Local ablative techniques-percutaneous ethanol injection, microwave coagulation therapy and radiofrequency ablation (RFA)-have been developed to treat unresectable hepatocellular carcinoma (HCC). The success rate of p...Local ablative techniques-percutaneous ethanol injection, microwave coagulation therapy and radiofrequency ablation (RFA)-have been developed to treat unresectable hepatocellular carcinoma (HCC). The success rate of percutaneous ablation therapy for HCC depends on correct targeting of the tumor via an imaging technique. However, probe insertion often is not completely accurate for small HCC nodules, which are poorly def ined on conventional B-mode ultrasound (US) alone. Thus, multiple sessions of ablation therapy are frequently required in diffi cult cases. By means of two breakthroughs in US technology, harmonic imaging and the development of second-generation contrast agents, dynamic contrast-enhanced harmonic US imaging with an intravenous contrast agent can depict tumor vascularity sensitively and accurately, and is able to evaluate small hypervascular HCCs even when B-mode US cannot adequately characterize the tumors. Therefore, dynamic contrast-enhanced US can facilitate RFA electrode placement in hypervascular HCC, which is poorly depicted by B-mode US. The use of dynamic contrast-enhanced US guidance in ablation therapy for liver cancer is an effi cient approach. Here, we present an overview of the current status of dynamic contrast-enhanced US-guided ablation therapy, and summarize the current indications and outcomes of reported clinical use in comparison with that of other modalities.展开更多
Objective To evaluate the efficacy of electrocorticographic(ECoG) monitoring and the application of different surgical approaches in the surgical treatment of solitary supretentorial cavernous malformations with secon...Objective To evaluate the efficacy of electrocorticographic(ECoG) monitoring and the application of different surgical approaches in the surgical treatment of solitary supretentorial cavernous malformations with secondary epilepsy. Methods This study enrolled a consecutive series of 36 patients with solitary supratentorial cavernous malformations and secondary epilepsy who underwent surgery with intraoperative ECoG monitoring in the Department of Neurosurgery between January 2004 and January 2008. The patients were composed of 15 males and 21 females, aged between 8 and 52 years(mean age 27.3±2.8 years) at the time of surgery. Epilepsy history, the type of epilepsy at the presentation, lesion location, the incidence of residual epileptiform discharges, and postoperative outcomes were evaluated. Results Histopathological examination indicated cavernous malformations and hippocampal sclerosis in 36 and 5 cases, respectively. Neuronal degeneration, glial cell proliferation, and neurofibrillary tangles were found in all the resected cerebral tissues of extended lesionectomy of residual epileptic foci. Lesionectomy, anterior temporal lobectomy, anterior temporal lobectomy plus cortical thermocoagulation, extended lesionectomy, extended lesionectomy plus cortical thermocoagulation were performed in 4, 4, 1, 14, and 13 cases, respectively. Residual epileptiform discharges were captured in 9 out of the 14 patients who had additional cortical thermocoagulation. According to Engle class for postoperative outcomes, 27 cases were class I(75.00%), 5 were class II(13.89%), 2 were class III(5.56%), and 2 were class IV(5.56%), thus the total effective rate(class I+class II) was 88.89%. Neither of epilepsy history, the type of epilepsy, and the location of cavernous malformation was significantly related to outcomes(P>0.05). A significant relationship was found between the incidence of residual epileptiform discharges and outcomes(P=0.041). Conclusions Intraoperative ECoG monitoring, the application of different surgical approaches, and the resection of residual epileptic foci could produce good result in the surgical treatment of supratentorial cavernous malformation with secondary epilepsy. Postoperative residual epileptiform discharges could be a useful predictor for evaluating the outcomes.展开更多
AIM: To study the clinical outcomes of medical therapy in patients with right colonic diverticulitis. METHODS: The records of 189 patients with right colonic diverticulitis which was finally diagnosed by computed to...AIM: To study the clinical outcomes of medical therapy in patients with right colonic diverticulitis. METHODS: The records of 189 patients with right colonic diverticulitis which was finally diagnosed by computed tomography, ultrasonography, or operative findings were retrospectively reviewed. RESULTS: Of the 189 patients hospitalized for right colonic diverticulitis, the stages of diverticulitis by a modified Hinchey classification were 26 patients (13.8%) in stage 0, 139 patients (73.5%) in stage I a, 23 patients (12.2%) in stage I b, and 1 patient (0.5%) in stage Ⅲ. Medical therapy was undertaken in 185 of 189 patients (97.9%). One hundred and eighty three of 185 patients were successfully treated with bowel rest and antibiotics. Two patients in stage I b required a resection or surgical drainage because of an inadequate response to conservative treatment. Recurrent diverticulitis developed in 15 of 183 patients (8.2%) who responded to medical therapy. All 15 patients who suffered a second attack had uncomplicated diverticulitis, and were successfully treated with medical therapy.CONCLUSION: Our results indicate that right colonic diverticulitis is essentially benign and image-guided conservative treatment is primarily required.展开更多
The adaptation and integration of imaging into the process of cancer detection, diagnosis, and intervention is an area of medicine that is undergoing extremely rapid development. Radiation therapy is a prime example o...The adaptation and integration of imaging into the process of cancer detection, diagnosis, and intervention is an area of medicine that is undergoing extremely rapid development. Radiation therapy is a prime example of this change. While the objectives of these developments are clear, they raise numerous issues regarding the skills and resources that assure these technologies are appropriately integrated and applied. We will explore the basic concepts related to image guidance in various radiotherapy-related procedures with special emphasis on the clinical potentials of this impressive technology.展开更多
Objective To report the results of treatment of osteoid osteomas with wide surgical excision and CT-guided less invasive surgeries.Methods Forty-two patients were entered into this prospective study between Jan.1998 a...Objective To report the results of treatment of osteoid osteomas with wide surgical excision and CT-guided less invasive surgeries.Methods Forty-two patients were entered into this prospective study between Jan.1998 and Jan.2008.Nineteen patients underwent wide surgical excision.The lesions were in the femur(n=9),tibia(n=7),and humerus(n=3).The mean lesion diameter was(9.2±2.3)mm(range,7-16mm).Twenty-three patients(15 males and 8 females)underwent CT-guided less invasive surgeries procedures.The lesions were in the femur(n=9),tibia(n=6),acetabulum(n=4)and humerus(n=4).The mean lesion diameter was(8.1±2.7)mm(range,6-15mm).Among these 23 patients,20 patients were performed by core drill excision.Three patients were performed by radiofrequency ablation.Follow-up ranged from 16 to 68 months(mean,35 months)to assess pain,neurovascular damage,pathological fracture,movement,and recurrence.Results were categorized as success(persistent complete relief of pain)and failure(absent or incomplete relief of pain,requiring additional treatment).Results The success rates were 89%(17/19)after wide surgical excision and 96%(22/23)after less invasive surgeries,respectively,and the difference was not significant(P>0.05).Patients were hospitalized for average 8.3 d(5-15d)after wide surgical excision and 3.2d(3-5d)after less invasive surgeries(P<0.05).There were no complications such as sepsis,pathological fracture,or neurovascular damage.No further recurrences were observed during follow-up.Conclusion Less invasive surgeries has obvious advantages such as reduced cost,shorter stay in hospital and rapid convalescence.Core-drill excision can obtain sufficient material for pathologic examination.展开更多
文摘Local ablative techniques-percutaneous ethanol injection, microwave coagulation therapy and radiofrequency ablation (RFA)-have been developed to treat unresectable hepatocellular carcinoma (HCC). The success rate of percutaneous ablation therapy for HCC depends on correct targeting of the tumor via an imaging technique. However, probe insertion often is not completely accurate for small HCC nodules, which are poorly def ined on conventional B-mode ultrasound (US) alone. Thus, multiple sessions of ablation therapy are frequently required in diffi cult cases. By means of two breakthroughs in US technology, harmonic imaging and the development of second-generation contrast agents, dynamic contrast-enhanced harmonic US imaging with an intravenous contrast agent can depict tumor vascularity sensitively and accurately, and is able to evaluate small hypervascular HCCs even when B-mode US cannot adequately characterize the tumors. Therefore, dynamic contrast-enhanced US can facilitate RFA electrode placement in hypervascular HCC, which is poorly depicted by B-mode US. The use of dynamic contrast-enhanced US guidance in ablation therapy for liver cancer is an effi cient approach. Here, we present an overview of the current status of dynamic contrast-enhanced US-guided ablation therapy, and summarize the current indications and outcomes of reported clinical use in comparison with that of other modalities.
文摘Objective To evaluate the efficacy of electrocorticographic(ECoG) monitoring and the application of different surgical approaches in the surgical treatment of solitary supretentorial cavernous malformations with secondary epilepsy. Methods This study enrolled a consecutive series of 36 patients with solitary supratentorial cavernous malformations and secondary epilepsy who underwent surgery with intraoperative ECoG monitoring in the Department of Neurosurgery between January 2004 and January 2008. The patients were composed of 15 males and 21 females, aged between 8 and 52 years(mean age 27.3±2.8 years) at the time of surgery. Epilepsy history, the type of epilepsy at the presentation, lesion location, the incidence of residual epileptiform discharges, and postoperative outcomes were evaluated. Results Histopathological examination indicated cavernous malformations and hippocampal sclerosis in 36 and 5 cases, respectively. Neuronal degeneration, glial cell proliferation, and neurofibrillary tangles were found in all the resected cerebral tissues of extended lesionectomy of residual epileptic foci. Lesionectomy, anterior temporal lobectomy, anterior temporal lobectomy plus cortical thermocoagulation, extended lesionectomy, extended lesionectomy plus cortical thermocoagulation were performed in 4, 4, 1, 14, and 13 cases, respectively. Residual epileptiform discharges were captured in 9 out of the 14 patients who had additional cortical thermocoagulation. According to Engle class for postoperative outcomes, 27 cases were class I(75.00%), 5 were class II(13.89%), 2 were class III(5.56%), and 2 were class IV(5.56%), thus the total effective rate(class I+class II) was 88.89%. Neither of epilepsy history, the type of epilepsy, and the location of cavernous malformation was significantly related to outcomes(P>0.05). A significant relationship was found between the incidence of residual epileptiform discharges and outcomes(P=0.041). Conclusions Intraoperative ECoG monitoring, the application of different surgical approaches, and the resection of residual epileptic foci could produce good result in the surgical treatment of supratentorial cavernous malformation with secondary epilepsy. Postoperative residual epileptiform discharges could be a useful predictor for evaluating the outcomes.
基金Supported by The research paper scholarship of the graduate school of Kyung Hee University in the second semester of 2007
文摘AIM: To study the clinical outcomes of medical therapy in patients with right colonic diverticulitis. METHODS: The records of 189 patients with right colonic diverticulitis which was finally diagnosed by computed tomography, ultrasonography, or operative findings were retrospectively reviewed. RESULTS: Of the 189 patients hospitalized for right colonic diverticulitis, the stages of diverticulitis by a modified Hinchey classification were 26 patients (13.8%) in stage 0, 139 patients (73.5%) in stage I a, 23 patients (12.2%) in stage I b, and 1 patient (0.5%) in stage Ⅲ. Medical therapy was undertaken in 185 of 189 patients (97.9%). One hundred and eighty three of 185 patients were successfully treated with bowel rest and antibiotics. Two patients in stage I b required a resection or surgical drainage because of an inadequate response to conservative treatment. Recurrent diverticulitis developed in 15 of 183 patients (8.2%) who responded to medical therapy. All 15 patients who suffered a second attack had uncomplicated diverticulitis, and were successfully treated with medical therapy.CONCLUSION: Our results indicate that right colonic diverticulitis is essentially benign and image-guided conservative treatment is primarily required.
文摘The adaptation and integration of imaging into the process of cancer detection, diagnosis, and intervention is an area of medicine that is undergoing extremely rapid development. Radiation therapy is a prime example of this change. While the objectives of these developments are clear, they raise numerous issues regarding the skills and resources that assure these technologies are appropriately integrated and applied. We will explore the basic concepts related to image guidance in various radiotherapy-related procedures with special emphasis on the clinical potentials of this impressive technology.
文摘Objective To report the results of treatment of osteoid osteomas with wide surgical excision and CT-guided less invasive surgeries.Methods Forty-two patients were entered into this prospective study between Jan.1998 and Jan.2008.Nineteen patients underwent wide surgical excision.The lesions were in the femur(n=9),tibia(n=7),and humerus(n=3).The mean lesion diameter was(9.2±2.3)mm(range,7-16mm).Twenty-three patients(15 males and 8 females)underwent CT-guided less invasive surgeries procedures.The lesions were in the femur(n=9),tibia(n=6),acetabulum(n=4)and humerus(n=4).The mean lesion diameter was(8.1±2.7)mm(range,6-15mm).Among these 23 patients,20 patients were performed by core drill excision.Three patients were performed by radiofrequency ablation.Follow-up ranged from 16 to 68 months(mean,35 months)to assess pain,neurovascular damage,pathological fracture,movement,and recurrence.Results were categorized as success(persistent complete relief of pain)and failure(absent or incomplete relief of pain,requiring additional treatment).Results The success rates were 89%(17/19)after wide surgical excision and 96%(22/23)after less invasive surgeries,respectively,and the difference was not significant(P>0.05).Patients were hospitalized for average 8.3 d(5-15d)after wide surgical excision and 3.2d(3-5d)after less invasive surgeries(P<0.05).There were no complications such as sepsis,pathological fracture,or neurovascular damage.No further recurrences were observed during follow-up.Conclusion Less invasive surgeries has obvious advantages such as reduced cost,shorter stay in hospital and rapid convalescence.Core-drill excision can obtain sufficient material for pathologic examination.