Treatment of large avulsion injury in perianal, sacral, and perineal regions by island flaps or skin graft combined with vacuum assisted closure.

Background: Traumatic avulsion injuries to the anus, although uncommon, can result in serious complications and even death. Management of anal avulsion injuries remains controversial and challenging. This study aimed to investigate the clinical effects of treating large skin and subcutaneous tissue avulsion injuries in the perianal, sacral, and perineal regions with island flaps or skin graft combined with vacuum assisted closure.

Diagnostic value of contrast-enhanced ultrasound in thyroid nodules with calcification.

The aim of this study was to investigate the diagnostic values of conventional ultrasound and contrast-enhanced ultrasound (CEUS) in benign and malignant thyroid nodules with calcification. Conventional ultrasound and CEUS were performed in 122 patients with thyroid nodules with calcification. The thyroid nodules were characterized as benign or malignant by pathological diagnosis.

Assessment of immune cells and function of the residual spleen after subtotal splenectomy due to splenomegaly in cirrhotic patients.

Background: The spleen is thought to be central in regulating the immune system, a metabolic asset involved in endocrine function. Overwhelming postsplenectomy infection leads to a mortality rate of up to 50%. However, there is still controversy on performing subtotal splenectomy as treatment of splenomegaly due to portal hypertension in cirrhotic patients.

Correlation of contrast-enhanced ultrasonographic features with microvessel density in papillary thyroid carcinomas.

Background: The purpose of this study was to investigate the correlation of contrast-enhanced ultrasonographic (CEUS) features with microvessel density (MVD) in papillary thyroid carcinomas (PTCs).

Materials And Methods: Contrast-enhanced ultrasonography (CEUS) was performed in 62 patients (17 men and 45 women) with PTC. Tomtec software was applied to analyze the time intensity curve of CEUS.

[Differential diagnostic value of contrast-enhanced ultrasound in calcified thyroid nodules].

Objective: To evaluate the diagnostic value of contrast-enhanced ultrasound(CEUS) in calcified thyroid nodules.

Methods: A total of 179 cases with calcified thyroid nodules between February 2009 and September 2012 underwent CEUS by injection of microbubbles via superficial vein was included in the study. Pathological diagnosis as a gold standard, the sensitivity, specificity, positive predictive, negative predictive and diagnostic coincidence rate of CEUS were evaluated.

[Logistic regression analysis of contrast-enhanced ultrasound and ultrasonic elastography in differential diagnosis of thyroid nodules].

Objective: To evaluate the contrast-enhanced ultrasound(CEUS) and ultrasonic elastography (UE) in diagnosis of thyroid nodules by a binary Logistic regression model.

Methods: A total 149 cases with thyroid nodules were examed by CEUS and UE and were confirmed by surgical pathology. A Logistic model was obtained on the basis of ultrasonographic features.

Assessment of the infiltration of inflammatory cells in the walls of thrombotic varicose veins.

The purpose of this study is to describe the infiltration of mast cells as well as T and B cells in the walls of thrombotic varicose great saphenous veins. Sections were obtained from venous segments of patients with varicose veins and stained with toluidine blue for mast cells, while immunohistochemistry for T cells (using CD45RO antibody) and B cells (CD20) was analyzed using light microscopy after staining. The number of mast cells, T, and B cells observed in thrombotic varicose veins was 1.

Thin steel plate with thumbtack fixation in the treatment of massive presacral venous plexus hemorrhage.

Background: Massive presacral venous plexus hemorrhage during radical resection of rectal carcinoma is rare, but when it occurs, bleeding can be uncontrollable, leading to death in some cases. Medical adhesive gauze sticking and packing and thumbtack compressive fixation are often used for hemostasis, but these methods are not effective in cases of uncontrollable massive hemorrhage. Therefore, identifying a practical, accurate, and reliable method of hemostasis in these cases is essential.

[Effect of NO3(-)-N on CH4 emission during denitrification in subtropical soils].

Methane production and emission were investigated in 45 subtropical soil samples, collected from different land use and derived from different soil parent materials in Jiangxi province, by incubating flooded soil slurries in a closed system under N2 gas in the headspace after treatment with or without NO3(-)-N (200 mg x kg(-1)) for 28 days at 30 degrees C. The results indicated that the content and availability of soil organic C were the dominant factors influencing CH4 production and emission whether NO3(-)-N was added or not under this anaerobic incubation condition. Methane emission was higher in the soils derived from granite in the unamended soils and used for rice cultivation in the amended soils.