Objective To investigate the value of contrast-enhanced coded harmonic angio (CHA) in evaluating the therapeutic response to combinational treatment of transcatheter arterial embolization (TAE) and radiofrequency ablation (RFA) in hepatocellular carcinoma (HCC). Methods Nineteen patients with 28 HCCs underwent percutaneous RFA in one week after TAE. The therapeutic response was assessed by contrast-enhanced CHA and three-phase dynamic CT in one week before and after the treatment. Results After TAE and RFA, no enhancement was demonstrated in 20 HCCs (71.4%) on contrast-enhanced CHA, which were considered to be completely treated. of the 20 HCCs, no blood signal was identified in 18 on dynamic CT and the conclusion cannot be drawn in the other 2 nodules due to the retention of iodized oil. On contrast-enhanced CHA, enhanced blood signals or tumor stains were identified in the remaining eight HCCs, however, four of the eight could not be evaluated on dynamic CT because of the retention of iodized oil. Conclusions Contrast-enhanced ultrasound can effectively evaluate the treatment response of HCC in combinational therapies of TAE and RFA. It is superior to three-phase dynamic CT for no influence by retention of iodized oil.

A girl was given a diagnosis of Takayasu arteritis (TA) with thoracic aortic aneurysm (TAA) at 11 years old, and began receiving medical treatment using steroids. At age 19, her biological inflammation markers were within normal limit ; however, contrast-enhanced CT showed the enlargement of the TAA to 60 mm in diameter. The risks and benefits of traditional revascularization vs endovascular procedures were carefully considered. The presence of suitable anatomical conditions, including adequate 20-mm-long landing zones, led us to select an endovascular approach. We exposed the right common iliac artery via a retroperitoneal approach, then, original stent grafts, using Z stents covered with thin-wall polytetrafluoroethylene, were positioned in the descending aorta from the level of the left subclavian artery to the level of the celiac artery. Intraoperative arteriography showed a patent stent graft without endoleaks or enlargement of the TAA. The postoperative course was uneventful, and follow-up CT scan performed 4 years after the repair showed shrinkage of the aneurysm diameter, and no evidence of any endoleaks. We concluded that endovascular treatment for TA-related aneurysm can be useful and safe, but further follow-up is needed in this case.

Mamushi is a species of pit viper distributed throughout Japan excluling the Ryukyu Islands and sighted from spring to autumn. It is estimated that about ten people dies in a year. It is important in the rural medicine because a lot of people are bitten in mountains and fields. A total of 35 cases of mamushi viper bite were treated from 1999 to 2006 in our hospital. The patients were 17 men and 18 women ranging in age from 7 to 80 years old (average: 60). Local swelling and pain were manifest in all the cases. Sixteen patients had systemic symptoms, and toxic effects commonly appeared in the eyes. The blood tests revealed elevated CPK levels in 24 patients (69%). The elevation correlated to the seriousness of the clinical symptoms. In accordance with our manual for mamushi viper bites, all patients were hospitalized after incision for exclusion of the toxin. The median length of time before the worst symptoms began to subside was 3 days. The median length of hospitalization stays was 7 days. It took long before the patients fully recovered. The severity of envenomation was different from patient to patient and one case needed intensive care. The median of treatment period was 31 days. The quick and appropriate primary care for the mamushi viper bits is important to prevent serious complications.
Median Statistical Measurement ; symptoms <1> ; Agkistrodon halys blomhoffi ; Clinical ; Cases

Liver metastases occur in up to 60% of patients with colorectal cancer, and the control of liver metastases is considered to be of primary importance because it is a critical factor in determining prognosis. Radiofrequency ablation (RFA) therapy is one of the least invasive techniques for unresectable hepatic malignancies and can be performed safely using percutaneous, laparoscopic, or open surgical techniques. The local tumor progression rates after RFA for colorectal liver metastases range from 8.8% to 40.0%, and 5-year survival rates range from 20.0% to 48.5%. No prospective, randomized trials comparing the efficacy of RFA with that of surgical resection for colorectal liver metastases are currently available. However, some retrospective studies have reported that patients who received RFA had a survival rate similar to that observed in surgically treated groups, while other studies have reported better survival among patients who underwent surgical resection. The use of a laparoscopic or open surgical approach allows the repeated placement of RFA electrodes at multiple sites to ablate larger tumors. An accurate evaluation of treatment response is very important for the success of RFA therapy because a sufficient safety margin (at least 0.5 cm) can prevent local tumor progression. This review critically summarizes the current status of RFA for liver metastases from colorectal cancer.
Colorectal Neoplasms ; Electrodes ; Humans ; Liver ; Neoplasm Metastasis ; Prognosis ; Survival Rate

Drainage therapy for malignant biliary obstruction (MBO) includes trans-papillary endoscopic retrograde biliary drainage (ERBD), percutaneous transhepatic biliary drainage (PTBD), and transgastrointestinal endoscopic ultrasound-guided biliary drainage (EUS-BD). With the development of chemotherapy, many MBO cases end up needing endoscopic reintervention (E-RI) for recurrent biliary obstruction. To achieve a successful E-RI, it is necessary to understand the various findings regarding E-RI in MBO cases reported to date. Therefore, in this review, we focus on E-RI for ERBD of distal MBO, ERBD of hilar MBO, and EUS-BD. To plan an appropriate E-RI strategy for biliary stent occlusion for MBO, the following must be considered on a case-by-case basis: the urgency of the drainage, the cause of the occlusion, the original route of drainage (PTBD/ERBD/EUS-BD), the initial stent used (plastic stent or self-expandable metallic stent), and in the case of self-expandable metallic stents, the type used (fully covered or uncovered). Regardless of the original method of stent placement, if the inflammation caused by obstructive cholangitis is severe and/or the patient is in shock, PTBD should be considered as the first choice. Finally, it is important to keep in mind that in many cases, performing E-RI will be difficult.

The double-guidewire method has been increasingly used in endoscopic procedures for biliary and pancreatic diseases in recent years, including endoscopic retrograde cholangiopancreatography and endoscopic ultrasonography-related procedures. In addition, double-lumen catheters with uneven distal and proximal lumen openings have been introduced, making it possible to easily create a double-guidewire situation, and the usefulness of the double-guidewire technique using uneven double-lumen cannulas has been widely reported. Although the advantages of using two guidewires depend on the particular situation and the appropriate use of the two guidewires, deepening the knowledge of the double-guidewire method will contribute greatly to troubleshooting in daily practice. In this review, the usefulness of the double-guidewire technique is discussed with respect to two main areas: selective insertion of guidewires and devices and biliary cannulation.

With the development of more advanced methods for the diagnosis and treatment of diseases, the data required for medical care are becoming complex, and misinterpretation of information due to human error may result in serious consequences. Human error can be avoided with the support of artificial intelligence (AI). AI models trained with various medical data for diagnosis and management of liver diseases have been applied to hepatitis, fatty liver disease, liver cirrhosis, and liver cancer. Some of these models have been reported to outperform human experts in terms of performance, indicating their potential for supporting clinical practice given their high-speed output. This paper summarizes the recent advances in AI for liver disease and introduces the AI-aided diagnosis of liver tumors using B-mode ultrasonography.

No abstract available.
Constriction, Pathologic ; Pancreatic Ducts ; Pancreatic Neoplasms