Precise characterization of a solitary pulmonary nodule using tumor shadow disappearance rate-corrected F-18 FDG PET and enhanced CT.

We aimed to characterize solitary pulmonary nodule (SPN) using imaging parameters for F-18 fluorodeoxyglucose (FDG) positron emission tomography/computed tomography (PET/CT) or enhanced CT corrected by tumor shadow disappearance rate (TDR) to reflect the tissue density.We enrolled 51 patients with an SPN who underwent PET/CT and chest CT with enhancement. The FDG uptake of SPN was evaluated using maximum standardized uptake value (SUVmax) on PET/CT.

Electrical conductivity-based contrast imaging for characterizing prostatic tissues: in vivo animal feasibility study.

Background: Electrical conductivity-based magnetic resonance (MR) imaging may provide unique information on tissue condition because its contrast originates from the concentration and mobility of ions in the cellular space. We imaged the conductivity of normal canine prostate in vivo and evaluated tissue contrast in terms of both the conductivity distribution and anatomical significance.

Methods: Five healthy laboratory beagles were used.

Intrahepatic adrenocortical adenoma arising from adrenohepatic fusion mimicking hepatic malignancy: Two case reports.

Rationale: Intrahepatic adrenocortical adenoma (IAA) arising from adrenohepatic fusion (AHF) is rare and its imaging findings are not well established. Moreover, it is easily misdiagnosed as malignant hepatic tumor in patients at risk of malignancy. Its key finding is the connection between the tumor and adrenal gland.

Intimal flap detected by three-dimensional curved multiplanar reconstruction image in isolated posterior inferior cerebellar artery dissection: a report of two cases.

Background: Spontaneous isolated posterior inferior cerebellar artery (PICA) dissection has been reported more frequently since high-resolution vessel wall magnetic resonance imaging (HR vw-MRI) was introduced to the field. The intimal flap or double lumen, which is commonly reported to be a direct sign of the dissection, is not easily detectable on HR vw-MRI because the size of the PICA is very small and tortuous.

Case Presentation: Two patients with posterior circulation ischemic stroke due to spontaneous isolated PICA dissection underwent HR vw-MRI.

Combined Therapy with Transarterial Chemoembolization and Radiofrequency Ablation for Hepatocellular Carcinoma: Does the Degree of Ethiodized Oil Accumulation within the Tumor Affect the Therapeutic Efficacy?

Purpose: To evaluate the effects of the degree of ethiodized oil accumulation achieved by transarterial chemoembolization followed by radiofrequency (RF) ablation on the treatment efficacy for a single intermediate-sized hepatocellular carcinoma (HCC).

Materials And Methods: A total of 153 consecutive patients who underwent chemoembolization and RF ablation for a single intermediate-sized HCC (2-5 cm) were included. On the basis of the degree of ethiodized oil accumulation in HCC on cone-beam CT images, patients who underwent chemoembolization and RF ablation were classified into 2 groups: compact accumulation (≥ 75%) and noncompact accumulation (< 75%).

Conventional Chemoembolization Plus Radiofrequency Ablation versus Surgical Resection for Single, Medium-Sized Hepatocellular Carcinoma: Propensity-Score Matching Analysis.

Purpose: To retrospectively compare long-term outcomes of conventional chemoembolization plus radiofrequency (RF) ablation vs those of surgical resection in patients with a single 3-5-cm hepatocellular carcinoma (HCC).

Materials And Methods: From January 2008 to December 2017, 139 of 623 patients who underwent surgical resection and 60 of 186 patients who underwent chemoembolization/RF ablation in a single center were compared with respect to local tumor progression (LTP), intrahepatic distant recurrence (IDR), disease-free survival (DFS), overall survival (OS), major complications, and hospital stay before and after propensity-score matching.

Results: Mean follow-up periods were similar in the chemoembolization/RF ablation and surgical resection groups (41.

Multidetector CT findings differ between surgical grades of pancreatic fistula after pancreaticoduodenectomy.

Objectives: To define and correlate multidetector CT (MDCT) findings of pancreatic fistula after pancreaticoduodenectomy with surgical grading based on the 2016 Revised International Study Group of Pancreatic Fistula (ISGPF) classification.

Methods: Between May 2011 and December 2016, 235 patients with periampullary tumor underwent pancreaticoduodenectomy and postoperative MDCT. Patients were classified into three groups (clinically no pancreatic fistula (cNo-PF), grade B, and grade C) according to the ISGPF classification.

Radiological-pathological correlation of malignant teratoma with liposarcomatous transformation: Proven by repeated transthoracic needle biopsy.

A mediastinal germ cell tumor with a sarcomatous component is extremely rare and is accompanied by a poor prognosis. Clinical and radiologic diagnosis is very difficult. Herein, we report a rare case of anterior mediastinal malignant teratoma containing a growing liposarcomatous component and detail the diagnostic process.

Combined Therapy of Transcatheter Arterial Chemoembolization and Radiofrequency Ablation versus Surgical Resection for Single 2-3 cm Hepatocellular Carcinoma: A Propensity-Score Matching Analysis.

Purpose: To compare therapeutic outcomes of radiofrequency (RF) ablation combined with transcatheter arterial chemoembolization vs surgical resection (SR) for single 2-3 cm hepatocellular carcinoma (HCC).

Materials And Methods: Seventy patients underwent combined chemoembolization/RF ablation therapy and 84 underwent SR. Local tumor progression (LTP), intrahepatic distant recurrence (IDR), disease-free survival (DFS), and overall survival (OS) rates, as well as major complications and duration of hospital stay, were compared between groups before and after propensity-score matching.

Anatomic mapping and clinicopathologic analysis of benign acral melanocytic neoplasms: A comparison between adults and children.

Background: The clinicopathologic features of benign acral melanocytic neoplasms (BAMNs) remain poorly understood.

Objective: To define the clinicopathologic features of BAMNs.

Methods: We analyzed clinical data and mapped BAMNs anatomically.

Sonographic Findings of Accessory Breast Tissue in Axilla and Related Diseases.

Accessory breast tissue results from failed regression of primitive mammary tissue and is most often located in the axilla. Accessory breast tissue itself is normal and should not be misdiagnosed as an abnormality. Both benign and malignant diseases that occur in the normal breast can also develop in accessory breast tissue in the axilla.

Localization of bleeding sites in patients with hemoptysis based on their chest computed tomography findings: a retrospective cohort study.

Background: The aim of this study was to propose a localization strategy for bleeding sites in hemoptysis patients using their chest computed tomography (CT) findings.

Methods: Between January 2005 and July 2009, the chest CT findings of 161 hemoptysis patients were retrospectively reviewed. Following chest CT, the lobe with the most prominent ground glass attenuation (GGA) or specific lesions with the potential to cause pulmonary hemorrhage were analysed to develop a localization strategy for bleeding sites.

Prediction of coronary artery calcium progression by FDG uptake of large arteries in asymptomatic individuals.

Purpose: The purpose of this study is to evaluate whether fluorodeoxyglucose (FDG) uptake of the large arteries can predict coronary artery calcium (CAC) progression in asymptomatic individuals.

Methods: Ninety-six asymptomatic individuals who underwent FDG positron emission tomography (PET) and CAC scoring on the same day for health screening and follow-up CAC scoring ≥1 year after baseline studies (mean 4.3 years) were included.

Metabolic biomarkers for non-alcoholic fatty liver disease induced by high-fat diet: In vivo magnetic resonance spectroscopy of hyperpolarized [1-C] pyruvate.

Hyperpolarized C magnetic resonance spectroscopy (MRS) to assess hepatic metabolism in non-alcoholic fatty liver disease (NAFLD) has not been reported. This study searched for cellular metabolism-based biomarkers for NAFLD induced by a high-fat diet (HFD) in rats. Also, correlations of the biomarkers with enzyme levels and histopathology were identified during a 6-week follow-up.

Non-contrast cardiac CT immediately after percutaneous coronary intervention: does it predict the risk of left ventricular remodeling in patients with ST-elevation myocardial infarction?

To assess the clinical utility of non-contrast cardiac CT (CCT) immediately after successful percutaneous coronary intervention (PCI) for predicting the risk of left ventricle (LV) remodeling in the management of patients with acute myocardial infarction (AMI), 35 patients with AMI underwent non-contrast CCT immediately after PCI. Volume and transmural extent of myocardial delayed enhancement (DE) were assessed on non-contrast CCT. Serial echocardiography and serologic biomarkers were evaluated at baseline and at 2 and 12 months after AMI.

Other primary systemic cancers in patients with melanoma: Analysis of balanced acral and nonacral melanomas.

Background: Although other primary systemic cancers in patients with melanoma have been studied, there have been few focusing on acral melanomas.

Objectives: We assessed other primary systemic cancers in patients with acral and nonacral melanomas.

Methods: We analyzed other primary cancers in 452 patients with melanoma from 1994 to 2013.

Ultrasound-Guided Percutaneous Radiofrequency Ablation of Liver Tumors: How We Do It Safely and Completely.

Ultrasound-guided percutaneous radiofrequency (RF) ablation has become one of the most promising local cancer therapies for both resectable and nonresectable hepatic tumors. Although RF ablation is a safe and effective technique for the treatment of liver tumors, the outcome of treatment can be closely related to the location and shape of the tumors. There may be difficulties with RF ablation of tumors that are adjacent to large vessels or extrahepatic heat-vulnerable organs and tumors in the caudate lobe, possibly resulting in major complications or treatment failure.

Differential Chest Computed Tomography Findings of Pulmonary Parasite Infestation Between the Paragonimiasis and Nonparagonimiatic Parasite Infestation.

Objective: The aims of this study were to evaluate the chest computed tomography findings of parasite infestation regardless of pathogen and to compare the differential findings between paragonimiasis and nonparagonimiatic parasite infestation (NPPI).

Methods: Between January 2008 and November 2011, 75 patients (46 men; 52.9 ± 14.

Percutaneous Retrieval of Embolized Amplatzer Septal Occluder after Treatment of Double Atrial Septal Defect: A Case Report.

Embolization of the occlusion device after percutaneous closure of atrial septal defect (ASD) is a potential disastrous complication. The usual site of embolization is the right side of the heart including pulmonary artery, but the device embolization to the extracardiac aorta is extremely rare. Here, we report a successful percutaneous retrieval case of the embolized Amplatzer Septal Occluder (ASO) to the descending thoracic aorta after the successful deployment of two ASO devices in a patient with double ASD.

The Relationship among N-Terminal Pro-B-Type Natriuretic Peptide, High-Sensitivity C-Reactive Protein and Infarct Size in Patients with Acute ST-Elevation Myocardial Infarction.

Background And Objectives: We sought to investigate the relationship between levels of high-sensitivity C-reactive protein (hs-CRP) and N-terminal pro-B-type natriuretic peptide (NT-proBNP) and the infarct size and left ventricular (LV) volume after acute myocardial infarction (MI).

Subjects And Methods: Eighty-six patients with acute ST-elevation MI underwent delayed enhancement multidetector computed tomography immediately after they underwent percutaneous coronary intervention to determine the infarct size. LV function and remodeling were assessed by echocardiography.

Cardiac involvement of churg-strauss syndrome as a reversible cause of dilated cardiomyopathy.

A 31-year-old male who had been treated for Churg-Strauss syndrome (CSS) presented with sudden onset of dysarthria. Brain magnetic resonance imaging (MRI) showed acute multifocal bilateral cerebral infarctions suggesting embolic causes. Cardiac MRI showed dilated cardiomyopathy with severe biventricular dysfunction with intracardiac thrombi, and multiple high signal intensity spots in myocardium of the left ventricle with multifocal delayed enhancement suggesting multifocal myocarditis due to small vessel vasculitis associated with CSS.

Clinico-radiologic findings in primary cutaneous extranodal natural killer/t-cell lymphoma, nasal type mimicking cellulitis of the left arm.

Extranodal natural killer (NK)/T-cell lymphoma is a very rare and aggressive disease characterized histopathologically by an Epstein-Barr virus (EBV)-positive atypical lymphoid cytotoxic infiltrate, extensive vascular destruction, and prominent tissue necrosis. It commonly shows cutaneous lesions that primarily or secondarily mimic cellulitis at the primary site. We report on a very rare case of extranodal NK/T-cell lymphoma, nasal type of skin/soft tissue, in a 64-year-old man, and describe the radiological findings.

Corticosteroid therapy against treatment-related pulmonary toxicities in patients with lung cancer.

Background: With the recent increased use of new anti-neoplastic agents, molecular-targeted drugs and radiation in patients with lung cancer, there has been an increase in the occurrence drug-induced or radiation-induced pulmonary toxicities. We conducted this study to evaluate the clinical characteristics of patients with lung cancer who presented with treatment-related pulmonary toxicities and to analyze the dosage pattern of corticosteroid therapy against them.

Methods: To collect the baseline data from the patients with lung cancer who developed treatment-related pulmonary toxicities, we initially selected those who were prescribed corticosteroids between January 1, 2008 and December 31, 2012.

A rare pleural mucinous cystadenocarcinoma mimicking loculated empyema initially: A case report.

We report a case of pleural mucinous cystadenocarcinoma which was mistaken to be a loculated empyema on chest CT. To the best of our knowledge, this entity has never been previously reported in literature.