This study aimed to determine whether texture parameters could be used in differentiation between the tumor and the peritumoral tissues based on hybrid 18 F-Fluorodeoxyglucose positron emission tomography/ computed tomography imaging for patients with rectal cancer.Methods: Seven parameters, including heterogeneity, entropy, energy, skewness, kurtosis, standard deviation, and average brightness, were extracted from positron emission tomography/computed tomography scans of 22 patients (12 male and 10 female; mean age, 61 ± 2 years).
Results:The peritumoral tissue had a significantly lower value of the heterogeneity parameter (23%) than the tumor. Tumor size (r = −0.48, P < 0.05) and extramural venous invasion scores (r = 0.64, P < 0.05) correlated with heterogeneity in the peritumoral tissue. There were significant differences (P < 0.05) in the correlation coefficients between men and women.Conclusions: Therefore, we provided additional quantitative information to differentiate the tumor from the peritumoral tissue and indicated possible application for extramural venous invasion evaluation in rectal cancer.
was performed by Kaplan-Meier curves and Log-Rank test.Statistical significance was considered for values of p <0.05.Results: PET CT images of 78 patients were centrally reviewed. All patients are currently alive (OS=100%). After a median follow-up of 60 months (range 17-139) 17 patients (21%) had disease recurrence, with RFS of 60% at 104 months (median not reached). The median time to relapse was 8 months (range 3-39). Splenic involvement, anemia (Hb<12 gr/dl) and bulky disease at diagnosis increased risk of relapse. Patients with EoT DS1 (56 cases) showed 83% RFS at 100 months (median not reached). Median RFS worsened for higher DS: 77 months for DS2 (12 cases), 2 months for DS3 (2 cases), 26 months for DS 4 (3 cases), and 14 months for DS5 (p <0.001) [Shown in figure]. There was a longer time frame to relapse in DS1/2 compared to DS≥3 (median time of 34 and 4 months respectively). Comparing I-
Background: Autoimmune neutropenia (AIN) is common form of neutropenia in children. AIN presents with absolute neutrophil count (ANC) of less than 0.5 x 10 9 /L, but mild infection and spontaneous resolution. AIN is caused by anti-neutrophil antibodies (ANA). Detection of ANA is usually helpful in the diagnosis of AIN, but is controversy about the exclusion of congenital neutropenia or the prediction of outcome. Aims: The purpose of this study was to demonstrate the efficacy of the ANA testing for predicting clinical outcomes and spontaneous resolution of neutropenia in children with neutropenia. Methods: We reviewed the records of 62 patients with neutropenia of less than 1.5 x 10 9 /L who were tested for ANA (positive or negative) in