RESUMEN
PURPOSE: In this study we aimed to compare and evaluate the efficacies of the low and high b value diffusion weighted imaging (DWI) sequences with three different T2-weighted (T2W) sequences. MATERIALS AND METHODS: 255 liver lesions of 147 patients who had undergone MR examinations of the upper abdomen were evaluated. A maximum number of 4 lesions was taken for consideration in patients with multiple lesions. Low and high b valued DWI and 3 different T2W sequences (SSFSE, FIESTA, and PROPELLER FSE) were utilized. The evaluations were done by 3 different radiologists, by utilizing the double blind principle. RESULTS: The lesion detection performances of the b 0 DWI, b 600 DWI, FIESTA T2W, SSFSE T2W, and PROPELLER FSE T2W sequences, were 95.7 %, 66.3 %, 94.4 %, 92.8 %, and 93.8 %, in sequence order. The high b value DWI sequence was able to detect malignant lesions with a higher accuracy rate than the T2W sequences. There was a moderate to high rate of agreement among the interpreters, and the lesion-detection rates of the interpreters were in line with their levels of expertise. CONCLUSION: Even though the higher lesion detection rates of the DWI sequences were not found to be statistically significant, it was concluded that making the evaluations with the addition of DWI to the imaging protocol would certainly decrease the lesion-missing rate, and it would be wise to utilize the DWI technique in routine liver MR imaging.
Asunto(s)
Imagen de Difusión por Resonancia Magnética , Neoplasias Hepáticas/diagnóstico , Hígado/diagnóstico por imagen , Imagen por Resonancia Magnética/métodos , Método Doble Ciego , Humanos , Hígado/patologíaRESUMEN
OBJECTIVE: Indirect bilirubin exerts an antioxidant effect when increased mildly. This study aimed to investigate whether increased bilirubin levels lead to an oxidant effect in newborns with hyperbilirubinemia requiring phototherapy. PATIENTS AND METHODS: The study included 30 term newborn infants aged 0-7 days with indirect hyperbilirubinemia requiring phototherapy and no comorbid disease as the study group. In addition, 30 term healthy newborn infants aged 0-7 days without indirect hyperbilirubinemia were employed as a control group. Serum triglyceride, total cholesterol, high-density lipoprotein (HDL), low-density lipoprotein (LDL), serum paraoxonase (PON) levels and malondialdehyde (MDA) levels were compared between the groups. RESULTS: Serum MDA, total bilirubin, and LDL and HDL levels were significantly higher and the serum PON level was significantly lower, in the study group compared with the controls (p < 0.05). CONCLUSION: In newborns with hyperbilirubinemia requiring phototherapy, an increased bilirubin level causes oxidative stress by decreasing the level of serum PON and increasing the level of MDA.
Asunto(s)
Arildialquilfosfatasa/sangre , Hiperbilirrubinemia Neonatal/sangre , Malondialdehído/sangre , Estrés Oxidativo , Biomarcadores/sangre , Estudios de Casos y Controles , Femenino , Humanos , Recién Nacido , MasculinoRESUMEN
A 16-day-old boy was admitted to our clinic with localized blisters on the neck, cheeks, earlobes, and oral cavity and with erythema on the toes, in addition to poor weight gain and respiratory distress. A physical examination revealed several erythematous plaques with tense bullae, multiple vesicles, and erosions on the left toes, neck, earlobes, and face as well as erosive lesions on the anterior part of the oral cavity, lips, and buccal mucosae. A bronchoscopic examination revealed bullous lesions in the upper respiratory tract and on the epiglottis. A skin biopsy suggested a diagnosis of bullous pemphigoid (BP). Because of the severe mucosal involvement, further investigations including various immunological techniques were performed. The case was diagnosed as BP associated with linear IgA bullous disease (LAD). Complete remission without any scarring was achieved after three weeks of oral methyl prednisolone treatment. A correct differential diagnosis of bullous diseases is important for determining the prognosis and expected response to treatment. To our knowledge, this is the first case of BP associated with LAD reported in literature.