报道1例肺胎盘样变形的临床资料，并进行文献复习。

Ischemic stroke has a high incidence rate and recurrence rate, which is one of the main causes of disability and death of Chinese residents. In recent years, the magnetic sensitive vascular sign discovered on magnetic sensitive weighted imaging has received increasing clinical attention, and its formation mechanism and relationship with stroke have become current research hotspots. This article reviews the clinical application of magnetic sensitive vascular sign, aiming to provide more references for the diagnosis and treatment of ischemic stroke.

Nephrotic syndrome is the most common renal disease in childhood. It is characterized by a large amount of Proteinuria, Hypoalbuminemia, edema and hyperlipidemia. Children with nephrotic syndrome complicated with Acute kidney injury are also increasingly common. Once combined with Acute kidney injury, it will not only increase the risk of death, but also delay the time of complete remission of nephrotic syndrome, resulting in long-term adverse consequences, leading to nephrotic syndrome progressing to chronic renal disease, Therefore, early detection and prevention of Acute kidney injury is crucial to the prognosis of patients with nephrotic syndrome. This article reviews the epidemiology, risk factors, pathogenesis and prognosis of nephrotic syndrome in children with Acute kidney injury.

Nowadays, liquid biopsy has become a non-invasive and convenient method for cancer diagnosis. Therefore, finding biomarkers with high specificity and sensitivity for gastric cancer diagnosis is of great significance for the survival and prognosis of gastric cancer patients. As cystic vesicles widely distributed in body fluids, the expression of exosomes in body fluids of tumor patients is significantly different from that of normal subjects. Therefore, tumor exosomes can be used as liquid biopsies to help diagnose malignant tumors. The article provides a review of the progress of research on exosomal RNA as a diagnostic biomarker for gastric cancer.

Acute kidney injury(AKI) is one of the clinical diseases with the highest incidence rate in the world, characterized by rapid deterioration of renal function and further accumulation of metabolic wastes and toxins. Now more and more evidences show that necrotic apoptosis and ferroptosis are one of the main pathological mechanisms of AKI. This article reviews the definition, main biochemical mechanism, main regulatory factors and related research progress of necrotic apoptosis and Ferroptosis in AKI.