Mechanical properties of materials for 3D printed orthodontic retainers.

The purpose of this study was to compare the mechanical properties of materials used for orthodontic retainers made by direct 3D printing and thermoforming.

Gene variants of the SLC2A5 gene encoding GLUT5, the major fructose transporter, do not contribute to clinical presentation of acquired fructose malabsorption.

Background: While role of ALDOB-related gene variants for hereditary fructose intolerance is well established, contribution of gene variants for acquired fructose malabsorption (e.g. SLC2A5, GLUT5) is not well understood.

A rare case with synchronous gastric gastrointestinal stromal tumor, pancreatic neuroendocrine tumor, and uterine leiomyoma.

Background: Although gastrointestinal stromal tumors (GISTs) are the most common mesenchymal tumors of the gastrointestinal tract, they comprise less than 1% of all gastrointestinal tumors. Neuroendocrine tumors (NET) of the gastro-enteropancreatic system are also rare, representing about 2% of all gastrointestinal neoplasms. Pancreatic localization of NET is extremely uncommon-these tumors are only 1-5% of all pancreatic cancers.

A rare combination between familial multiple lipomatosis and extragastrointestinal stromal tumor.

Introduction: Gastrointestinal stromal tumors (GISTs) are the most common mesenchymal tumors of the gastrointestinal tract. Rarely, GISTs can be located in mesentery, retroperitoneal space, omentum or pancreas. In these cases, the neoplasm is defined as "extra-gastrointestinal stromal tumors" (EGISTs).

Rosai-Dorfman disease involving gallbladder and liver-Report of a case.

Introduction: Rosai-Dorfman disease (RDD), also known as sinus histiocytosis with massive lymphadenopathy, is a rare histiocytic disorder of unclear etiology. Lymphadenopathy commonly affects the lymph nodes of the neck and the head, but extranodal involvement has been observed too.

Presentation Of Case: We describe an unusual case of RDD with involvement of the gallbladder, liver and cystic lymph node, clinically manifested as an exacerbated cholecystitis.

Mucinous cystic neoplasm of the liver with low grade dysplasia of the liver.

Mucinous cystic neoplasm (MCN) with low grade dysplasia of the liver is rare. It had been previously called hepatobiliary cystadenoma and is seen almost exclusively in women without an associated invasive carcinoma. There are different theories for development of MCN of the liver.

Gastrointestinal stromal tumors.

Gastrointestinal stromal tumors are very rare. The diagnosis is difficult because there are no typical clinical and laboratory signs, as well as specific data of the radiologic and instrumental investigations. Surgical treatment is most important for gastrointestinal stromal tumors, but about nonresecable cases the method of election is the therapy with Imatinib.

[Sepsis--current aspects].

Sepsis is defined as a clinical syndrome of systemic response to infections. With progression of the disease develop organ failure (i.e.

[Improved technique for internal biliary-digestive drainage during conventional palliative procedure of nonresectable tumors of periampullary region].

Aim: We represent variation of bilio-digestive stomy with "lost" protecting drainage during conventional palliative procedure of nonresectable tumors of periampullary region.

Materials And Methods: During the period 01.01.

[Analysis of microbial flora during operation for cholangitis and other inflammatory deseases of the hepato-billiary system].

Background: Inflammatory deseases of the billiary system are common in the hepato-billiary surgery. Most serious is the cholangitis. Treatment is based on individual approach of choice of moment of correct surgical intervention and corresponding adequate antibiotic therapy.

[Internal biliary fistulas--diagnostic and therapeutic problems].

Background: Internal biliary fistula (IBF) is still a challenging condition. The preoperative diagnosis is established in less than 50% of cases. Treatment is based on individual approach but postoperative morbidity and mortality rates are high.

[M-echocardiographic determination of left-ventricular diastolic noncompliance, diastolic wall stress and the rate of relaxation of the circumferential muscle fibers].

New noninvasive contemporary indices for assessment of left ventricular diastolic function are presented. They can be obtained by the simultaneous recording of the M-echocardiographic left ventricular dimensions and the apexcardiogram. These indices are: left ventricular diastolic compliance, left ventricular wall stress and the velocity of the circumferential fibre shortening.