Transformation from polycythemia vera to acute promyelocytic leukemia: Case report and literature review.

Introduction: Transformation from chronic myeloproliferative neoplasm to acute leukemia is a feature of myeloproliferative neoplasm; however, the rate is not high. Transformation to acute promyelocytic leukemia is rare. Here, we report a case of transformation of polycythemia vera to acute promyelocytic leukemia and describe a process of clonal evolution that has not yet been reported.

Distribution Pattern of Atherosclerotic Stenosis in Chinese Patients with Stroke: A Multicenter Registry Study.

The aim of this multicenter study was to demonstrate the distribution pattern of atherosclerotic stenosis and its trend with aging between extracranial and intracranial arteries and its distribution between the anterior and posterior circulations in Chinese patients hospitalized with ischemic stroke. In addition, the risk factors for the distribution pattern were illustrated. From June 2015 to May 2016, 9,346 patients with ischemic stroke from 20 hospitals were enrolled.

Chinese association of ultrasound in medicine and engineering, superficial organs and peripheral vessels committee expert consensus on clinical frequently asked questions in breast ultrasonography, June 2018.

Ultrasonography, the preferred imaging modality for breast diseases, has merits such as absence of radiation, high diagnostic accuracy, and convenience for follow-up, thus playing an important role in clinical diagnosis and management. The American College of Radiology (ACR) proposed Breast Imaging-Reporting and Data System (BI-RADS ) and has updated for several times. Gradually, the BI-RADS has been accepted and adopted by ultrasound physicians at all levels of hospitals in China, and it has played a certain role in improving the diagnostic level of breast ultrasound in China.

Correlation of Conventional Ultrasound Characteristics of Breast Tumors With Axillary Lymph Node Metastasis and Ki-67 Expression in Patients With Breast Cancer.

Objectives: To explore the association between the ultrasound (US) characteristics of breast tumors with axillary lymph node metastasis (ALNM) and Ki-67 expression in patients with breast cancer.

Methods: In total, 527 consecutive patients with breast cancer who had undergone US examinations and curative surgery with axillary lymph node evaluations were included. The size, shape, aspect ratio, margin, internal echo, internal calcification, posterior echo attenuation, lymphatic hilar structure, cortical thickness, and blood flow of the axillary lymph nodes or primary breast lesions were observed with conventional US.

Ultrasonographic evaluation of radial nerve injuries associated with pediatric chronic monteggia lesions.

Introduction: To determine the ultrasonographic evaluation of the radial nerve (RN) before correction of chronic pediatric Monteggia lesions in patients with suspected nerve injury.

Methods: Twelve consecutive children with Monteggia lesions were investigated. The cross-sectional area (CSA) of the nerve and the nerve-to-skin (N-S) distance were determined by ultrasonography at 3 levels: 5 cm proximal to the humeroradial joint (L_prox), a horizontal line through the humeroradial joint (L_mid), and 2.

Risk factors associated with failed sonographically guided saline hydrostatic intussusception reduction in children.

Objectives: The aim of this study was to explore the risk factors associated with failed sonographically guided saline hydrostatic intussusception reduction in children.

Methods: We retrospectively reviewed the medical records and sonograms of 288 cases of intussusception over a 3-year period. Logistic regression was used for the analysis of the clinical data (sex, age, duration of symptoms, and presence or absence of emesis or bloody stool) and sonographic features (initial location and intussusception length, presence or absence of free peritoneal fluid, and trapped fluid in the intussusception).

Precursor B-cell lymphoblastic leukemia of the arm mimicking neurogenic tumor: case report.

Precursor B-cell lymphoblastic lymphoma (PBLL) is an infrequent subtype of lymphoblastic lymphoma (LBL) that commonly affected site for the diagnosis is the skin, followed by the head and neck. In this report, we presented a special case of PBLL located at the left arm and detected with magnetic resonance imaging (MRI) and ultrasonography (US). This kind of PBLL is similar to a peripheral nerve tumor in clinical and radiographic manifestation.