Inflammatory bowel disease(IBD),the precise etiology of which remains unknown,is comprised of two forms of chronic intestinal inflammation,ulcerative colitis and Crohn's disease.Recent researches suggest that angiopoiesis plays an important role in the development of IBD.Many cytokines can enhance angiopoiesis,such as fibroblast growth factor-2,interleukin-8,platelet-derived growth factor,transforming growth factor-? and particularly vascular endothelial growth factor.This review summarizes the angiopoietic factors correlated with IBD.

Antigens, Neoplasm ; metabolism ; Biomarkers, Tumor ; metabolism ; Calbindin 2 ; Cell Adhesion Molecules ; metabolism ; Claudins ; metabolism ; Diagnosis, Differential ; Epithelial Cell Adhesion Molecule ; Humans ; Matrix Metalloproteinases ; metabolism ; Mucin-1 ; metabolism ; Pleural Effusion, Malignant ; diagnosis ; metabolism ; Receptor, trkA ; metabolism ; S100 Calcium Binding Protein G ; metabolism

OBJECTIVETo study the clinicopathological characteristics of papillary cystadenoma of the epididymis.

METHODSUsing routine pathology and immunohistochemistry, we observed the surgically obtained samples from 2 cases of papillary cystadenoma of the epididymis, analyzed their pathological features and clinical presentations, and reviewed the related literature.

RESULTSThe 2 patients were both adult males. The tumors typically manifested as painless swelling in the epididymis, with occasionally dull pain and tenesmus in 1 of the cases. Pathologically, the lesions exhibited three morphological features, i. e., dilated ducts and small cysts surrounded by fibrous connective tissue, adenoid papillary hyperplasia into the cysts embraced by fibrovascular stroma, and acidophil substance present in the cysts. Immunohistochemistry showed that the tumors were strongly positive for CK8/18, CK7, and EMA, but negative for CK20, CEA, MC, Calretenin, P53, P63, SMA, VHL, and CD10, with the positive rate of Ki-67 <1%. Follow-up visits revealed good prognosis in both cases.

CONCLUSIONPapillary cystadenoma of the epididymis is a rare benign tumor in the male urogenital system, which may be accompanied by the VHL syndrome. Surgery is the first choice for its treatment.

Adult ; Cystadenoma, Papillary ; chemistry ; pathology ; Epididymis ; Genital Neoplasms, Male ; chemistry ; pathology ; Humans ; Immunohistochemistry ; Male ; von Hippel-Lindau Disease

Endodermal Sinus Tumor ; pathology ; Female ; Humans ; Infant ; Vaginal Neoplasms ; pathology

Purpose To investigate the clinicopathological and immunohistochemical features of primary renal lymphomas ( PRL) , and to discuss the diagnosis, differential diagnosis, treatment and prognosis of the tumors. Methods Clinical data of 19 patients with PRL from January 2005 to October 2014 were retrospectively analyzed. Result The 19 patients in this study, there were 11 males and 8 females and the age ranged from 37 to 85 years old (averaged 55). Patients were mainly presented with unilateral renal masses, with lumbodynia as the main symptom. 13 patients underwent nephrectomy, 6 patients underwent renal biopsy and 17 patients received CHOP or R-CHOP chemotherapy. All of them were diagnosed as non-Hodgkin’ s lymphoma, with 14 cases of diffuse large B cell lym-phoma (DLBCL) (73. 684%, 14/19), 4 cases of B cell small cell lymphoma (21. 053%, 4/19), and 1 cases of T cell lymphoma (5. 263%, 1/19). Follow-up information was available in 15 patients. 12 were still alive and survived for 1~78 months, while the other 3 were dead with 1 case who died of cerebral infarction, and survived for 3~38 months ( averaged 23 months) . Conclusion PRL is an extranodal lymphoma which is rare in kidney and is often misdiagnosed as renal carcinomas due to its nonspecific clinical manifestations. The diagnosis of PRL can be confirmed by histopathological examination, immunohistochemistry and molecular analy-sis. The majority of the lymphomas are B cell lymphomas and most of them are DLBCL. The recommended treatment is surgery com-bined with chemotherapy and the prognosis is associated with the age, clinicopathological characteristics, tumor types and treatment.

Objective Cervical lymph node enlargement may be attributed to inflammation or tumors .This study was to analyze the pitfalls in fine-needle aspiration cytology ( FNAC) of cervical lymph nodes and the measures for avoiding misdiagnosis of cervical lymph node lesions . Methods We retrospectively analyzed the data about 435 cases of FNAC in comparison with the results of corre-sponding tissue biopsies in cervical lymph nodes . Results Among the 435 cases, 7 showed disagreement between the results of cytolog-ic and histologic diagnoses, which included 5 males and 2 females, at the age of 41 to 71 (58.4 ±8.9) years.Six of the cases presented with local lymph node enlargement and 1 with generalized lymphadenopathy, all with enlarged lymph nodes palpable 1-4 cm in diameter . Based on the results of FNAC, 1 case of malignant lymphoma was misdiagnosed as lowly differentiated adenocarcinoma, 1 case of lympho-ma misdiagnosed as poorly differentiated metastatic carcinoma, 2 cases of lymphoma diagnosed as lymphoproliferation and recommended for biopsy, 1 case suggestive of malignant tumor without further classification, and 2 cases microscopically characterized and recommended for lymph node biopsy.Compared with the results of the biopsy, FNAC achieved a 99.3%coincidence rate of qualitative diagnosis (432/425), with a misdiagnosis rate of 1.6%(7/435). Conclusion FNAC plays a very important role in the initial identification of the nature of lymph node lesions and the type of tumors.Practiced puncture skills and intimate knowledge about the histopathological features, diagnostic criteria, and differential diagnosis of the lymphatic system disorders are essential for improving the diagnostic accuracy of FNAC .

Purpose To investigate the clinical manifestations, imaging characteristics and pathological features of mesenteric lym-phangioma. Methods The clinical pathological and imaging features of 14 cases diagnosed mesenteric lymphangioma were retrospec-tively analyzed. Results 14 cases of mesenteric lymphangioma appeared diversity of clinical symptoms, most presenting abdominal pain and discomfort. Cystic lesion had often been diagnosed and only 2 cases were recognized as lymphangioma by imaging examina-tion. These tumors usually located in the mesentery and some involved intestinal wall. Microscopically, the tumors were consisted of ir-regular cavities, lined with simple flat endothelial cells, filled with lymph fluid and lymphocytes. All cases showed strong D2-40 immu-noreactivity. Conclusion Mesenteric lymphangioma is a benign tumor with serious complications, and preoperative CT imaging stud-ies may prompt the diagnosis. Resection completely is the preferred treatment.

Objective: The Thinprep liquid-based cytology test(TCT) is a new technique applied to cytopathologic diagnosis in recent years.The purpose of this study was to analyze the diagnostic coincidence between lung puncture liquid-based cytology and histopathology.Methods: A total of 408 tissue specimens obtained by CT-guided percutaneous translung biopsy were observed under the optical microscope after fixation,embedding,sectioning and staining,and the cells in the washing fluid for puncture needles were detected by TCT.Then the diagnostic coincidence was analyzed between cytological and pathological biopsies.Results: Of the 408 cases detected by liquid-based cytology,148(36.3%) were diagnosed as cancer,32(7.8%) as suspected cancer,38(9.3%) as heterocyst and 190(44.9%) were negative,as compared with 183(44.9%),21(5.1%),22(5.2%) and 182(44.6%) by histopathology.The results showed a correlation between the two methods(P

OBJECTIVETo explore the ultrastructural changes of hepatocyte fibrogenesis in cholelithiasis in biliary tract.

METHODSl0 liver biopsies were taken from the patients suffered from gallstone and choledocholithiasis during surgical treatment and the ultrastructural changes were observed under electromicroscope.

RESULTSThere were plentiful collagenous microfibrils (CMFs) grown within some hepatocytes. These CMFs distributed locally or diffusely in cytoplasm even extended into nucleus. In 7 cases numerous megamitochondrias appeared in several hepatocytes, the inclusions mimicking fibrils could be frequently seen and grew beyond the envelope. Furthermore, typical CMFs could be seen in the large microbodies, and several vesicular or cystic structures similar as fibroblast were presented in marginal areas of the hepatocytes.

CONCLUSIONSWe deduce that the fibrosed hepatocytes may be remained and take part in the hyperplasia of hepatic fibrous tissue.

Adult ; Cholelithiasis ; pathology ; ultrastructure ; Female ; Hepatocytes ; pathology ; ultrastructure ; Humans ; Liver Cirrhosis ; pathology ; Male ; Middle Aged

Mg2Ni0.8Cr0.2-x wt.% CoO/Al2O3 (x=0.5, 1, 2 and 3) composites were prepared by mechanically milling sintered Mg2Ni0.8Cr0.2 alloy and CoO/Al2O3 compound for 45 h. The addition of CoO/Al2O3 compound resulted in the good kinetics properties of hydriding/dehydriding reaction of the composites. The composite with 1.0 wt.% CoO/Al2O3 catalyst could reach the maximum hydrogen absorption capacity (2.9 wt.%) within 5 min at 393 K under H2 pressure of 4 MPa, and can desorb rapidly at 493 K. The decomposition and synthesis of hydrogen molecule on Mg2Ni0.8Cr0.2 alloy surface was promoted by addition of CoO/Al2O3 catalyst. In addition, the formation of metallic Ni particles, strain and defects during the ball milling process also resulted in the improved hydrogenation performance of Mg2Ni-based alloys.
Absorption ; Aluminum Oxide ; analysis ; chemistry ; Hot Temperature ; Hydrogen ; analysis ; chemistry ; Kinetics ; Magnesium Compounds ; analysis ; chemistry ; Manufactured Materials ; analysis ; Materials Testing ; Molecular Conformation ; Nitrogen Compounds ; analysis ; chemistry ; Pressure ; Temperature