Objective To evaluate the clinicopathological characteristics and immunophenotype of solitary fibrous tumor (SFT),which is able to provide the basis for clinical diagnosis and prognosis,differential diagnosis and predictable prognosis.Methods Data from 11 cases of SFT were investigated by immunohistochemical.Results Histologically,SFT was composed of spindle cells,which arranged in fascicles pattern,as well as the collagen and branch vessels.Malignant SFT had higher and crowed cellularity with significant pleomorphism,numerous mitoses and putrescence.Positivity for bcl-2 and CD34 was observed in all SFT.Eight tissues showed CD99 positivity,one showed s-100 positivity,all 1 1 tissues showed Ckpan negativity.Conclusions SFT has originated from different sites,which should be distinguished with fibrosarcoma and other spindle cell neoplasms.More attentions should be paid to malignant SFT and focus on the follow-up visit.

OBJECTIVE To explore the impact and mechanism of curcumin on endometriosis （EMS） model rats based on Notch1 signaling pathway. METHODS Female SD rats with synchronized estrous cycles were implanted with autologous endometrium on the abdominal wall to construct EMS model. EMS rats were randomly divided into model group， low-， medium- and high-dose groups of curcumin （60， 120， 240 mg/kg）， and Notch 1 inhibitor DAPT group （7 mg/kg）. The sham surgery group was also established， with 10 rats in each group. Rats in each group received intragastric administration or injection via caudal veins with the corresponding drugs for 4 weeks. Endometriotic lesions were observed and measured using ultrasound and visual inspection， and their volumes were calculated. Histopathological morphology of the lesion tissues was observed. The levels of interleukin-1β （IL-1β）， IL-6， and tumor necrosis factor-α （TNF-α） in the abdominal cavity fluid， as well as the mRNA and protein expression levels of Notch1， matrix metalloproteinase-9 （MMP-9）， and vascular endothelial growth factor （VEGF） in the endometriotic lesions were measured. RESULTS Compared with the model group， the volume of endometriotic lesions in the low- ， medium- and high-dose groups of curcumin and the DAPT group was significantly decreased （P＜0.05）； atrophy or disappearance of columnar epithelium， cyst disappearance； the levels of IL-1β， IL-6， and TNF- α （except for the low-dose curcumin group） in the abdominal cavity fluid， as well as the mRNA （except for MMP-9 and VEGF in the low-dose curcumin group） and protein （except for MMP-9 in the low-dose curcumin group） expression levels of Notch1， MMP-9， and VEGF in the endometriotic lesions were significantly decreased （P＜0.05）. The curcumin high-dose group and DAPT group showed superior results in most indicators compared to the curcumin low- and medium-dose groups. CONCLUSIONS Curcumin has an improving effect on EMS， and its mechanism may be related to inhibiting Notch1 signaling pathway， reducting local inflammatory responses， and inhibiting ectopic endometrial invasion and angiogenesis.