Various mucin-producing neoplasms originate in different abdominal and pelvic organs.Mucinous neoplasms differ from non-mucinous neoplasms because of the differences in clinical outcome and imaging appearance.Mucinous...Various mucin-producing neoplasms originate in different abdominal and pelvic organs.Mucinous neoplasms differ from non-mucinous neoplasms because of the differences in clinical outcome and imaging appearance.Mucinous carcinoma,in which at least 50%of the tumor is composed of large pools of extracellular mucin and columns of malignant cells,is associated with a worse prognosis.Signet ring cell carcinoma is characterized by large intracytoplasmic mucin vacuoles that expand in the malignant cells with the nucleus displaced to the periphery.Its prognosis is also generally poor.In contrast,intraductal papillary mucinous neoplasm of the bile duct and pancreas,which is characterized by proliferation of ductal epithelium and variable mucin production,has a better prognosis than other malignancies in the pancreaticobiliary tree.Imaging modalities play a critical role in differentiating mucinous from non-mucinous neoplasms.Due to high water content,mucin has a similar appearance to water on ultrasound(US) ,computed tomography(CT) ,and magnetic resonance imaging,except when thick and proteinaceous,and then it tends to be hypoechoic with fine internal echoes or have complex echogenicity on US,hyperdense on CT,and hyperintense on T1and hypointense on T2-weighted images,compared to water.Therefore,knowledge of characteristic mucin imaging features is helpful to diagnose various mucinproducing neoplastic conditions and to facilitate appropriate treatment.展开更多
<b><span>Background:</span></b><span> Blunt thoracic and abdominal traumas are frequent and have a poor prognosis in the absence of prompt diagnosis and adequate management. An ultra...<b><span>Background:</span></b><span> Blunt thoracic and abdominal traumas are frequent and have a poor prognosis in the absence of prompt diagnosis and adequate management. An ultrasound performed in the emergency room allows a precise diagnosis and a better orientation of the victims.</span><span> </span><b><span>Objective:</span></b><span> To assess the contribution of EFAST ultrasound in the management of blunt thoracic and abdominal traumas.</span><span> </span><b><span>Patients and method:</span></b><span> Cross-sectional descriptive and analytical study with prospective data collection carried out from February 20</span><sup><span style="vertical-align:super;">th</span></sup><span> to August 20</span><sup><span style="vertical-align:super;">th</span></sup><span>, 2017 in the emergency and intensive care units of the Parakou University Hospital Centre. An ultrasound machine fitted with a 3.5 MHz convex probe was used to search for post-traumatic effusion by the EFAST technique on admission and then as needed over 24 hours and after surgery.</span><span> </span><b><span>Results:</span></b><span> Sixty-three patients were collected with an 85.71% male predominance. The average age was 31.36 ± 13.29 years. The time to perform the EFAST ultrasound was 7 ± 3 min. EFAST was positive in 50.79% of patients. Five patients (7.93%) received emergency treatment for hemodynamic instability and positive EFAST within an average of 3.46 ± 2 hours. Eighteen patients (27.58%) received after monitoring by EFAST, surgery within 9 hours 12 minutes (hemoperitoneum) and 27 hours 58 minutes (hemothorax). Two patients were tested positive</span><span>ly</span><span> for EFAST after surgery.</span><span> </span><b><span>Conclusion:</span></b><span> The introduction of an EFAST ultrasound as a sorting tool in an environment with limited resources is desirable and feasible.</span>展开更多
基金Supported by A grant from the Korea Healthcare Technology R and D Project,Ministry for Health,Welfare,and Family Affairs,South Korea,A091047
文摘Various mucin-producing neoplasms originate in different abdominal and pelvic organs.Mucinous neoplasms differ from non-mucinous neoplasms because of the differences in clinical outcome and imaging appearance.Mucinous carcinoma,in which at least 50%of the tumor is composed of large pools of extracellular mucin and columns of malignant cells,is associated with a worse prognosis.Signet ring cell carcinoma is characterized by large intracytoplasmic mucin vacuoles that expand in the malignant cells with the nucleus displaced to the periphery.Its prognosis is also generally poor.In contrast,intraductal papillary mucinous neoplasm of the bile duct and pancreas,which is characterized by proliferation of ductal epithelium and variable mucin production,has a better prognosis than other malignancies in the pancreaticobiliary tree.Imaging modalities play a critical role in differentiating mucinous from non-mucinous neoplasms.Due to high water content,mucin has a similar appearance to water on ultrasound(US) ,computed tomography(CT) ,and magnetic resonance imaging,except when thick and proteinaceous,and then it tends to be hypoechoic with fine internal echoes or have complex echogenicity on US,hyperdense on CT,and hyperintense on T1and hypointense on T2-weighted images,compared to water.Therefore,knowledge of characteristic mucin imaging features is helpful to diagnose various mucinproducing neoplastic conditions and to facilitate appropriate treatment.
文摘<b><span>Background:</span></b><span> Blunt thoracic and abdominal traumas are frequent and have a poor prognosis in the absence of prompt diagnosis and adequate management. An ultrasound performed in the emergency room allows a precise diagnosis and a better orientation of the victims.</span><span> </span><b><span>Objective:</span></b><span> To assess the contribution of EFAST ultrasound in the management of blunt thoracic and abdominal traumas.</span><span> </span><b><span>Patients and method:</span></b><span> Cross-sectional descriptive and analytical study with prospective data collection carried out from February 20</span><sup><span style="vertical-align:super;">th</span></sup><span> to August 20</span><sup><span style="vertical-align:super;">th</span></sup><span>, 2017 in the emergency and intensive care units of the Parakou University Hospital Centre. An ultrasound machine fitted with a 3.5 MHz convex probe was used to search for post-traumatic effusion by the EFAST technique on admission and then as needed over 24 hours and after surgery.</span><span> </span><b><span>Results:</span></b><span> Sixty-three patients were collected with an 85.71% male predominance. The average age was 31.36 ± 13.29 years. The time to perform the EFAST ultrasound was 7 ± 3 min. EFAST was positive in 50.79% of patients. Five patients (7.93%) received emergency treatment for hemodynamic instability and positive EFAST within an average of 3.46 ± 2 hours. Eighteen patients (27.58%) received after monitoring by EFAST, surgery within 9 hours 12 minutes (hemoperitoneum) and 27 hours 58 minutes (hemothorax). Two patients were tested positive</span><span>ly</span><span> for EFAST after surgery.</span><span> </span><b><span>Conclusion:</span></b><span> The introduction of an EFAST ultrasound as a sorting tool in an environment with limited resources is desirable and feasible.</span>
