Diagnostic Value of F-FDG-PET/CT in Patients with FUO.

Conventional diagnostic imaging is often ineffective in revealing the underlying cause in a considerable proportion of patients with fever of unknown origin (FUO). The aim of this study was to assess the diagnostic value of fluorine-18 fluorodeoxyglucose positron emission tomography/computed tomography (F-FDG-PET/CT) in patients with FUO. We retrospectively reviewed F-FDG-PET/CT scans performed on 50 consecutive adult patients referred to our department for further investigation of classic FUO.

Alterations of bone mineral metabolism of children with different cell lineage types of acute lymphoblastic leukaemia under chemotherapy.

Background: Children with haematological malignancies such as acute lymphoblastic leukaemia (ALL) may have alteration of bone mineral metabolism therefore increased risk for osteopenia and osteoporosis.

Patients And Methods: The purpose of this study was to examine the alterations of bone mineral metabolism in two groups of children (n=42) according to immunophenotyping (B-cell type, T-cell type) both quantitative (bone mineral density z-scores) and qualitative (serum osteocalcin - OC and carboxyl-terminal telopeptide of human type I collagen - ICTP) during diagnosis (T=0), after the intensified chemotherapy period (T=0.5) and the consolidation period (T=1).

Evaluation of popliteal arteries with CT angiography in popliteal artery entrapment syndrome.

Background: Popliteal artery entrapment is an uncommon clinical entity that occurs due to compression of the popliteal artery by adjacent muscle and tendinous structures. Early diagnosis should be established through a combined approach of careful physical examination and history-taking, duplex ultrasonography, and CT angiography.

Patients And Methods: We have studied retrospectively 16 patients of popliteal artery entrapment syndrome, 9 men and 7 women.

Enhancement of virchow-robin spaces. An MRI evaluation.

Virchow-Robin spaces are enclosed spaces filled with interstitial fluid and covered with pia that accompany arteries, arterioles, veins and venules as they perforate the brain. They are round, linear or punctuate areas depending on the image that parallel cerebrospinal fluid attenuation or signal intensity. They are classically described as isointense to cerebrospinal fluid on images obtained with all pulse sequences.

Enhancement of robin-virchow spaces MRI evaluation.

The perivascular spaces are normally microscopic. Even in normal brain some Robin-Virchow spaces are usually seen in the area of substantia innominata at the level of anterior commissure. Many pathologic states result in abnormal dilatation with an increased number of spaces visible on MRI imaging.

Traumatic pulmonary pseudocysts: CT findings.

Traumatic pulmonary pseudocyst constitutes an uncommon, though well recognized, manifestation of closed chest trauma. It is usually encountered in young patients, whose compliant chest wall permits the transmission of great compressive forces to the lung parenchyma and the laceration of the latter. Traumatic pulmonary pseudocyst is usually detected during the imaging evaluation of multi-injured patients with the use of computed tomography, as it is often not apparent in the initial supine anteroposterior chest radiographs.

Falx Cerebri Ossification: CT and MRI Evaluation.

During the last three years, CT and MRI brain scans of 40 patients revealed falx cerebri partial ossification as an incidental finding. The patients had been admitted for brain CT and MRI for several reasons. In most cases, there was no problem in the differential diagnosis of falx cerebri ossification during interpretation of the cases.

Low conjunction of the cystic duct with the common bile duct: does it correlate with the formation of common bile duct stones?

Background: This study aimed to evaluate the accuracy of magnetic resonance cholangiography (MRC) in detecting variants of low cystic duct conjunction, which can be a source of confusion during surgery when unrecognized.

Methods: All cases with both MRC and endoscopic retrograde cholangiography (ERC) indicating suspected common bile duct stones between January 1999 and January 2004 were retrospectively reviewed by investigators blinded to the final diagnosis. Assessment with ERC was regarded as the gold standard.

Bone mineral density in survivors of childhood acute lymphoblastic leukemia.

The aim of our study was to evaluate bone metabolism with measurement of bone mineral density (BMD) after management (chemo-, radiotherapy) for childhood acute lymphoblastic leukemia (ALL). Bone mineral density (g/cm2) of lumbar spine was measured by dual energy X-ray absorptiometry (Norland bone densitometer) in 18 children with ALL and a median of 34 months' post-diagnosis with no history of relapse, secondary malignancy, or transplantation. In addition, patients' BMDs were correlated with particular attention to age, sex and time (years) from completion of chemotherapy.

Evaluation of bone metabolism in children with acute lymphoblastic leukemia after induction chemotherapy treatment.

Osteopenia and osteoporosis are currently receiving particular attention as late effects of therapy in survivors of childhood acute lymphoblastic leukemia (ALL). The aim of this study was to evaluate abnormalities in bone mass and mineral homeostasis in children with ALL after induction therapy (during consolidation treatment). Lumbar spine (L2-L4) bone mineral density (BMD, g/cm(2)) was measured by dual energy X-ray absorptiometry in 20 children with ALL, a median of 25.

MR cholangiography in the evaluation of patients with duodenal periampullary diverticulum.

Objective: This retrospective study evaluates the relationship between periampullary duodenal diverticula and the common bile duct (CBD).

Materials And Methods: The patients were examined with HASTE breath hold MR cholangiography (MRC) using a 1 T Siemens Expert Plus Scanner. Axial T2-weighted images were also obtained in all patients.

Arachnoid cyst of the frontal part of the temporal lobe producing exopthtalmos CT and MRI evaluation.

Twenty-three patients with an arachnoid cyst in the frontal part of the temporal bone, which produced exopthtalmos, were evaluated with CT and MRI. The majority of the patients had the peak of the bowing of the bony orbit wall in the posterior third (20/23) and only three in the middle. Arachnoid cyst are classified as small (13/23), medium (5/23) or large (5/20) size.