To evaluate the prevalence of sarcopenia among European patients with resectable hepatocellular carcinoma (HCC) and to assess its prognostic impact on overall and disease-free survival.
...Identification of preoperative prognostic factors in liver surgery for HCC is required to better select patients and improve survival. Recent studies have shown that preoperative discrimination of patients with low skeletal muscle mass (sarcopenic patients) using computed tomography was associated with morbidity and mortality after liver and colorectal surgery. Assessment of sarcopenia could be used to evaluate patients before hepatectomy for HCC.
All consecutive patients who underwent hepatectomy for HCC in our institution, between February 2006 and September 2012, were included. Univariate and multivariate analyses evaluating prognostic factors of postoperative mortality and cancer recurrence were performed, including preoperative, surgical, and histopathological factors.
Among 198 patients who underwent hepatectomy for HCC, 109 patients had an available computed tomographic scan and represent the study cohort. After a median follow-up of 21.23 months, 27 patients (24.8%) died. There were 20 deaths among the 59 patients who had sarcopenia and only 7 deaths in the nonsarcopenic group. Sarcopenic patients had significantly shorter median overall survival than nonsarcopenic patients (52.3 months vs 70.3 months; P = 0.015). On multivariate analysis, sarcopenia was found to be an independent predictor of poor overall survival (hazard ratio = 3.19; P = 0.013) and disease-free survival (hazard ratio = 2.60; P = 0.001).
Sarcopenia was found to be a strong and independent prognostic factor for mortality after hepatectomy for HCC in European patients and could be used to evaluate eligibility of patients with HCC before surgery.
Objectives
Curative treatment of oligometastatic pulmonary disease aims at eradication of all metastases. Radiofrequency ablation (RFA) has been shown to be an efficient method and the frequency of ...local tumor progression (LTP) should be minimized. The objective of this study was to determine the morphological and treatment-related risk factors for LTP after RFA of pulmonary metastases.
Materials and methods
All patients treated with RFA for pulmonary metastases from 2002 to 2014 were reviewed. All LTPs from 2011 to 2014 were individually matched on the basis of tumor size, number, and histology. In total, 48 LTPs and 112 controls were blindly analyzed for morphological factors including vicinity of bronchus and vessels as well as treatment-related factors such as the size of the ablation zone and ablation margins.
Results
In the simple regression analysis, the significant predictive variables were ≤ 5-mm distance to a large bronchus (OR = 4.94;
p
= 0.0095) or large vessel (OR = 7.09;
p
< 0.001), minimal ablation margin (≤ 5 mm (OR = 42.67;
p
< 0.001), and a central-peripheral ablation offset/ablation zone size > 0.36 (OR = 13.83;
p
= 0.013). In the multiple regression model, only a minimal ablation margin ≤ 5 mm remained a significant risk factor for LTP.
Conclusion
Only the minimal ablation margin remains significant in the multiple regression analysis; the other factors are presumably surrogates of an insufficient ablation margin. Improvement of lung RFA outcomes can probably be obtained by immediate post RFA evaluation of ablation margins to ensure a minimal ablation margin of at least 5 mm.
Key Points
•
A distance < 5 mm to a bronchus or vessel of over 3 mm diameter is associated with insufficient ablation margin and thus risk factors for local tumor progression after pulmonary radiofrequency ablation.
•
A minimal ablation margin of > 5 mm after pulmonary RFA is associated with significantly less local tumor progression and should be looked for at the end of treatment session before needle removal in order to decrease local tumor progression.
•
Tumor location, pleural contact, occurrence of intra-alveolar hemorrhage, pulmonary atelectasis, and pneumothorax are not associated with an increased risk of local tumor progression.
To assess the feasibility, safety and local tumor control of cryoablation for treatment of pulmonary metastases.
This Health Insurance Portability and Accountability Act (HIPAA) compliant, ...IRB-approved, multicenter, prospective, single arm study included 40 patients with 60 lung metastases treated during 48 cryoablation sessions, with currently a minimum of 12 months of follow-up. Patients were enrolled according to the following key inclusion criteria: 1 to 5 metastases from extrapulmonary cancers, with a maximal diameter of 3.5 cm. Local tumor control, disease-specific and overall survival rates were estimated using the Kaplan–Meier method. Complications and changes in physical function and quality of life were also evaluated using Karnofsky performance scale, Eastern Cooperative Oncology Group performance status classification, and Short Form-12 health survey.
Patients were 62.6 ± 13.3 years old (26–83). The most common primary cancers were colon (40%), kidney (23%), and sarcomas (8%). Mean size of metastases was 1.4 ± 0.7 cm (0.3–3.4), and metastases were bilateral in 20% of patients. Cryoablation was performed under general anesthesia (67%) or conscious sedation (33%). Local tumor control rates were 56 of 58 (96.6%) and 49 of 52 (94.2%) at 6 and 12 months, respectively. Patient's quality of life was unchanged over the follow-up period. One-year overall survival rate was 97.5%. The rate of pneumothorax requiring chest tube insertion was 18.8%. There were three Common Terminology Criteria for Adverse Events grade 3 procedural complications during the immediate follow-up period (pneumothorax requiring pleurodesis, noncardiac chest pain, and thrombosis of an arteriovenous fistula), with no grade 4 or 5 complications.
Cryoablation is a safe and effective treatment for pulmonary metastases with preserved quality of life following intervention.
: Consensus guidelines of the European Society for Medical Oncology (ESMO) (2016) provided recommendations for the management of lung metastases. Thermal ablation appears as a tool in the management ...of these secondary pulmonary lesions, in the same manner as surgical resection or stereotactic ablative radiotherapy (SABR).
: Indications, technical considerations, oncological outcomes such as survival (OS) or local control (LC), prognostic factors and complications of thermal ablation in colorectal cancer lung metastases were reviewed and put into perspective with results of surgery and SABR.
: LC rates varied from 62 to 91%, with size of the metastasis (<2 cm), proximity to the bronchi or vessels, and size of ablation margins (>5 mm) as predictive factors of LC. Median OS varied between 33 and 68 months. Pulmonary free disease interval <12 months, positive carcinoembryonic antigen, absence of neoadjuvant chemotherapy and uncontrolled extra-pulmonary metastases were poor prognostic factors for OS. While chest drainage for less than 48 h was required in 13 to 47% of treatments, major complications were rare.
: Thermal ablation of a selected subpopulation of patients with colorectal cancer lung metastases is safe and can provide excellent LC and delay systemic chemotherapy.
Image-guided lung metastasis ablation: a literature review Prud'homme, Clara; Deschamps, Frederic; Moulin, Benjamin ...
International journal of hyperthermia,
10/1/2019, 2019-10-00, 2019-10-01, 20191001, Letnik:
36, Številka:
2
Journal Article
Recenzirano
Odprti dostop
Purpose: To review the available options of percutaneous ablation of lung metastasis.
Methods: General indications, prognostic factors, and image guidance of percutaneous lung ablations were ...reviewed. Specificities, technical aspects, advantages and limitations of each technic were highlighted. Complications and follow up where also reviewed.
Results: Image-guided, percutaneous ablation is of interest for patients with a limit number (<3-5) small metastases (<2-3 cm). Other predictive factors have been reported such as the disease-free interval, the primary tumor, or the proximity with large vessels or bronchus. Radiofrequency ablation (RFA) is the most reported technic, with local control rate >90% for small tumors, and a very low complication rate. Microwave (MWA) and cryoablation are alternative technics developed in the last 15 years to overcome RFA limitations, with encouraging results. Larger ablations zones and less heat sink effect have been described with MWA. On the other hand, cryoablation allows painless treatments under conscious sedation and/or local anesthesia, high accessibility of difficult locations and promising results on prospective multicenter series. Although irreversible electroporation (IRE) could be used for lesions close to main blood vessels as it is not limited by the heat sink effect and does not have significant effects on connective tissue, allowing to treat lesions near to vital organs, preliminary results for lung metastasis are disappointing.
Conclusion: Percutaneous ablation of lung metastases, whatever technic is used, is feasible, with high local control rate, and acceptable complication rate. Although indications seem clear enough, validation through controlled trials is mandatory.
Celotno besedilo
Dostopno za:
DOBA, IZUM, KILJ, NUK, PILJ, PNG, SAZU, SIK, UILJ, UKNU, UL, UM, UPUK
To assess the safety and local recurrence-free survival in patients after cryoablation for treatment of pulmonary metastases.
This multicenter, prospective, single-arm, phase 2 study included 128 ...patients with 224 lung metastases treated with percutaneous cryoablation, with 12 and 24 months of follow-up. The patients were enrolled on the basis of the outlined key inclusion criteria, which include one to six metastases from extrapulmonary cancers with a maximal diameter of 3.5 cm. Time to progression of the index tumor(s), metastatic disease, and overall survival rates were estimated using the Kaplan–Meier method. Complications were captured for 30 days after the procedure, and changes in performance status and quality of life were also evaluated.
Median size of metastases was 1.0 plus or minus 0.6 cm (0.2–4.5) with a median number of tumors of 1.0 plus or minus 1.2 cm (one to six). Local recurrence-free response (local tumor efficacy) of the treated tumor was 172 of 202 (85.1%) at 12 months and 139 of 180 (77.2%) at 24 months after the initial treatment. After a second cryoablation treatment for recurrent tumor, secondary local recurrence-free response (local tumor efficacy) was 184 of 202 (91.1%) at 12 months and 152 of 180 (84.4%) at 24 months. Kaplan–Meier estimates of 12- and 24-month overall survival rates were 97.6% (95% confidence interval: 92.6–99.2) and 86.6% (95% confidence interval: 78.7–91.7), respectively. Rate of pneumothorax that required pleural catheter placement was 26% (44/169). There were eight grade 3 complication events in 169 procedures (4.7%) and one (0.6%) grade 4 event.
Percutaneous cryoablation is a safe and effective treatment for pulmonary metastases.
Objectives
The failure rate following prostate artery embolization (PAE) is around 20%, which may in part result from inadequate embolization. Prostate contrast retention (PCR) adequacy on immediate ...post-embolization cone-beam CT may provide better assessment of embolization completeness than arterial contrast stasis seen on fluoroscopy alone. The aim of this study was to evaluate outcomes of PAE using PCR adequacy as the procedural endpoint.
Methods
A retrospective cohort study of all PAE cases using this technique at a single large volume center was conducted. Following initial embolization of the main prostatic arteries, if PCR was inadequate, additional embolization was performed. Technical success (adequate PCR) was defined as > 75% global prostate gland contrast staining. Clinical success was determined in accordance to CIRSE standards of practice.
Results
One hundred sixty-five patients (mean age 68 ± 8.4 years) underwent PAE from June 2017 to March 2019. Technical and clinical success rates were 98.8% and 96.4% respectively. Clinical success rate was significantly higher in patients with adequate PCR. International Prostate Symptom Scores (IPSS) and Quality of Life (QoL) scores significantly improved at 1-, 3-, 6-, and 12-month follow-up when compared to baseline. Prostate volume (PV) and post-voiding residual bladder volume were significantly reduced at 3, 6, and 12 months in comparison to baseline. Mild (Clavien-Dindo grade I/II) and moderate (grade III) complication rates were 12.1% and 3.6% respectively.
Conclusions
By using PCR adequacy as a guide to determine the procedure endpoint for PAE, it may be possible to achieve more complete embolization and thus higher clinical success rates.
Key Points
• By using PCR adequacy as a guide to determine the procedure endpoint for PAE, it may be possible to achieve more complete embolization and thus higher clinical success rates.
To review available evidence on thermal ablation of oligometastatic colorectal cancer.
Technical and cancer specific considerations for percutaneous image-guided thermal ablation of oligometastatic ...colorectal metastases in the liver and lung were reviewed. Ablation outcomes are compared to surgical and radiation therapy literature.
The application of thermal ablation varies widely based on tumor burden, technical expertise, and local cancer triage algorithms. Ablation can be performed in combination or in lieu of other cancer treatments. For surgically non-resectable liver metastases, a randomized trial has demonstrated the superiority of thermal ablation combined with chemotherapy compared to systemic chemotherapy alone in term of progression-free survival and overall survival (OS), with 5-, and 8-year OS of 43.1% and 35.9% in the combined arm vs. 30.3% and 8.9% in the chemotherapy alone arm. As ablation techniques and technology improve, the role of percutaneous thermal ablation may expand even into surgically resectable disease. Many of the prognostic factors for better OS after local treatment of lung metastases are the same for surgery and thermal ablation, including size and number of metastases, disease-free interval, complete resection/ablation, negative carcinoembryonic antigen, neoadjuvant chemotherapy, and controlled extra-pulmonary metastases. When matched for these factors, thermal ablation for lung and liver metastases appears to provide equivalent overall survival as surgery, in the range of 50% at 5 years. Thermal ablation has limitations that should be respected to optimize patient outcomes and minimize complications including targets that are well-visualized by image guidance, measure <3cm in diameter, and be located at least 3mm distance from prominent vasculature or major bronchi.
The routine incorporation of image-guided thermal ablation into the therapeutic armamentarium for the treatment of oligometastatic colorectal cancer can provide long survival and even cure.
Celotno besedilo
Dostopno za:
DOBA, IZUM, KILJ, NUK, PILJ, PNG, SAZU, SIK, UILJ, UKNU, UL, UM, UPUK
Purpose
To evaluate electromagnetic navigation system (ENS) for percutaneous fixation by internal cemented screw (FICS) under CT guidance.
Background
FICS is a recently developed modality that ...consists in inserting screws, under imaging guidance, into bone through a minimal skin incision. FICS recently showed good efficacy for the palliation or prevention of pathologic fractures of the pelvic ring and femoral neck.
Materials and methods
In this single-center retrospective study, we reviewed all consecutive cancer patients treated with percutaneous FICS under ENS-assisted CT guidance for the prevention or palliation of pelvic or femoral neck fractures. The primary endpoint was technical success. Secondary endpoints were screw placement accuracy (defined by proximal deviation
p
, distal deviation
d
, and angle deviation
θ
), radiation dose exposure, number of CT acquisitions, duration of procedures, and complications.
Results
Mean duration of FICS procedures was 111 ± 51 min. Mean post-procedure hospitalization length was 2.1 days. Technical success was achieved in 48 cases (96%) with a total of 76 screws inserted. Mean distance
p
, mean distance
d
, and mean angle
θ
were respectively 8.0 ± 4.5 mm, 7.5 ± 4.4 mm, and 5.4 ± 2°. Angle
θ
accuracy was higher for screws with a craniocaudal angulation of less than 20° (4.4° vs 6.4°,
p
= 0.02). The mean number of CT acquisitions during procedures was 6.4 ± 3.0. The mean dose length product was 1524 ± 953 mGy cm and the mean dose area product was 12 ± 8 Gy cm
2
. Five complications occurred in 4 patients.
Conclusion
CT guidance assisted by ENS is an effective approach for percutaneous FICS.
Key Points
• ENS-assisted CT enables screw insertion in the pelvic ring and femoral neck, with a wide range of trajectories, even when a significant craniocaudal angulation is required.
• ENS-assisted CT can be used as an alternative to CBCT guidance for percutaneous fixation by internal cemented screw.
• ENS-assisted CT provides high technical success rate with excellent placement accuracy.
PDF
