Congenital absence of internal carotid artery with intercavernous anastomosis: Case report and systematic review of the literature.

The absence of an internal carotid artery is a rare congenital anomaly. In the absence of the internal carotid artery, collateral circulations develop through the circle of Willis, persistent embryonic arteries or transcranial collaterals of the external carotid artery. Six pathways of collateral circulation have been described.

Diffusion-weighted imaging in the head and neck region: usefulness of apparent diffusion coefficient values for characterization of lesions.

Purpose: We aimed to evaluate the role of apparent diffusion coefficient (ADC) values calculated from diffusion-weighted imaging for head and neck lesion characterization in daily routine, in comparison with histopathological results.

Methods: Ninety consecutive patients who underwent magnetic resonance imaging (MRI) at a university hospital for diagnosis of neck lesions were included in this prospective study. Diffusion-weighted echo-planar MRI was performed on a 1.

The investigation of correlation between semen analysis parameters and intraparenchymal testicular spectral Doppler indices in patients with clinical varicocele.

Objectives: Our aim was to evaluate the effect of clinical varicocele on testicular microcirculation measured by spectral Doppler analysis and investigate the correlation between Doppler ultrasonographic findings and semen parameters.

Methods: Fifty patients who received a diagnosis of clinical varicocele in the Urology Department of our university hospital were enrolled in this prospective study. Varicocele grades were determined according to sonographic parameters, and a scrotal vein with a diameter of 2.

Color Doppler Evaluation of the Retrobulbar Hemodynamic Changes in Chronic Obstructive Pulmonary Disease: COPD and Retrobulbar Hemodynamic Changes.

The aim of this study was to evaluate the hemodynamic changes in the extraocular orbital vessels of the patients with chronic obstructive pulmonary disease (COPD), using color Doppler ultrasonography, and to compare the results with those of healthy control subjects. The control group consisted of 35 healthy subjects who had no systemic problems, while the study group consisted of 60 patients with the diagnosis of COPD. Patients with COPD were grouped according to the Global Initiative for Chronic Obstructive Lung Disease (GOLD).

Role of O-(2-18F-fluoroethyl)-L-tyrosine PET as a diagnostic tool for detection of malignant progression in patients with low-grade glioma.

Unlabelled: In patients with low-grade glioma (LGG) of World Health Organization (WHO) grade II, early detection of progression to WHO grade III or IV is of high clinical importance because the initiation of a specific treatment depends mainly on the WHO grade. In a significant number of patients with LGG, however, information on tumor activity and malignant progression cannot be obtained on the basis of clinical or conventional MR imaging findings only. We here investigated the potential of O-(2-(18)F-fluoroethyl)-L-tyrosine ((18)F-FET) PET to noninvasively detect malignant progression in patients with LGG.

Primary pulmonary sarcoma metastasising to the skin during pregnancy.

Lung cancer during pregnancy is a rare situation which is being increasingly reported during the past two decades due to a rising trend of cigarette smoking among young women and the tendency to delay pregnancy to a later age in life. We describe the case of a 32-year-old woman with primary pulmonary sarcoma, diagnosed at 31st week of pregnancy. X-ray chest and thoracic magnetic resonance imaging revealed a 9 x 6 cm mass in the left mediastinum, with tracheal shift, and pleural effusion.

Diagnostic values of detrusor wall thickness, postvoid residual urine, and prostate volume to evaluate lower urinary tract symptoms in men.

Purpose: This prospective, controlled clinical study aimed to assess the diagnostic values of detrusor wall thickness (DWT), postvoid residual urine volume (PVR), and prostate volume in men with lower urinary tract symptoms (LUTS).

Materials And Methods: During an 18-month period, a total of 243 males were included in the study. Three groups were assessed due to their International Prostate Symptom Score (IPSS): men with normal lower urinary tracts (n = 51; control group), men with mild LUTS (n = 60; Group 1), and men with moderate to severe LUTS (n = 132; Group 2).

Acute tetraventricular hydrocephalus caused by mumps meningoencephalitis in a child.

Mumps is one of the common causes of childhood aseptic meningitis and encephalitis. Although central nervous system involvement is a common manifestation, hydrocephalus is a very rare complication of mumps, with just a few cases reported in the literature to date. Here we report on an 8-year-old boy with acute tetraventricular hydrocephalus caused by mumps meningoencephalitis and treated by external ventricular drainage and following ventriculoperitoneal shunt.

MRCP vs. ERCP in the evaluation of biliary pathologies: review of current literature.

Objective: Recently developed magnetic resonance (MR) techniques permit fast and correct imaging of the entire biliary tree with a high spatial resolution. The aim of this study was to compare the diagnostic potential of one of these new MR sequences in magnetic resonance cholangiopancreatography (MRCP) procedure and endoscopic retrograde cholangiopancreatography (ERCP) with review of current literatures.

Methods: A total of 295 patients were enrolled in this study prospectively.

The fate of patellar tendon and infrapatellar fat pad after arthroscopy via central portal.

Central patellar (CP) portal is an accessory portal in arthroscopic knee surgery, which generally is considered to be safe. In this cross sectional study, we aimed to delineate the clinical and radiological outcome of patellar tendon (PT) and Hoffa's fat pad after the use of this approach. From our hospital records, patients who underwent arthroscopy via CP portal were identified and were invited for the study.

MR imaging features of foot involvement in patients with psoriasis.

Objective: To determine alterations of the soft tissues, tendons, cartilage, joint spaces, and bones of the foot using magnetic resonance (MR) imaging in patients with psoriasis.

Materials And Methods: Clinical and MR examination of the foot was performed in 26 consecutive patients (52 ft) with psoriasis. As a control group, 10 healthy volunteers (20 ft) were also studied.

Unnoticed dysautonomic syndrome of the face: Harlequin syndrome.

Harlequin sign and harlequin syndrome, which are used interchangeably in the literature, are characterized by sudden onset of hemifacial sweating and flushing, induced by exercise and heat. Hemifacial sweating and flushing with normal ocular sympathetic innervation, known as harlequin syndrome, is rarely associated with tonic pupils, parasympathetic oculomotor lesion and pre- or postganglionic sudomotor sympathetic deficit. In the literature, hemifacial sweating and flushing in patients with apparently abnormal ocular sympathetic innervation has been defined as harlequin sign.

Enhancement kinetics of normal ovaries on dynamic contrast-enhanced MR imaging.

Objective: The objective was to determine the enhancement kinetics of the normal ovaries in healthy women on dynamic contrast-enhanced magnetic resonance (DCE-MR) imaging.

Method: Twenty-one women who had normal ovulatory cycles (volunteers; mean age=26.3 years, range=20-35), normal hormone profile, and apparently normal ovaries on ultrasonographic scan underwent DCE-MR imaging on a 1.

Degenerative disc disease of the lumbar spine: a prospective comparison of fast T1-weighted fluid-attenuated inversion recovery and T1-weighted turbo spin echo MR imaging.

Objective: To compare fast T1-weighted fluid-attenuated inversion recovery (FLAIR) and T1-weighted turbo spin-echo (TSE) imaging of the degenerative disc disease of the lumbar spine.

Materials And Methods: Thirty-five consecutive patients (19 females, 16 males; mean age 41 years, range 31-67 years) with suspected degenerative disc disease of the lumbar spine were prospectively evaluated. Sagittal images of the lumbar spine were obtained using T1-weighted TSE and fast T1-weighted FLAIR sequences.

Magnetic resonance neurography diagnosed brachial plexitis: a case report.

Idiopathic brachial plexitis is a rare disorder presenting with pain and weakness in the shoulder girdle and upper extremity. Idiopathic brachial plexitis can mimic other conditions that cause acute pain and weakness around the shoulder, and its diagnosis can be challenging. There is no special test for the diagnosis of idiopathic brachial plexitis, although electromyography may be useful.

MR imaging features of foot involvement in ankylosing spondylitis.

Objective: To determine alterations of the soft tissue, tendon, cartilage, joint space, and bone of the foot using magnetic resonance (MR) imaging in ankylosing spondylitis (AS) patients.

Materials And Method: Clinical and MR examination of the foot was performed in 23 AS patients (46 feet). Ten asymptomatic volunteers (20 feet) were studied on MR imaging, as a control group.

[Brown tumor of the maxillary sinus: a case report].

Brown tumor of the paranasal sinuses is rare. It is a benign fibro-osseous lesion, typically presenting as an expansile mass that leads to a cortical defect. We presented the radiological findings of a brown tumor of the right maxillary sinus in a 13-year-old boy who presented with complaints of swelling in the right maxillary region, headache, and epistaxis.

[The role of three dimensional MR myelography in lumbar discogenic disease].

Purpose: To evaluate the role of the three dimensional (3D) MR myelography (MRM) in the diagnosis of the lumbar discogenic disease compared with conventional MR imaging.

Materials And Methods: Fifty consecutive patients with clinical symptoms of lumbar disc herniation were enrolled for the study. Conventional MR imaging and coronal 3D MRM were performed on a 1.

Polycystic ovary syndrome: dynamic contrast-enhanced ovary MR imaging.

Objective: to determine the enhancement behaviour of the ovaries in women with polycystic ovary syndrome (PCOS) by dynamic contrast-enhanced magnetic resonance (DCE-MR) imaging and to compare these data with those of normal ovulating controls.

Method: 24 women with PCOS and 12 controls underwent DCE-MR imaging. Dynamic images were acquired before and after injection of a contrast bolus at 30 s and the min of 1, 2, 3, 4 and 5.

Radiologic aspects of abdominal hydatidosis in children: a study of 31 cases in Turkey.

Objective: To determine the location and radiological characteristics in children with abdominal hydatid disease (HD).

Materials And Methods: Thirty-one children (average age: 7.2 years) with abdominal HD were studied.