scholarly journals Endoscopic Radiofrequency Ablation of the Sacroiliac Joint Complex in the Treatment of Chronic Low Back Pain: A Preliminary Study of Feasibility and Efficacy of a Novel Technique

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Won-Suh Choi ◽  
Jin-Sung Kim ◽  
Kyeong-Sik Ryu ◽  
Jung-Woo Hur ◽  
Ji-Hoon Seong ◽  
...  
Keyword(s):  
Radiofrequency Ablation ◽  
Sacroiliac Joint ◽  
Invasive Technique ◽  
Bipolar Radiofrequency ◽  
Endoscopic Radiofrequency Ablation ◽  
The Mean ◽  
Preliminary Study ◽  
Lateral Branches ◽  
Duration Of Operation

Background. Radiofrequency ablation (RFA) is a less invasive technique for treatment of sacroiliac joint (SIJ) pain. Objective. To evaluate the feasibility and efficacy of endoscope-guided RFA for the treatment of CLBP from the SIJ complex. Methods. In this retrospective study, the medical records of 17 patients who underwent endoscope-guided RFA of the SIJ complex were reviewed. A bipolar radiofrequency probe was used to lesion the posterior capsule of the SIJ as well as the lateral branches of S1, S2, S3, and the L5 dorsal ramus in multiple locations. We visualized the ablation area using endoscope. We assessed visual analogue scale (VAS) and the Oswestry disability index (ODI) preoperatively, immediately postop, and at 1-, 3-, and 6-month postop outpatient clinic visits. Patient satisfaction of the procedure was assessed in percentages. Results. The mean duration of operation was 20 to 50 minutes. The mean VAS and the ODI scores decreased significantly immediately after the procedure and were kept significantly lower than baseline levels during the follow-up periods. No complications occurred perioperatively and during the follow-up periods. 88.6% of patients were satisfied with the procedure. Conclusions. Our preliminary results suggest that endoscope-guided RFA may be alternative option to treat CLBP secondary to SIJ complex.

scholarly journals Open Surgical Excision Versus Endoscopic Radiofrequency Ablation for Piriform Fossa Fistula

2020 ◽  
pp. 014556131989894
Author(s):  
Shilei Pu ◽  
Wanpeng Li ◽  
Hongming Xu ◽  
Liming Zhao ◽  
Xiaojun Liu ◽  
...  
Keyword(s):  
Retrospective Study ◽  
Radiofrequency Ablation ◽  
Minimally Invasive ◽  
Surgical Excision ◽  
Neck Surgery ◽  
Curative Effect ◽  
Advantages And Disadvantages ◽  
Endoscopic Radiofrequency Ablation ◽  
The Mean

Objectives: The purpose of this study is to explore the curative effect of open surgical excision and endoscopic radiofrequency ablation (RA) in the treatment of piriform fossa fistula (PSF). Methods: Retrospective study of 80 cases of PSF in the Department of Otolaryngology-Head and Neck Surgery, Shanghai Children’s Hospital, from June 2009 to June 2017. Results: In this series, there were 43 males and 37 females, and the mean age was 5.2 years (17 days to 12 years). Surgical excision was performed for 62 patients. Radiofrequency ablation was performed for 18 patients. Six cases of postoperative temporary hoarseness occurred, and the hoarseness rates were not significantly different between the excision and RA groups (6.4% vs 11.1%, respectively, P = .88). Two cases of temporary neck abscess occurred in the RA group. After the mean follow-up period of 3.1 years (1-8 years), no recurrence was found between the excision and RA groups. Conclusions: The curative effect of excision and RA for PSF is not significantly different; each of the 2 methods has its advantages and disadvantages. However, RA for PSF has the merit of being minimally invasive, easy to operate, and safe; this procedure seems to be more suitable in the clinic.

scholarly journals Efficacy and safety of radiofrequency ablation for benign thyroid nodules in patients with previous thyroid lobectomy

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Lin Yan ◽  
Mingbo Zhang ◽  
Fang Xie ◽  
Jun Ma ◽  
Jing Xiao ◽  
...  
Keyword(s):  
Radiofrequency Ablation ◽  
Symptom Score ◽  
Thyroid Function ◽  
Thyroid Nodules ◽  
Efficacy And Safety ◽  
Thyroid Lobectomy ◽  
The Mean ◽  
Benign Thyroid Nodules ◽  
Benign Thyroid

Abstract Background Radiofrequency ablation (RFA) is recommended for the treatment of benign thyroid nodules. However, data on the clinical role of RFA for benign thyroid nodules in patients with history of thyroid lobectomy are insufficient. The purpose of this study was to evaluate the efficacy and safety of radiofrequency ablation (RFA) for benign thyroid nodules in patients who had previously undergoing thyroid lobectomy. Methods From May 2015 to October 2018, a total of 20 patients (19 females, 1 male, mean age 49.50 ± 14.26 years, range 22–74 years) with 20 benign thyroid nodules (mean volume 15.04 ± 21.17 ml, range 0.40–69.67 ml) who had undergone previous thyroid lobectomy were included in this retrospective study. Patients were followed up at 3, 6, 12 months after RFA and every 12 months thereafter by ultrasound, clinical evaluation and thyroid function. Volume, volume reduction rate (VRR), symptom score and cosmetic score were evaluated. Results During the mean follow-up time of 21.24 ± 16.41 months, the mean nodule volume decreased significantly from 15.04 ± 21.17 ml to 1.29 ± 1.17 ml (P = 0.018) with a mean VRR of 85.41 ± 12.17%. Therapeutic success was achieved in a single session for all thyroid nodules. The symptom score (P = 0.001) and cosmetic score (P = 0.001) were both significantly reduced at the last follow-up. The levels of free triiodothyronine (fT3), free thyroxine (fT4) and thyroid stimulating hormone were not significantly different at the last follow-up from those prior to treatment (all P > 0.05). No life-threatening complications or sequelae occurred after RFA. Conclusions As a minimally invasive modality, RFA was a safe, effective, and thyroid function-preserving option for patients with symptomatic benign thyroid nodules after a previous lobectomy.

scholarly journals Feasibility of balloon-based endobiliary radiofrequency ablation under cholangioscopy guidance in a swine model

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Tadahisa Inoue ◽  
Hiromu Kutsumi ◽  
Mayu Ibusuki ◽  
Masashi Yoneda
Keyword(s):  
Radiofrequency Ablation ◽  
Adverse Events ◽  
Swine Model ◽  
Biliary Strictures ◽  
Tissue Samples ◽  
Ablation Area ◽  
Mucosal Changes ◽  
The Mean ◽  
Preliminary Study

AbstractAlthough endobiliary radiofrequency ablation (RFA) has demonstrated considerable potential for the treatment of biliary strictures, conventional catheter RFA has several limitations. This study aimed to evaluate the feasibility of a novel cholangioscopy (CS)-guided balloon-based RFA procedure in vivo using a swine model. CS-guided balloon-RFA was performed under endoscopic retrograde cholangiography guidance at target temperatures of 60 ℃ or 70 ℃, which were maintained for 60 s. We evaluated the technical feasibility, adverse events, and histological effects associated with the procedure. Twelve sites were ablated in seven miniature pigs. The CS-guided balloon-RFA procedure was technically successful in all cases without any hindrance. Mucosal changes could be detected during RFA, and the ablation area was identified on CS. Necropsy was performed in four pigs on the same day as the procedure: the tissue samples showed coagulative necrosis, and the entire internal circumference of the bile duct was uniformly ablated. The mean lengths of the ablation area in the samples ablated at 60 °C and 70 °C were 20.64 and 22.18 mm, respectively, while the mean depths were 3.46 and 5.07 mm, respectively. The other three pigs were reared and euthanized and autopsied 35 days after the procedure. The site to be ablated had replaced the granulation tissue and fibrotic changes. No adverse events were observed in any case. CS-guided balloon-RFA appears to be a promising option for treating biliary strictures. This preliminary study could pave the way for the evaluation of this procedure in future human clinical trials.

scholarly journals Sialendoscopy With Intraductal Steroid Irrigation in Patients With Sialadenitis Without Sialoliths

2019 ◽  
Vol 98 (5) ◽  
pp. 291-294 ◽  
Author(s):  
Saudamini J. Lele ◽  
Mickie Hamiter ◽  
Torrey Louise Fourrier ◽  
Cherie-Ann Nathan
Keyword(s):  
Treatment Option ◽  
Case Series ◽  
Complete Response ◽  
Definitive Treatment ◽  
Invasive Technique ◽  
Effective Treatment Option ◽  
Patient Reported ◽  
History Of ◽  
The Mean

Sialendoscopy has emerged as a safe, effective and minimally invasive technique for management of obstructive and inflammatory salivary gland disease. The aim of our study was to analyze outcomes of sialendoscopy and steroid irrigation in patients with sialadenitis without sialoliths. We performed a retrospective analysis of patients who underwent interventional sialendoscopy with steroid irrigation from 2013 to 2016, for the treatment of sialadenitis without sialolithiasis. Twenty-two patients underwent interventional sialendoscopy with ductal dilation and steroid irrigation for the treatment of sialadenitis without any evidence of sialolithiasis. Conservative measures had failed in all. Eleven patients had symptoms arising from the parotid gland, 4 patients had symptoms arising from the submandibular gland, while 6 patients had symptoms in both parotid and submandibular glands. One patient complained of only xerostomia without glandular symptoms. The mean age of the study group which included 1 male and 21 females was 44.6 years (range: 3-86 years). Four patients had autoimmune disease, while 7 patients had a history of radioactive iodine therapy. No identifiable cause for sialadenitis was found in the remaining 11 patients. The mean follow-up period was 378.9 days (range: 16-1143 days). All patients underwent sialendoscopy with ductal dilation and steroid irrigation. Twelve patients showed a complete response and 9 patients had a partial response, while 1 patient reported no response. Only 3 patients required repeat sialendoscopy. The combination of sialendoscopy with ductal dilation and steroid irrigation is a safe and effective treatment option for patients with sialadenitis without sialoliths refractory to conservative measures. Prospective studies with a larger case series are needed to establish its role as a definitive treatment option.

scholarly journals The Anatomy of the Lateral Branches of the Sacral Dorsal Rami: Implications for Radiofrequency Ablation

2014 ◽  
Vol 5;17 (5;9) ◽  
pp. 459-464
Author(s):  
Joseph Fortin
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Radiofrequency Ablation ◽  
Sacroiliac Joint ◽  
Low Back ◽  
Sacral Foramina ◽  
Dorsal Rami ◽  
Lateral Branches ◽  
The Right ◽  
Segmental Innervation

Background: The sacroiliac joint (SIJ) is a major source of pain in patients with chronic low back pain. Radiofrequency ablation (RFA) of the lateral branches of the dorsal sacral rami that supply the joint is a treatment option gaining considerable attention. However, the position of the lateral branches (commonly targeted with RFA) is variable and the segmental innervation to the SIJ is not well understood. Objectives: Our objective was to clarify the lateral branches’ innervation of the SIJ and their specific locations in relation to the dorsal sacral foramina, which are the standard RFA landmark. Methods: Dissections and photography of the L5 to S4 sacral dorsal rami were performed on 12 hemipelves from 9 donated cadaveric specimens. Results: There was a broad range of exit points from the dorsal sacral foramina: ranging from 12:00 – 6:00 position on the right side and 6:00 – 12:00 on the left positions. Nine of 12 of the hemipelves showed anastomosing branches from L5 dorsal rami to the S1 lateral plexus. Limitations: The limitations of this study include the use of a posterior approach to the pelvic dissection only, thus discounting any possible nerve contribution to the anterior aspect of the SIJ, as well as the possible destruction of some L5 or sacral dorsal rami branches with the removal of the ligaments and muscles of the low back. Conclusion: Widespread variability of lateral branch exit points from the dorsal sacral foramen and possible contributions from L5 dorsal rami and superior gluteal nerve were disclosed by the current study. Hence, SIJ RFA treatment approaches need to incorporate techniques which address the diverse SIJ innervation. Key words: Sacroiliac joint pain, radiofrequency ablation, dorsal sacral rami, low back pain

Lessons from pathological analysis of recurrent early esophageal squamous cell neoplasia after complete endoscopic radiofrequency ablation

Endoscopy ◽  
2018 ◽  
Vol 50 (08) ◽  
pp. 743-750 ◽  
Author(s):  
Wen-Lun Wang ◽  
I-Wei Chang ◽  
Chien-Chuan Chen ◽  
Chi-Yang Chang ◽  
Cheng-Hao Tseng ◽  
...  
Keyword(s):  
Radiofrequency Ablation ◽  
Local Recurrence ◽  
Endoscopic Resection ◽  
Squamous Cell ◽  
Complete Response ◽  
Primary Treatment ◽  
Long Term Follow Up ◽  
Endoscopic Radiofrequency Ablation ◽  
Lost To Follow Up

Abstract Background Endoscopic radiofrequency ablation (RFA) is a treatment option for early esophageal squamous cell neoplasia (ESCN); however, long-term follow-up studies are lacking. The risks of local recurrence and “buried cancer” are also uncertain. Methods Patients with flat-type ESCN who were treated with balloon-type ± focal-type RFA were consecutively enrolled. Follow-up endoscopy was performed at 1, 3, and 6 months, and then every 6 months thereafter. Endoscopic resection was performed for persistent and recurrent ESCN, and the histopathology of resected specimens was assessed. Results A total of 35 patients were treated with RFA, of whom 30 (86 %) achieved a complete response, three were lost to follow-up, and five (14 %) developed post-RFA stenosis. Two patients had persistent ESCN and received further endoscopic resection, in which the resected specimens all revealed superficial submucosal invasive cancer. Six of the 30 patients with successful RFA (20 %) developed a total of seven episodes of local recurrence (mean size 1.4 cm) during the follow-up period (mean 40.1 months), all of which were successfully resected endoscopically without adverse events. Histological analysis of the resected specimens revealed that six (86 %) had esophageal glandular ductal involvement, all of which extended deeper than the muscularis mucosae layer. Immunohistochemistry staining for P53 and Ki67 suggested a clonal relationship between the ductal involvement and epithelial cells. None of the tumors extended out of the ductal structure; no cases of cancer buried beneath the normal neosquamous epithelium were found. Conclusions Because ductal involvement is not uncommon and may be related to recurrence, the use of RFA should be conservative and may not be the preferred primary treatment for early ESCN.

Lateral branch blocks

2021 ◽  
pp. 75-82
Author(s):  
Benjamin K. Homra ◽  
Yashar Eshraghi ◽  
Maged Guirguis
Keyword(s):  
Radiofrequency Ablation ◽  
Local Anesthetic ◽  
Sacroiliac Joint ◽  
Joint Pain ◽  
Lateral Branch ◽  
Ultrasound Technique ◽  
Posterior Aspect ◽  
Sacroiliac Joint Pain ◽  
Lateral Branches

The posterior sacral network is a complex meshwork of lateral branches of the dorsal sacral rami that innervate the posterior aspect of the sacroiliac joint. Pain arising from this joint can be diagnostically targeted using either a fluoroscopic or ultrasound technique to determine if the patient would benefit from radiofrequency ablation of the lateral branches. Injecting local anesthetic near the dorsal foramina using these techniques will temporarily block the transmission of pain by the lateral branches from the sacroiliac joint. This chapter covers the anatomy of the posterior sacral network, discusses the details of the two techniques for lateral branch blocks and evidence for their utility, provides information about the risks and contraindications associated with the techniques, and concludes by discussing the implications of the procedure.

scholarly journals Reproducibility of Ablated Volume Measurement Is Higher with Contrast-Enhanced Ultrasound than with B-Mode Ultrasound after Benign Thyroid Nodule Radiofrequency Ablation—A Preliminary Study

2020 ◽  
Vol 9 (5) ◽  
pp. 1504 ◽  
Author(s):  
Simone Schiaffino ◽  
Francesca Serpi ◽  
Duccio Rossi ◽  
Valerio Ferrara ◽  
Ciriaco Buonomenna ◽  
...  
Keyword(s):  
Radiofrequency Ablation ◽  
Thyroid Nodules ◽  
Observer Agreement ◽  
Contrast Enhanced Ultrasound ◽  
Limits Of Agreement ◽  
Contrast Enhanced ◽  
The Mean ◽  
Preliminary Study ◽  
Benign Thyroid Nodules ◽  
Benign Thyroid

The reproducibility of contrast-enhanced ultrasound (CEUS) and standard B-mode ultrasound in the assessment of radiofrequency-ablated volume of benign thyroid nodules was compared. A preliminary study was conducted on consecutive patients who underwent radiofrequency ablation (RFA) of benign thyroid nodules between 2014 and 2016, with available CEUS and B-mode post-ablation checks. CEUS and B-mode images were retrospectively evaluated by two radiologists to assess inter- and intra-observer agreement in the assessment of ablated volume (Bland–Altman test). For CEUS, the mean inter-observer difference (95% limits of agreement) was 0.219 mL (-0.372–0.809 mL); for B-mode, the mean difference was 0.880 mL (-1.655–3.414 mL). Reproducibility was significantly higher for CEUS (85%) than for B-mode (27%). Mean intra-observer differences (95% limits of agreement) were 0.013 mL (0.803–4.097 mL) for Reader 1 and 0.031 mL (0.763–3.931 mL) for Reader 2 using CEUS, while they were 0.567 mL (-2.180–4.317 mL, Reader 1) and 0.759 mL (-2.584–4.290 mL, Reader 2) for B-mode. Intra-observer reproducibility was significantly higher for CEUS (96% and 95%, for the two readers) than for B-mode (21% and 23%). In conclusion, CEUS had higher reproducibility and inter- and intra-observer agreement compared to conventional B-mode in the assessment of radiofrequency-ablated volume of benign thyroid nodules.

scholarly journals Endoscopic Transforaminal Thoracic Foraminotomy and Discectomy for the Treatment of Thoracic Disc Herniation

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Hong-Fei Nie ◽  
Kai-Xuan Liu
Keyword(s):  
Disc Herniation ◽  
Surgical Approaches ◽  
Invasive Technique ◽  
Complication Rates ◽  
Thoracic Disc Herniation ◽  
Blood Patch ◽  
The Mean ◽  
Thoracic Disc ◽  
Rib Head

Thoracic disc herniation is a relatively rare yet challenging-to-diagnose condition. Currently there is no universally accepted optimal surgical treatment for symptomatic thoracic disc herniation. Previously reported surgical approaches are often associated with high complication rates. Here we describe our minimally invasive technique of removing thoracic disc herniation, and report the primary results of a series of cases. Between January 2009 and March 2012, 13 patients with symptomatic thoracic disc herniation were treated with endoscopic thoracic foraminotomy and discectomy under local anesthesia. A bone shaver was used to undercut the facet and rib head for foraminotomy. Discectomy was achieved by using grasper, radiofrequency, and the Holmium-YAG laser. We analyzed the clinical outcomes of the patients using the visual analogue scale (VAS), MacNab classification, and Oswestry disability index (ODI). At the final follow up (mean: 17 months; range: 6–41 months), patient self-reported satisfactory rate was 76.9%. The mean VAS for mid back pain was improved from 9.1 to 4.2, and the mean ODI was improved from 61.0 to 43.8. One complication of postoperative spinal headache occurred during the surgery and the patient was successfully treated with epidural blood patch. No other complications were observed or reported during and after the surgery.

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