppler parameters and threshold values for the detection of significant (> or =60%) renal artery stenosis (RAS). The best combination of parameters was found to be the use of direct parameters of peak systolic velocity (PSV) greater than 180 or 200 cm/s and renal aortic ratio (RAR) greater than 3.0 with a sensitivity and specificity at 92% and 88%, respectively.