BACKGROUND: The risk of placenta previa and accreta is increased in females wi th previous cesarean deliveries, and there has been an increasing number of thes e operations. CASES: We present 2 cases with previous ces...BACKGROUND: The risk of placenta previa and accreta is increased in females wi th previous cesarean deliveries, and there has been an increasing number of thes e operations. CASES: We present 2 cases with previous cesarean and placenta prev ia in the following pregnancy. One patient had placenta accreta and the other, p lacenta percreta. In both cases, prenatal diagnosis was based on ultrasonography , where features such as loss of the hypoechoic retroplacental zone and irregula r uterine serosa were found in grayscale ultrasonography. In color Doppler imagi ng, in both cases, increased vascularity between myometrium and placenta, as wel l as intraplacental lacunae, were seen. Thinning of the uterine wall, found in m agnetic resonance imaging, contributed to the diagnosis of placenta percreta. CO NCLUSION: Prenatal diagnosis of placenta accreta is of importance because it red uces fetal and maternal morbidity as appropriate preoperative and perioperative procedures are possible.展开更多
Patients with atopic dermatitis (AD) often have increased skin sensitivity and this symptom often worsens during stress. We sought to find out whether patients with AD had stinging,andto identify the pathocausal neuro...Patients with atopic dermatitis (AD) often have increased skin sensitivity and this symptom often worsens during stress. We sought to find out whether patients with AD had stinging,andto identify the pathocausal neuroimmune mechanisms, including the role of stress. In all, 25 patients with AD with histories of stress worsening were tested using a stinger test. Skin biopsy specimens were processed for immunohistochemistry. Stress inquiries and salivary cortisol tests were performed. In all, 16 patients were stinger-positive and 9 were negative. The stingerpositive papillary dermis had an increased number of mast cells, vasoactive intestinal polypeptide-positive fibers,and a tendency to a higher number of substance P- positive nerve fibers, but a decrease of calcitonin gene- related peptide fibers. Patients who were stinger- positive had a tendency to lower salivary cortisol. The majority of patients with AD experience stinging. Substance P, calcitonin gene-related peptide, vasoactive intestinal polypeptide, and mast cells may have a pathocausal role, as might chronic stress.展开更多
文摘BACKGROUND: The risk of placenta previa and accreta is increased in females wi th previous cesarean deliveries, and there has been an increasing number of thes e operations. CASES: We present 2 cases with previous cesarean and placenta prev ia in the following pregnancy. One patient had placenta accreta and the other, p lacenta percreta. In both cases, prenatal diagnosis was based on ultrasonography , where features such as loss of the hypoechoic retroplacental zone and irregula r uterine serosa were found in grayscale ultrasonography. In color Doppler imagi ng, in both cases, increased vascularity between myometrium and placenta, as wel l as intraplacental lacunae, were seen. Thinning of the uterine wall, found in m agnetic resonance imaging, contributed to the diagnosis of placenta percreta. CO NCLUSION: Prenatal diagnosis of placenta accreta is of importance because it red uces fetal and maternal morbidity as appropriate preoperative and perioperative procedures are possible.
文摘Patients with atopic dermatitis (AD) often have increased skin sensitivity and this symptom often worsens during stress. We sought to find out whether patients with AD had stinging,andto identify the pathocausal neuroimmune mechanisms, including the role of stress. In all, 25 patients with AD with histories of stress worsening were tested using a stinger test. Skin biopsy specimens were processed for immunohistochemistry. Stress inquiries and salivary cortisol tests were performed. In all, 16 patients were stinger-positive and 9 were negative. The stingerpositive papillary dermis had an increased number of mast cells, vasoactive intestinal polypeptide-positive fibers,and a tendency to a higher number of substance P- positive nerve fibers, but a decrease of calcitonin gene- related peptide fibers. Patients who were stinger- positive had a tendency to lower salivary cortisol. The majority of patients with AD experience stinging. Substance P, calcitonin gene-related peptide, vasoactive intestinal polypeptide, and mast cells may have a pathocausal role, as might chronic stress.
