Objective:To investigate Intraflagellar Transport 80 (IFT80) protein expression in bone, lung, pancreatic, stomach, in-testinal, prostate, breast, and ovarian cancers to explore its mechanism in cancer cell proliferation and to diagnose and identify new tar-gets in cancer treatment. Methods:Immunohistochemistry was used to investigate the expression of IFT80 in gastric cancer tissue of different stages and in eight other kinds of human cancer tissues. We studied the relationship between cancer cell proliferation and inhi-bition of IFT80. Immunofluorescence method and cell culture were used to study the cilia and IFT80. Results:Results showed the fol-lowing:a) the expression of IFT80 was high in gastric and lung carcinoma tissues, moderate in breast and colorectal cancers, low in bone and ovarian cancers, and nearly absent in prostate and pancreatic cancers;b) inhibition of IFT80 in the A549 cancer cell line accel-erated cell proliferation and resulted in shorter, lower quality cilia;and c) IFT80 was abundantly expressed in cancer tissues of well-dif-ferentiated stage-IIA gastric cancer and normal gastric tissues, but was hardly expressed in late-stage, poorly differentiated gastric can-cer. IFT80 could have various degrees of expression in gastric carcinoma of other stages and differentiation. Conclusions:Different can-cer organs showed variation in IFT80 expression. IFT80 can be distributed in the organs with mechanical motion function, such as lungs and stomach. IFT80 is distributed on the cell cilia and can adjust the number and length of the cilia by reducing IFT80 protein ex-pression. Through a variety of ways, IFT80 directly or indirectly participates in the proliferation of cancer cells. Thus, the lowest or nearly zero expression of IFT80 can be seen in cancer tissues of high-grade malignancy, such as advanced cancers with poor differentia-tion.

Objective To introduce the surgical strategy of enlarged laminectomy (with partial facet joint dissection to expose the nerve root), and to discuss its benefit for cervical ossification of the posterior longitudinal ligament(OPLL) with myelopathy. Methods Totally 82 patients with cervical OPLL were treated by enlarged laminectomy from January 1998 to December 2005. There were 47 males and 35 females, with an average age of 57 years (ranged, 39-84 years). Among them, there were 31 cases of the solitary type, 40 cases of the continuous type, and 11 cases of the mixed type. JOA scoring system and the visual analogue scale (VAS) scoring were applied to evaluate the neurological function and neck/shoulder pain respectively.Ishihara method was employed to measure cervical curvature index(CCI). The degree of spinal cord backward expanding and displacement were calculated in MR1. Results The mean decompression length was 5.2 (4-6) segments. The mean follow-up duration was 41 months (ranged, 13-58 months). JOA score has improved from 10.9(7-15) preoperatively to 13.9(11-17) postoperatively (t=14.65, P＜0.01). The excellent and good rate was 98.7%. The palsy of C5 nerve root occurred in only 2 patients, both recovered after surgery. Zhe mean postoperative VAS score was 1.4(1-3), comparing with the preoperative score of 5.3 (4-6). The pain in neck/shoulder was alleviated obviously (t=15.46, P＜0.01 ). CCI decreased from 18.8% to 10.5%(t=5.03, P＜0.01 ),but did not follow by neuron function deterioration. MRI indicated that the cross-sectional area at the level of maximum compression of the dural sac increased from 85.4 mm2 preoperatively to 153.8 mm2 postoperatively (t=16.33, P＜0.01), and the mean spinal cord posterior shift was 6.2 mm (t=15.35, P＜0.01). Conclusion The enlarged laminectomy is proved to be effective in treating cervical OPLL, in terms of significant posterior shift of the spinal cord, relief of cervical/shoulder pain, lower rate of the palsy of C5 nerve root, with no recurrence of spinal cord compression symptom.

Objective To compare the difference of T-stage between Chinese 2017 staging system and the 2008 staging system for nasopharyngeal carcinoma,and to investigate the optimization of T-stage and provide suggestions for further revision.Methods The MRI data of 183 patients with histology-proven newly diagnosed nasopharyngeal carcinoma in our hospital were enrolled from September 2009 to May 2017.All the anatomic sites mentioned in the two staging systems were marked,and all patients were staged according to the 2017 staging system and the 2008 staging system for nasopharyngeal carcinoma.Comparisons of T-stage were made between the two staging systems.Results Involvement of oropharynx,nasopharynx,prevertebral muscles,cervical vertebra,hypopharynx and orbit were 100％ accompanied with other same or more advanced T-stage classifications.The invasion rates of the cervical vertebra,orbit and hypopharynx were very low (all ＜ 5.00％).The incidence of involvement of pterygoid structure was 15.30％,most of which incorporated with erosion of skull base,only 1 case was invaded alone.All cases of involvement of paranasal sinuses were incorporated with erosion of skull base.Compared with the 2008 staging system,the consti-tuent ratio of T1 + T2 in the 2017 staging system increased from 36.61％ to 61.75％,and that of T3 + T4decreased from 63.39％ to 38.25％,the constituent ratio of T-stage between the 2017 staging system and the 2008 staging system was significantly different (x2 =26.94,P ＜ 0.001).There was moderate consistency of T-stage between these two staging systems (Kappa =0.514,P ＜ 0.001).Conclusion The T-stage of 2017 staging system still has a larger simplification and optimization space.Therefore,according to the principle of concise,the T-stage parameters including oropharynx,nasopharynx,prevertebral muscles,paranasal sinuses,cervical vertebra,orbit and hypopharynx are recommend to delete,and it does not have an impact on the composition of T-stage.We suggest that the pterygoid structure shall combine with the skull base to be one anatomical structure.

Objective: To compare survival outcomes between cervical adenocarcinoma (ADC) and squamous cell carcinoma (SCC) using a propensity score matching (PSM) analysis based on the Surveillance, Epidemiology, and End Results (SEER) Program. Methods: Patients diagnosed with cervical cancer between 1998 and 2016 were identified from the SEER database. The Kaplan-Meier method and Cox regression analysis were used to analyze survival. A subgroup analysis of overall survival (OS) between patients with ADC and SCC was performed after the 1:1 PSM analysis. Results: Of the 33,148 patients, 24,591 (79.19%) had SCC and 8,557 (25.81%) had ADC. In the unmatched cohort, after adjustment in multivariate analysis, patients with ADC had a worse prognosis than patients with SCC (hazard ratio [HR]=1.12; 95% confidence interval [CI]=1.07– 1.18; p<0.001). In the propensity matched cohort, Kaplan-Meier analysis and subgroup analysis showed that ADC was associated with a worse prognosis than SCC (p=0.001). An analysis stratified by SEER stage revealed a worse prognosis for patients with ADC patients presenting with a regional disease than patients with SCC (HR=1.24; 95% CI=1.14–1.36 p<0.001), but no statistically significant differences were observed between the localized disease (HR=0.97; 95% CI=0.86–1.10; p=0.664) and distant disease (HR=1.09; 95% CI=0.97–1.22; p=0.162) subgroups. Conclusion The significant differences in survival outcomes between patients with cervical ADC and SCC were only observed in the regional disease subgroup, but not in the localized disease and distant disease subgroups.

Objective:To analyze the different clinicopathological features of intrahepatic cholangiocarcinoma with and without viral hepatitis.Methods:The clinicopathological data of 79 intrahepatic cholangiocarcinoma cases from Mar 2012 to Sep 2018 at Henan Provincial People's Hospital were retrospectively analyzed.Results:Twenty-five of the 79 patients with intrahepatic cholangiocarcinoma were accompanied by viral hepatitis. Those with viral hepatitis had a lower mean age at onset than those without [(53±11) years vs. (60±11) years, P=0.011], higher proportion of male patients (80% vs. 52%, P=0.017), higher AFP positive rate (40% vs. 19%, P=0.041), lower CA19-9 positive rate (48% vs. 72%, P=0.036), tend to occur in the right liver lobe (76% vs. 44%, P=0.009), a lower rate of bile duct invasion (16% vs. 41%, P=0.03), and were more likely to be mass type (mass type proportion 96% vs. 72%, P=0.032). Conclusions:Viral hepatitis is common in intrahepatic cholangiocarcinoma. Intrahepatic cholangiocarcinoma with and without viral hepatitis differ in clinicopathology. Intrahepatic cholangiocarcinoma with viral hepatitis is more likely to have the characteristics of hepatocellular carcinoma, while intrahepatic cholangiocarcinoma without viral hepatitis is more likely to have the characteristics of cholangiocarcinoma.