Clinicopathologic study of cardiac myxofibrosarcomas / 中华病理学杂志

Objective@#To investigate the clinicopathologic features of cardiac myxofibrosarcomas.@*Methods@#The clinical data, pathomorphologic and immunohistochemical features were evaluated in five cases of cardiac myxofibrosarcoma collected from January 2009 to December 2014, with relevant literature review.@*Results@#Five patients with cardiac myxofibrosarcoma, including four women and one man [age range 39-61 years; mean (50.4±9.0) years] were included. All tumors were broadbased and located mainly in the left atrium, with one case extending through the atrial wall and pericardium to the left lower lung lobe. The morphological grade was low in one case, intermediate in one, and high in three. Using Fédération Nationale des Centres de Lutte Contre le Cancer (FNLCC) grading system, one case was grade 1 and four cases were grade 2. Immunohistochemical analysis revealed diffuse and strong expression for vimentin in all cases. Smooth muscle actin and muscle specific actin were variably expressed. Complete tumor excision was performed in one case, and tumor debulking was performed in the other four cases. Clinical follow-up was available in three cases. One patient with en bloc excision of the tumor mass survived 13 months and the other two with tumor debulking died one month after surgery.@*Conclusions@#The most common location for cardiac myxofibrosarcoma is the left atrium. Some myxofibrosarcoma may be histologically bland and misdiagnosed as myxoma due to histological similarities. Thus caution should be exercised in their microscopic differentiation. Precise imaging, multidisciplinary approach and adequate initial surgery may contribute to improving the clinical outcomes of myxofibrosarcoma.

Autopsy findings of 19 cases of pulmonary vein abnormalities associated with fetal cardiac anomalies / 中华病理学杂志

<p><b>OBJECTIVE</b>To improve the diagnostic accuracy of fetal pulmonary venous abnormalities through the analysis of the fetal pulmonary vein anatomy.</p><p><b>METHODS</b>234 cases of congenital cardiac abnormalities were detected by echocardiography during pregnancy in An Zhen Hospital, Capital Medical University from May 2010 to August 2015. Autopsy was then performed. The type of fetal pulmonary venous malformation, cardiac abnormalities, systemic venous malformations, and other internal organs deformities were documented.</p><p><b>RESULTS</b>There were ninteen cases of pulmonary venous malformations among the 234 cases of fetal congenital heart disease. These included two cases of congenital pulmonary venous hypoplasia (CPVH) or atresia, four cases of partial anomalous pulmonary venous drainage (PAPVD), seven cases of total anomalous pulmonary venous drainage (TAPVD), five cases of atresia of common pulmonary vein (CPV), one case of congenital pulmonary venous hypoplasia with total anomalous pulmonary venous drainage. There were eleven cases with single ventricle, eight cases with right aortic arch, seven cases with single atrium and six cases with pulmonary valve stenosis. Eleven cases had pulmonary hypoplasia and nine cases had abnormal spleen.</p><p><b>CONCLUSIONS</b>There are many variations in pulmonary venous abnormalities associated with severe and complex cardiac abnormalities and internal organs malformation. Care should be exercised during autopsy examination to look for all branches of the pulmonary vein.</p>

Immunohistochemical evaluation of mutant p53 protein over-expression in non-mucinous adenocarcinoma in-situ and invasive adenocarcinoma, NOS of lung / 中华病理学杂志

<p><b>OBJECTIVE</b>To study the over-expression of mutant p53 protein in non-mucinous adenocarcinoma in-situ (NMAIS) and invasive adenocarcinoma, NOS of lung.</p><p><b>METHODS</b>Immunohistochemical study for p53 protein was performed on 17 cases of NMAIS and 70 cases of invasive adenocarcinoma, NOS of lung. The difference in p53 over-expression between the two tumor subtypes was analyzed.</p><p><b>RESULTS</b>The over-expression of mutant p53 protein was observed in 0 case (0%) of NMAIS and 37 cases (52.9%) of invasive adenocarcinoma, NOS of lung. The difference was of statistical significance (P = 0.000).</p><p><b>CONCLUSION</b>Mutant p53 protein over-expression may play a role in the progression of NMAIS to invasive adenocarcinoma, NOS.</p>