Objective:To investigate the clinicopathological features, immunophenotype, molecular characteristics, and differential diagnosis of primary intracranial DICER1-mutant sarcoma in order to better understand this tumor type.Methods:A retrospective analysis was conducted on 7 cases of primary intracranial DICER1-mutant sarcoma diagnosed in the Department of Pathology, Sun Yat-sen University Cancer Center, Guangzhou, China between 2021 and 2023 using next-generation sequencing. At the same time, 10 gliosarcomas, 4 intracranial FET::CREB fusion-positive mesenchymal tumors, 4 malignant meningiomas, 3 malignant solitary fibrous tumors, 3 malignant peripheral nerve sheath tumors, 3 synovial sarcomas and 3 rhabdomyosarcomas (total 30 cases) were selected as control.Results:Among the 7 patients with primary intracranial DICER1-mutant sarcoma, 6 were male and 1 was female, aged 10-32 years (median, 23 years). The tissue morphology was predominantly spindle or pleomorphic sarcoma-like, with 6 cases exhibiting eosinophilic globules, and 3 cases showing rhabdomyoblastic or rhabdomyosarcoma-like cell differentiation. Immunohistochemistry revealed focal desmin expression in 3 cases (3/7), ATRX loss in 3 cases (3/7), and p53 mutant pattern in 4 cases (4/7). Additionally, 4 cases (4/7) showed focal or diffuse SALL4 expression, whereas the control cases (30 cases) did not exhibit SALL4 protein expression, suggesting that SALL4 may possess certain auxiliary diagnostic value. Next-generation sequencing confirmed that all 7 cases of primary intracranial DICER1-mutant sarcoma harbored mutations in the DICER1 gene, with 5 cases having the mutation site at p.E1813D. Until May 2024, all 7 patients were alive.Conclusions:Primary intracranial DICER1-mutant sarcoma is a rare tumor. Understanding its morphological characteristics, immunohistochemical and molecular markers and differential diagnosis is crucial to avoid misdiagnosis and to improve diagnostic accuracy of this tumor.

In recent years, the incidence of thyroid carcinoma gradually increased in China. The pathology diagnosis and classification was based on WHO classification of Tumors of Endocrine Organs, the third edition which published in 2004. The fourth edition, WHO classification of Tumors of Endocrine Organs was published in July 2017. Compared with the third, some important aspects (or points) were revised: the ICD-O code of hyalinizing trabecular tumor was changed from 0 to 1; three other encapsulated follicular-patterned thyroid tumors were added; the variants of well differentiation thyroid carcinoma (including papillary carcinoma and follicular carcinoma ) which was originated from thyroid epithelial cells were updated; oncocytic cell tumors were separated from follicular tumors; the ICD-O code of ectopic thymoma was changed from 1 to 3. Refinement and standardization part of the concepts and diagnostic criterias were done which can solve practical problems in pathology diagnosis.

The quality of SCI papers is one of the objective indexes of evaluation on scientific and technological strength and research capabilities.This paper introduced a comprehensive management strategy to promote the publication of SCI papers with high impact factors,in terms of such dimensions ass research orientation,financial and technical support,personnel training,and scientific research management platform.The short and long term effects of the comprehensive management strategy system were analyzed using the SCI papers publication data and IF data from 201 1 to 2014 at the hospital,as a reference for building a scientific management system of SCI papers for the administrators.

Objective To study the left atrial appendage (LAA) function and haemodynamics by transesophageal echocardiography,and predict high risk of thrombosis.Methods Eighty-nine consecutive patients were studied using transesophageal echocardiography.According to with spontaneous echo contrast (SEC) or not,all patients were divided into SEC group (n =17) and non-SEC group (n-=72).LAA emptying peak flow velocity (LAA-EV),filling peak flow velocity (LAA-FV) were measured by pulsed Doppler.The middle segment of the LAA medial wall systolic peak velocity (LAA-TSV) and diastolic peak velocity (LAA-TDV) were obtained by tissue Doppler imaging.LAA color Doppler and M-mode color Doppler images were acquired and derived the LAA emptying flow propagation velocity (LAA-EPV).Results LAA-EV,LAA-FV,LAA-TSV,LAA-TDV,LAA-EPV of SEC group were lower than those of non-SEC group (P ＜0.05).LAA M-mode color Doppler had four characteristic patterns,N pattern (normal pattern) which flow eject from LAA apical to LAA orifice,R pattern (reverse pattern) which flow eject from LAA orifice to LAA apical,V pattern (vertical pattern) vertical signals seen in systole and without efficient flow,S pattern (stasis pattern) almost no flow signal.V,R and S patterns may indicate high risk of SEC and thrombosis.LAA-EPV had strong correlation with LAA-EV (r =0.742,P ＜0.001),and moderate correlation with LAA-TSV (r =0.462,P ＜0.01),LAA-EV had strong correlation with LAA-TSV (r =0.600,P ＜0.01).Conclusions LAA dysfunction would result in hypokinetic LAA wall motion and reduced blood flow velocity.Emptying abnormalities of LAA might be the important reasons for blood stasis and thrombus formation.Emptying characteristic low patterns of V,R and S might be novel methods to predict high risk of thrombus.

Objective To evaluate the effect of community systemic management on quality of life in patients with hypertension.Methods A cross-sectional study was used to survey 224 patients with essential hypertension systemically managed in community and 205 non-management patients using the questionnaire including demographic information,behaviour,years of hypertension,treatment,Chinese version SF-36 short form of quality of life and the symptom distress checklist.Student-t test,?2-test,and covariance analysis was used in data analysis.Result The managed patients' mean score of knowledge(6.40?1.31)was significantly higher than that in non-managed patients'(5.02?1.82,t=8.82,P

Objective To explore main influencing factors of quality of life in patients with essential hypertension.Methods 644 patients with essential hypertension were investigated in a cross-sectional study with the questionnaire including demographic information,behaviour,years of hypertension,treatment,Chinese version SF-36 short form of quality of life.Influencing factors was analyzed by variance analysis and stepwise multivariate linear regression.Results Multivariable analysis showed that age,history of mental distress within the last one year,family income,physical exercise,attitude,knowledge,ordinary blood pressure,and community comprehensive management significantly influenced quality of life of patients with hypertension,with their standardized coefficients being-0.204,-0.097,0.102,-0.174,-0.197,0.129,-0.178 and-0.227 respectively.Conclusions To improve hypertension patients' quality of life,it is should be strengthened to control their blood pressure effectively,to enhance their health education and feasible exercise,and to improve their pessimistic attitude with psychological intervention.

Objective To investigate the clinicopathologic features of GIST. Method Fifty-five GIST cases were collected. Immunohistochemical assays of vimentin, CD117, CD34, S-100, SMA, desmin, NF were used to study the specimen. Results 69% (38/55) of the tumors located in the stomach, 18% (10/55) in the small intestine. Tumors varied greatly in size, ranging from 0.4 to 40 cm (average 6.7 cm). Morphologic criteria of malignancy are tumor size≥5 cm, mitotic rates≥5/50 HPF and ulcer formation and there were significant differences between the benign and the malignant. Immunohistochemical staining results: CD117 positive in 39 cases(71%), CD34 in 45 cases (82%), S-100 in 19 cases (35%), SMA in 12 cases (22%), vimentin in 32 cases (58%), desmin in 6 cases(11%),and NF in 2/4 (50%). All 13 benign cases were alive on the latest follow-up. In 42 cases of malignancy and potential malignancy, 4 developed metastasis, 13 died. Conclusion (1) GIST occur predominantly in middle-aged and older persons.(2) The main criteria of malignancy of GIST are tumor size≥5 cm, mitotic rates≥5/50 HPF and ulcer formation. (3)Whereas it is difficult to identify true leiomyomas/leiomyosarcomars and neuogenic tumors from GIST, immunohistochemical staining is capable of doing this.