PURPOSE: Tumor volume has been thought to be an important predictive factor for significant prostate cancer. We assessed the impact of the tumor volume(TV) and the tumor percentage(TP) of radical prostatectomy specimens on the pathological variables and the oncological outcome. MARERIALS AND METHODS: The tumor percentage and tumor volume were calculated for 525 cases by a single pathologist who determined the volume based on the surface area of the slides involved by tumor of the prostate. Univariate and multivariate logistic regression analyses were used to characterize the association of TP categories(<5%, 5-10%, 11-20% and >20%) and TV(<1.8cc, 1.8-3.7cc, 3.8-7.5cc, >7.5cc) with the clinicopathological variables. Biochemical recurrence(BCR) was estimated using Kaplan-Meier analysis and Cox's hazard regression model. RESULTS: The mean prostate cancer volume was 6.5+/-8.5cc(median: 3.8, range: 0.04-73.8) and the mean percent tumor composition was 0.17+/-0.19 (median: 0.1, range: 0.01-0.95). A higher tumor volume and a higher tumor percentage were associated with extra-capsular extension(ECE), a positive surgical margin(PSM), a higher pT stage and a higher prostate-specific antigen(PSA) Gleason score(all p<0.05). In addition, TP was the independent predictor of ECE(adjusted odds ratio(OR): 22.66, 95% confidence interval(CI): 1.801-285.079, p=0.016), but the tumor volume was not associated with ECE on the multivariate logistic analyses. On the Kaplan-Meier analysis, but not on the Cox-hazard analyses, the TP did demonstrate a significant association with biochemical recurrence(p=0.035), yet the TV did not reach statistical significance(p=0.190). CONCLUSIONS: Our data indicates that the tumor percentage had a significant effect on the BCR on the Kaplan-Meier analysis. The tumor percentage rather than the tumor volume might be more useful to predict the prognosis of prostate cancer.
Kaplan-Meier Estimate ; Logistic Models ; Prognosis ; Prostate ; Prostatectomy ; Prostatic Neoplasms ; Recurrence ; Tumor Burden

PURPOSE: To evaluate the HRCT findings of hypersensitive pneumonitis and to correlate the findings with the results of the pulmonary function test (PFT). MATERIALS AND METHODS: Seven patients in whom hypersensitive pneumonitis was histologically confirmed (by transbronchial lung biopsy in two, thoracoscopic lung biopsy in one, open lung biopsy in two, and typical clinical and laboratory findings in two) were involved in this study. Their radiological patterns were assessed by HRCT and the extent of each finding was evaluated semi-quantitatively and correlated with the results of the pulmonary function test. RESULTS: The HRCT findings were as follows: lobular overinflation (n = 7), ground glass attenuation (n = 7), centrilobular nodule (n = 6), reticular opacity (n = 5), interlobular septal thickening (n = 3), consolidation (n = 2), and irregular subpleural line (n = 1). Five patients showed lower lung predominance and two, middle lung predominance. In all, a restrictive pattern and diminished diffusion capacity was noted. The grade score of reticular opacity showed significant correlation with forced vital capacity and forced expiratory volume. There was, however, no significant correlation between other HRCT findings and PFT results. Two patientsin whom lobular overinflation associated with parenchymal fibrosis was noted showed a decreased maximal midexpiratory flow rate of 25 -75. CONCLUSION: Lobular overinflation, ground-glass attenuation and centrilobular nodules are commonly observed in hypersensitive pneumonitis. The only significant correlation between each HRCT finding and the pulmonary function test was that between reticular opacity and both forced expiratory volume and forced vital capacity. In cases of chronic hypersensitive pneumonitis presenting as pulmonary fibrosis, associated lobular overinflation could be helpful for differential diagnosis.
Alveolitis, Extrinsic Allergic* ; Biopsy ; Diagnosis, Differential ; Diffusion ; Fibrosis ; Forced Expiratory Volume ; Glass ; Humans ; Hypersensitivity* ; Lung ; Maximal Midexpiratory Flow Rate ; Pneumonia ; Pulmonary Fibrosis ; Respiratory Function Tests* ; Vital Capacity

It is well known that intracranial hemangiopericytoma commonly metastasizes elsewhere in the body, especially bone and lung. However, brain metastasis of extracranial hemangiopericytoma is very rare. The authors report a case of intracranial metastatic hemangiopericytoma from pelvis in a 41 year old woman. Neurogic symptoms developed 14 months after discovering the pelvic mass. After surgical excision, the clinical course was improved.
Adult ; Brain ; Female ; Hemangiopericytoma* ; Humans ; Lung ; Neoplasm Metastasis* ; Pelvis*

BACKGROUND/AIMS: Gout is a common inf lammatory arthritis triggered by the crystallization of uric acid in the joints. Serum uric acid levels are highly heritable, suggesting a strong genetic component. Independent studies to confirm the genetic associations with gout in various ethnic populations are warranted. We investigated the association of polymorphisms in the ABCG2 and SLC2A9 genes with gout in Korean patients and healthy individuals. METHODS: We consecutively enrolled 109 patients with gout and 102 healthy controls. The diagnosis of gout was based on the preliminary criteria of the America College of Rheumatology. Genomic DNA was extracted from whole blood samples. We identified single nucleotide polymorphism (SNP) changes in the ABCG2 and SLC2A9 genes using a direct sequencing technique. rs2231142 in ABCG2 and rs6449213 and rs16890979 in SLC2A9 and nearby regions were amplified by polymerase chain reaction. RESULTS: Patients with gout had significantly higher A/A genotype (29.3% vs. 4.9%, respectively) and A allele (52.8% vs. 26.5%, respectively) frequencies of rs2231142 in ABCG2 than did controls (chi2 = 29.42, p < 0.001; odds ratio, 3.32; 95% confidence interval, 2.11 to 5.20). We found novel polymorphisms (c.881A>G and c.1002+78G>A) in the SLC2A9 gene. The univariate logistic regression analysis revealed that the c.881A>G and c.1002+78G>A SNPs were significantly higher in patients than in controls. CONCLUSIONS: We demonstrated a significant association between rs2231142 in the ABCG2 gene and gout and identified novel SNPs, c.881A>G and c.1002+78G>A, in the SLC2A9 gene that may be associated with gout in a Korean population.
ATP-Binding Cassette Transporters/*genetics ; Arthritis, Gouty/blood/diagnosis/ethnology/*genetics ; Asian Continental Ancestry Group/genetics ; Biomarkers/blood ; Case-Control Studies ; Chi-Square Distribution ; Gene Frequency ; Genetic Association Studies ; Genetic Predisposition to Disease ; Glucose Transport Proteins, Facilitative/*genetics ; Haplotypes ; Humans ; Logistic Models ; Neoplasm Proteins/*genetics ; Odds Ratio ; Phenotype ; *Polymorphism, Single Nucleotide ; Republic of Korea ; Risk Factors ; Uric Acid/blood

Serum creatinine level is the most commonly used indices for assessment of glomerular filtration rate (GFR), even though these indices have been shown to have some limitations in clinical practice. We investigated the diagnostic efficacy of serum cystatin C compared to that of serum creatinine levels and identified the relating factors associated with changes in serum cystatin C levels in gout patients with renal impairment. A total of 68 gouty patients with renal impairment were enrolled in this study. Diagnostic efficacy of serum cystatin C levels was evaluated through non-parametric receiver operating characteristic (ROC) analysis. The risk factors for changes in serum cystatin C levels were confirmed using multivariate regression analysis. With 24-hr urine creatinine clearance (Ccr) as the reference for GFR, 1/cystatin C (r=0.702, P<0.001) showed a significantly higher correlation with Ccr than 1/creatinine (r=0.665, P<0.001). Multivariate correlation analysis demonstrated that the clinical parameters for increased serum cystatin C are a higher stage of chronic kidney disease, older age, use of allopurinol, and lower high density lipoprotein-cholesterol. The area under the curve (AUC) at ROC plots identified that of serum cystatin C was significantly greater than that of serum creatinine (AUC 0.804 of cystatin C and AUC 0.745 of creatinine). The study suggests that serum cystatin C is a reliable endogenous marker for the assessment of renal function or GFR in gout patients with renal impairment.
Age Factors ; Aged ; Allopurinol/therapeutic use ; Area Under Curve ; Biological Markers/metabolism ; Cholesterol, HDL/blood ; Creatinine/blood/urine ; Cystatin C/*blood ; Glomerular Filtration Rate ; Gout/complications/*diagnosis ; Gout Suppressants/therapeutic use ; Humans ; Male ; Middle Aged ; ROC Curve ; Renal Insufficiency/complications/*diagnosis ; Risk Factors

The variability of cardiovascular abnormalities is one of the characteristics of systemic lupus erythematosus (SLE). Among the cardiovascular manifestations, hypertension is reported in 14% to 58.1% of patients in diverse ethnic populations, and remains a clinically important issue due to its close relationship with early mortality in patients with SLE. The development of hypertension in patients with SLE has been associated with advanced lupus-related renal disease and the medications used for the treatment of lupus. Malignant hypertension is a serious complication of hypertension; it rarely occurs in patients with SLE. However, it can occur in patients with other complicated medical conditions such as the antiphospholipid antibody syndrome (APS) or cardiac tamponade. Here, we report the case of a patient with SLE and malignant hypertension with hypertensive retinopathy that initially presented without clinical evidence of APS or hypertensive nephropathy.
Adult ; Female ; Humans ; Hypertension, Malignant/*diagnosis/*etiology ; Lupus Erythematosus, Systemic/*complications/*diagnosis ; Lupus Nephritis/complications/diagnosis ; Retinal Diseases/*diagnosis/*etiology

No abstract available.
Pyoderma ; Pyoderma Gangrenosum

Decades of accumulated knowledge and improved comprehension of various perspectives on rheumatoid arthritis (RA) pathophysiology has led to the development of new biologic agents that inhibit a specific component of the RA inflammatory process. Especially during the last two decades, several epochal agents which target tumor necrosis factor-alpha, interleukin-1, interleukin-6, CD20-expressing B cell, and cytotoxic T lymphocyte antigen-4 were used in the management of RA and other autoimmune diseases with highly comparable efficacy and safety. Moreover, dozens of innovative agents queue up for clinical trials day by day. Herein, we review the current scenario of RA management in terms of pathogenesis and targeted molecular pathways, and some important controversies in this field as well. Based on the complications that these kinds of diseases pose, it is highly reasonable to hope that further improved therapies and more tailored drugs for RA will be introduced in the near future.
Arthritis, Rheumatoid ; Autoimmune Diseases ; Comprehension ; Interleukin-1 ; Interleukin-6 ; Lymphocytes ; Tumor Necrosis Factor-alpha

BACKGROUND/AIMS: There is controversy related to the role of smoking in affecting the clinical features of patients with Behcet's disease (BD). The aim of this study was to investigate the effect of smoking on clinical manifestations in Korean BD patients. METHODS: We enrolled 131 patients with BD who fulfilled the International Study Group (ISG) criteria of 1990. The disease-related clinical features of BD-oral ulcers, genital ulcers, ocular lesions, arthritis, vascular lesions, gastrointestinal lesions-and central nerve lesions, smoking history, disease duration, and the presence of HLA-B51 were retrospectively assessed through medical record reviews and patient interviews. Statistical analysis was performed using Chi-square, Fisher's exact, or student t-test, if appropriate. RESULTS: The frequencies of vascular and gastrointestinal lesions in smokers were significantly increased compared to those in non-smokers (p=0.040, OR=3.341, 95% CI 1.083-10.305; p=0.012, OR=3.878, 95% CI 1.379-10.906, respectively). Male smokers developed vascular lesions more frequently compared to female smokers, male non-smokers, and female non-smokers (p=0.025, OR=3.896, 95% CI 1.245-12.196). Moreover, smoking, male sex, and positive HLA-B51 may be risk factors for the development of gastrointestinal lesions in BD. Venous lesions were more frequently found in male smokers compared with other patients (p=0.038). CONCLUSIONS: Smoking may be associated with the development of vascular and gastrointestinal lesions in Korean BD patients. A large population prospective assessment of the clinical effect of smoking on BD is needed.
Arthritis ; Female ; HLA-B51 Antigen ; Humans ; Male ; Medical Records ; Retrospective Studies ; Risk Factors ; Smoke ; Smoking ; Ulcer

Purpose: Ethanol elicits several inflammatory responses and affects the innate immune response. The aim of this study was to identify the mechanism by which ethanol affects uric acid-induced NLR family pyrin domain-containing 3 (NLRP3) inflammasome activation by regulation of aryl hydrocarbon receptor (AhR) and thioredoxin-interacting protein (TXNIP). Materials and Methods: Human myeloid leukemia cells (U937 cells) were used to assess the role of ethanol in NLRP3 inflammasome activation induced by monosodium urate (MSU) crystals. Expression of target molecules, such as NLRP3 inflammasome components, AhR, and TXNIP, were measured using quantitative real-time PCR and Western blot analyses. The effect of ethanolinduced TXNIP on the NLRP3 inflammasome was assessed in human macrophages transfected with TXNIP siRNA. Results: U937 cells treated with 100 mM ethanol for 24 h induced NLRP3 and interleukin (IL)-1β expression. Ethanol increased reactive oxygen species generation in a time- and dose-dependent manner. AhR mRNA expression was downregulated in U937 cells treated with 100 mM ethanol, whereas CYP1A1 mRNA expression increased. Treatment with ethanol increased NLRP3 and IL-1β mRNA and protein expression in U937 cells exposed to 1.0 mg/mL of MSU crystals for 24 h. TXNIP expression in U937 cells incubated with both 100 mM ethanol and 1.0 mg/mL of MSU crystals was significantly higher than in cells incubated with MSU crystals alone. Treatment with 100mM ethanol for 24 h downregulated NLRP3 and IL-1β expression in MSU crystal-activated U937 cells transfected with TXNIP siRNA, compared to those with scramble siRNA. Conclusion Ethanol stimulates uric acid-induced NLRP3 inflammasome activation through regression of AhR and upregulation of TXNIP.