A serial case study of the combined use of intraoperative CT and surgical navigation system for the removal of small foreign bodies in the maxillofacial region

Purpose:The removal of small foreign bodies embedded within the deep soft tissues of the maxillofacial region is a complex and challenging task for maxillofacial surgeons.The purpose of this study was to explore the efficacy of the combination of intraoperative CT and surgical navigation for the removal of small foreign objects in the maxillofacial region.Methods:A serial case study was conducted involving all consecutive patients who underwent surgical removal of small foreign bodies in the maxillofacial region.The combination of intraoperative CT and a surgical navigation system was used at a single medical institution from January 2018 to December 2022.Comprehensive data,including patient demographics,characteristics of the foreign bodies,previous surgical interventions,duration of the surgical procedure,and removal success rate were collected for this study.Relevant data were recorded into Microsoft Excel sheet and analyzed using SPSS version 22.0.Results:Nine patients(6 males and 3 females)were included in this study,with an average age of 37 years.Each patient had previously undergone an unsuccessful removal attempt utilizing conventional surgical methods based on preoperative CT imaging or C-arm guidance at a local healthcare facility.Four patients also experienced unsuccessful attempts with preoperative CT image-based navigation systems.However,by employing the combined approach of intraoperative CT and surgical navigation,the foreign bodies were successfully removed in all 9 patients.The mean duration of the surgical procedure was 59 min,and the average size of the foreign bodies was approximately 26 mm^(3).Postoperative follow-up exceeding 6 months revealed no complications.Conclusion:The combined use of a surgical navigation system and intraoperative CT represents a potent and effective strategy for the precise localization and subsequent removal of small foreign bodies from the soft tissue structures of the maxillofacial region.This integrative approach appears to increase the success rate of surgical interventions in such cases.

New approaches to diagnostics and treatment of cholangiocellular cancer based on photonics methods

Cholangiocellular cancer(CCC)is an oncological disease of the bile ducts characterized by a high mortality rate.To date,the use of standard methods for the diagnosis and treatment of CCC has not been able to reduce mortality from this disease.This work presents the results of fluorescence diagnostics(FD),which consists in using a modified optical fiber and photodynamic therapy(PDT)using a therapeutic laser instead of a low-intensity laser.This technique was tested on 43 patients in a clinical setting.The results obtained indicate a direct correlation between spectroscopic and video FD methods.Furthermore,a direct correlation was found between the photobleaching of a chlorin e6-based photosensitizer,with the commercial names of PhotoIon Radachlorin and Photoran and stricture regression.Our findings demonstrate the possibility of using a therapeutic laser with a wavelength of 660 nm for both diagnosis and treatment of bile ducts cancer,which results in a significant reduction of the operation time without decreasing its effectiveness.

直肠黏膜柱状缝合术治疗环状混合痔65例临床观察

为观察直肠黏膜柱状缝合术治疗环状混合痔的疗效，将65例环状混合痔患者采用直肠黏膜柱状缝合术治疗。结果显示，患者满意度评分为（89．25±7．91）分。出现远期并发症20例（30．77％），其中出血5例（7．69％），肛门疼痛或坠胀6例（9．23％），残留皮赘9例（13．85％）；复发2例（3．08％），术中加做切扎术7例（10．77％），再次手术2例（3．08％）；改善便秘症状15例（术前便秘共15例）。结果表明，直肠黏膜柱状缝合术有一定的并发症，但在改善便秘方面有较好的疗效，且患者满意度高。