Biodegradable Microspheres for Transarterial Chemoembolization in Malignant Liver Disease.

Transarterial chemoembolization (TACE) has revolutionized the treatment landscape for malignant liver disease, offering localized therapy with reduced systemic toxicity. This manuscript delves into the use of degradable microspheres (DMS) in TACE, exploring its potential advantages and clinical applications. DMS-TACE emerges as a promising strategy, offering temporary vessel occlusion and optimized drug delivery. The manuscript reviews the existing literature on DMS-TACE, emphasizing its tolerability, toxicity, and efficacy. Notably, DMS-TACE demonstrates versatility in patient selection, being suitable for both intermediate and advanced stages. The unique properties of DMS provide advantages over traditional embolic agents. The manuscript discusses the DMS-TACE procedure, adverse events, and tumor response rates in HCC, ICC, and metastases.

Percutaneous cholecystostomy: techniques and applications.

Acute cholecystitis (AC) is a critical condition requiring immediate medical attention and treatment and is one of the most frequently encountered acute abdomen emergencies in surgical practice, requiring hospitalization. Laparoscopic cholecystectomy is considered the favored treatment for patients with AC who are fit for surgery. However, in high-risk patients considered poor surgical candidates, percutaneous cholecystostomy (PC) has been suggested and employed as a safe and reliable alternative option. PC is a minimally invasive, nonsurgical, image-guided intervention that drains and decompresses the gallbladder, thereby preventing its perforation and sepsis. It can act as a bridge to surgery, but it may also serve as a definitive treatment for some patients. The goal of this review is to familiarize physicians with PC and, more importantly, its applications and techniques, pre- and post-procedural considerations, and adverse events.

Feasibility and Clinical Value of Intraprocedural Doppler Ultrasonography Blood Flow Parameters During Peripheral Endovascular Procedures for Limb Salvage: A Pilot Study.

PURPOSE: To investigate whether Doppler ultrasound (DUS) blood flow parameters could serve as quantifiable functional endpoints of peripheral endovascular arterial procedures for chronic limb-threatening ischemia (CLTI), influencing wound healing. METHODS: This is a prospective single-center study investigating intraprocedural DUS parameters (pulsatility index [PI] and pedal acceleration time [PAT]) in quantifying immediate hemodynamic alterations in consecutive CLTI patients with wound, ischemia, and foot infection wound class ≥1 undergoing endovascular interventions. Primary endpoints were feasibility of preendovascular and postendovascular treatment measurements of PI/PAT, quantification of immediate PI/PAT modifications of the posterior and anterior foot circulation following revascularization, the correlation between PI and PAT, and 6-month complete wound healing. Secondary endpoints included the 6-month limb salvage (no major amputation) and complete and partial wound healing rates. RESULTS: A total of 28 patients (75.0% male) were enrolled, and 68 vessels were treated. The overall mean PAT values significantly decreased from 154.15±70.35 ms preprocedural to 107.21±49.6 ms postprocedural (p<0.01), and the mean PI values significantly increased from 0.93±0.99 to 1.92±1.96 (p<0.01). Postprocedural PAT at the anterior tibial (r2=0.804; p=0.346) and the posterior tibial arteries (r2=0.784; p=0.322) had a strong correlation and postprocedural PI at the anterior tibial (r2=0.704; p=0.301) and the posterior tibial arteries (r2=0.707; p=0.369) had a good correlation with 6-month complete wound healing. The 6-month complete and partial wound healing rates were 38.1% and 47.6%, respectively. Limb salvage was 96.4% and 92.4% at 6 and 12 months of follow-up, respectively. CONCLUSIONS: Pedal acceleration time and PI accurately detected immediate hemodynamic changes of foot perfusion following revascularization and could serve as prognostic factors of wound healing in patients with CLTI. CLINICAL IMPACT: Intraprocedural measurement of simple Doppler ultrasound blood flow parameters, Pulsatility Index (PI) and Pedal Acceleration Time (PAT), accurately detected immediate hemodynamic changes of foot perfusion following endovascular revascularization and could therefore serve as intraprocedural prognostic factors of wound healing in patients with chronic limb-threatening ischemia. This is the first time that PI has been proposed as a hemodynamic index of successful angioplasty outcome. The optimization of intraprocedural PAT and PI could be used to guide angioplasty and predict clinical success.

US-guided trocar versus Seldinger technique for percutaneous cholecystostomy (TROSELC II trial).

OBJECTIVES: The purpose of this study is to investigate the safety and effectiveness of the US-guided bedside trocar vs. the Seldinger technique for percutaneous cholecystostomy (PC) procedures. METHODS: This is a prospective single-center, randomized, controlled trial (RCT) comparing the trocar (group T; 50 patients [27 men]; mean [± SD] age, 74.16 ± 15.59 years) with the Seldinger technique for PC (group S; 50 patients [23 men]; mean [± SD] age, 80.78 ± 14.09 years) in consecutive patients undergoing the procedure in a bedside setting with the sole employment of US as a guidance modality. Primary outcomes consisted of technical success and complications associated with the procedure. Secondary outcome measures involved procedure duration, intra-/post-procedure pain evaluation, and clinical success. RESULTS: PC was technically successful for all 100 patients. Clinical success rates were similar between group T and S (94% vs. 92%, respectively; p = 0.34). Equal total procedure-related complications were noted in both groups (4% vs. 4%; p = 0.5). A minor bleeding event (bile mixed with blood) occurred in one patient (2%) in group T and one patient (2%) in group S; accidental catheter dislodgement in one patient (2%) from group T, and a small biloma in one patient (2%) from group S. No procedure-related deaths or major bleeding events were noted. PC was significantly faster in group T (1.41 ± 1.13 vs. 4.41 ± 2.68 min; p < 0.001). Mean pain score during PC was significantly lower in group T compared with group S at 12 h of follow-up (1.43 ± 1.45 vs. 3.36 ± 2.05; p < 0.01). CONCLUSION: US-guided bedside trocar technique for PC was equally effective and safe as the Seldinger technique, but it was faster and simpler to perform and led to reduced pain following the procedure.

Navigation Guidance for Percutaneous Splanchnic Nerve Radiofrequency Neurolysis: Preliminary Results.

Background and Objectives: To describe preliminary results upon the application of the "Cube Navigation System" (CNS) for computed tomography (CT)-guided splanchnic nerve radiofrequency neurolysis. Materials and Methods: CT-guided splanchnic nerve neurolysis was performed in five patients; in all cases, neurolysis was performed under CT guidance using the CNS. The mean patient age was 71.6 years (range 54-81 years; male/female: 5/0). Technical success, parameters of the neurolysis session and complications were evaluated. Technical success was defined as a needle position on the defined target. Session parameters included procedure time and number of scans. The CIRSE reporting system was used for complications' classification and grading. Results: Technical success was obtained in all cases; in 1/5 patients, a slight correction in needle orientation was necessary. Mean procedure time was 12.4 min (range 8-19 min); an average of four CT scans was recorded in the five neurolysis sessions. There were no complications or material failures reported in the present study. Conclusions: Preliminary results of the present study show that computed tomography (CT)-guided splanchnic nerve radiofrequency neurolysis using the CNS is an accurate and time-efficient percutaneous procedure. More prospective and comparative studies with larger patient samples are necessary for verification of this system as well as for drawing broader conclusions.

Computed Tomography-Guided Percutaneous Radiofrequency Ablation of the Splanchnic Nerves as a Single Treatment for Pain Reduction in Patients with Pancreatic Cancer.

The aim of this paper is to prospectively evaluate the efficacy and safety of percutaneous computed tomography (CT)-guided radiofrequency (RF) neurolysis of splanchnic nerves as a single treatment for pain reduction in patients with pancreatic cancer. Patients with pancreatic ductal adenocarcinoma suffering from abdominal pain refractory to conservative medication who underwent CT-guided neurolysis of splanchnic nerves by means of continuous radiofrequency were prospectively evaluated for pain and analgesics reduction as well as for survival. In all patients, percutaneous neurolysis was performed with a bilateral retrocrural paravertebral approach at T12 level using a 20 Gauge RF blunt curved cannula with a 1cm active tip electrode. Self-reported pain scores were assessed before and at the last follow-up using a pain inventory with numeric visual scale (NVS) units. The mean patient age was 65.4 ± 10.8 years (male-female: 19-11). The mean pain score prior to RF neurolysis of splanchnic nerves was 9.0 NVS units; this score was reduced to 2.9, 3.1, 3.6, 3.8, and 3.9 NVS units at 1 week, 1, 3, 6, and 12 months respectively (p < 0.001). Significantly reduced analgesic usage was reported in 28/30 patients. Two grade I complications were reported according to the Cardiovascular and Interventional Radiological Society of Europe (CIRSE) classification system. According to the results of the present study, solely performed computed tomography-guided radiofrequency neurolysis of splanchnic nerves can be considered a safe and efficacious single-session technique for pain palliation in patients with pancreatic ductal adenocarcinoma suffering from abdominal pain refractory to conservative medication. Although effective in pain reduction the technique seems to have no effect upon survival improvement.