1.Laparoscopic total pancreatectomy with total mesopancreas dissection using counterclockwise technique and tail-first approach
Thanh Khiem NGUYEN ; Ham Hoi NGUYEN ; Tuan Hiep LUONG ; Thanh Tung LAI ; Van Duy LE ; Pisey CHANTHA
Annals of Hepato-Biliary-Pancreatic Surgery 2025;29(1):79-82
Laparoscopic total pancreatectomy (LTP) is technically challenging and infrequently documented in the literature. In this paper, we present a new approach for performing fully LTP, a pancreatic tail-first approach with a counterclockwise technique, to accomplish total mesopancreas dissection and standard lymphadenectomy en bloc. Firstly, the tail and body of the pancreas without the spleen were dissected retrogradely, starting from the lower border of the body of pancreas and then from left to right. After that, a counterclockwise dissection of the tail and body of the pancreas was performed. The splenic artery and vein were divided at the terminal end of the pancreatic tail. The spleen was preserved. The entire body and tail of the pancreas were then pulled to the right side. This maneuver facilitated the isolation and dissection of arteries in the retropancreatic region more easily via laparoscopy, including the splenic artery, gastroduodenal artery, and supporting superior mesenteric artery first-approach. It also enabled total mesopancreas dissection.The inferior pancreaticoduodenal artery was resected last during this phase. The remainder of the dissection was like that of a laparoscopic pancreaticoduodenectomy with total mesopancreas dissection, involving two laparoscopic manual anastomoses. The operative time was 490 minutes and the total blood loss was 100 mL. Pathology revealed a low-grade intraductal papillary mucinous neoplasm extending from the head to the tail of the pancreas.
2.Effectiveness of biportal endoscopic lumbar interbody fusion using the multi-layer bone grafting technique: a retrospective study from Vietnam
Tran Vu Hoang DUONG ; Pham Anh TUAN ; Huynh Van VU ; Chu Van LAM ; Le Tan LINH ; Phan DUY ; Wongthawat LIAWRUNGRUEANG
Asian Spine Journal 2025;19(2):228-241
Methods:
This study included 41 patients with single-level grades 1 or 2 LS from February 2023 to February 2024. Clinical outcomes were assessed using the Visual Analog Scale (VAS) for back and leg pain and the Oswestry Disability Index (ODI). Bridwell fusion grades were evaluated via lumbar spine computed tomography performed 6 months postoperatively.
Results:
Over a mean follow-up period of 10.6 months (range, 7–18 months), significant improvements were observed in VAS scores for low back pain (from 7.8±0.8 to 2.1±1.4) and leg pain (from 8.1±1.3 to 1.9±1.5) as well as ODI scores (from 50.4±15.4 to 14.8±10.5). The cohort consisted of patients with grades 1 (73.2%) and 2 LS (26.8%) at L4–L5 (58.6%), L5–S1 (34.1%), and L3–L4 (7.3%) levels. The mean operation time was 182.8±36.4 minutes, with a mean intraoperative blood loss of 190.5±81.3 mL and a mean hospital stay of 7.2±3.6 days. Successful fusion (Bridwell grades I/II) was achieved in 82.9% of the cases, with a 4.9% incidence of cage subsidence. Minor complications included durotomies in two patients (4.9%), whereas no major complications, such as nerve root injury, hardware-related issues, or postoperative infections, were reported.
Conclusions
The described BE-LIF technique, using HA bone grafts, which are an autologous bone from the preserved IAP, and a TLIF cage, is a viable, safe, and effective option for treating low-grade LS. This approach achieves favorable clinical outcomes and high fusion rates, which provides a cost-effective alternative to advanced surgical implants.
3.Laparoscopic total pancreatectomy with total mesopancreas dissection using counterclockwise technique and tail-first approach
Thanh Khiem NGUYEN ; Ham Hoi NGUYEN ; Tuan Hiep LUONG ; Thanh Tung LAI ; Van Duy LE ; Pisey CHANTHA
Annals of Hepato-Biliary-Pancreatic Surgery 2025;29(1):79-82
Laparoscopic total pancreatectomy (LTP) is technically challenging and infrequently documented in the literature. In this paper, we present a new approach for performing fully LTP, a pancreatic tail-first approach with a counterclockwise technique, to accomplish total mesopancreas dissection and standard lymphadenectomy en bloc. Firstly, the tail and body of the pancreas without the spleen were dissected retrogradely, starting from the lower border of the body of pancreas and then from left to right. After that, a counterclockwise dissection of the tail and body of the pancreas was performed. The splenic artery and vein were divided at the terminal end of the pancreatic tail. The spleen was preserved. The entire body and tail of the pancreas were then pulled to the right side. This maneuver facilitated the isolation and dissection of arteries in the retropancreatic region more easily via laparoscopy, including the splenic artery, gastroduodenal artery, and supporting superior mesenteric artery first-approach. It also enabled total mesopancreas dissection.The inferior pancreaticoduodenal artery was resected last during this phase. The remainder of the dissection was like that of a laparoscopic pancreaticoduodenectomy with total mesopancreas dissection, involving two laparoscopic manual anastomoses. The operative time was 490 minutes and the total blood loss was 100 mL. Pathology revealed a low-grade intraductal papillary mucinous neoplasm extending from the head to the tail of the pancreas.
4.Effectiveness of biportal endoscopic lumbar interbody fusion using the multi-layer bone grafting technique: a retrospective study from Vietnam
Tran Vu Hoang DUONG ; Pham Anh TUAN ; Huynh Van VU ; Chu Van LAM ; Le Tan LINH ; Phan DUY ; Wongthawat LIAWRUNGRUEANG
Asian Spine Journal 2025;19(2):228-241
Methods:
This study included 41 patients with single-level grades 1 or 2 LS from February 2023 to February 2024. Clinical outcomes were assessed using the Visual Analog Scale (VAS) for back and leg pain and the Oswestry Disability Index (ODI). Bridwell fusion grades were evaluated via lumbar spine computed tomography performed 6 months postoperatively.
Results:
Over a mean follow-up period of 10.6 months (range, 7–18 months), significant improvements were observed in VAS scores for low back pain (from 7.8±0.8 to 2.1±1.4) and leg pain (from 8.1±1.3 to 1.9±1.5) as well as ODI scores (from 50.4±15.4 to 14.8±10.5). The cohort consisted of patients with grades 1 (73.2%) and 2 LS (26.8%) at L4–L5 (58.6%), L5–S1 (34.1%), and L3–L4 (7.3%) levels. The mean operation time was 182.8±36.4 minutes, with a mean intraoperative blood loss of 190.5±81.3 mL and a mean hospital stay of 7.2±3.6 days. Successful fusion (Bridwell grades I/II) was achieved in 82.9% of the cases, with a 4.9% incidence of cage subsidence. Minor complications included durotomies in two patients (4.9%), whereas no major complications, such as nerve root injury, hardware-related issues, or postoperative infections, were reported.
Conclusions
The described BE-LIF technique, using HA bone grafts, which are an autologous bone from the preserved IAP, and a TLIF cage, is a viable, safe, and effective option for treating low-grade LS. This approach achieves favorable clinical outcomes and high fusion rates, which provides a cost-effective alternative to advanced surgical implants.
5.Laparoscopic total pancreatectomy with total mesopancreas dissection using counterclockwise technique and tail-first approach
Thanh Khiem NGUYEN ; Ham Hoi NGUYEN ; Tuan Hiep LUONG ; Thanh Tung LAI ; Van Duy LE ; Pisey CHANTHA
Annals of Hepato-Biliary-Pancreatic Surgery 2025;29(1):79-82
Laparoscopic total pancreatectomy (LTP) is technically challenging and infrequently documented in the literature. In this paper, we present a new approach for performing fully LTP, a pancreatic tail-first approach with a counterclockwise technique, to accomplish total mesopancreas dissection and standard lymphadenectomy en bloc. Firstly, the tail and body of the pancreas without the spleen were dissected retrogradely, starting from the lower border of the body of pancreas and then from left to right. After that, a counterclockwise dissection of the tail and body of the pancreas was performed. The splenic artery and vein were divided at the terminal end of the pancreatic tail. The spleen was preserved. The entire body and tail of the pancreas were then pulled to the right side. This maneuver facilitated the isolation and dissection of arteries in the retropancreatic region more easily via laparoscopy, including the splenic artery, gastroduodenal artery, and supporting superior mesenteric artery first-approach. It also enabled total mesopancreas dissection.The inferior pancreaticoduodenal artery was resected last during this phase. The remainder of the dissection was like that of a laparoscopic pancreaticoduodenectomy with total mesopancreas dissection, involving two laparoscopic manual anastomoses. The operative time was 490 minutes and the total blood loss was 100 mL. Pathology revealed a low-grade intraductal papillary mucinous neoplasm extending from the head to the tail of the pancreas.
6.Effectiveness of biportal endoscopic lumbar interbody fusion using the multi-layer bone grafting technique: a retrospective study from Vietnam
Tran Vu Hoang DUONG ; Pham Anh TUAN ; Huynh Van VU ; Chu Van LAM ; Le Tan LINH ; Phan DUY ; Wongthawat LIAWRUNGRUEANG
Asian Spine Journal 2025;19(2):228-241
Methods:
This study included 41 patients with single-level grades 1 or 2 LS from February 2023 to February 2024. Clinical outcomes were assessed using the Visual Analog Scale (VAS) for back and leg pain and the Oswestry Disability Index (ODI). Bridwell fusion grades were evaluated via lumbar spine computed tomography performed 6 months postoperatively.
Results:
Over a mean follow-up period of 10.6 months (range, 7–18 months), significant improvements were observed in VAS scores for low back pain (from 7.8±0.8 to 2.1±1.4) and leg pain (from 8.1±1.3 to 1.9±1.5) as well as ODI scores (from 50.4±15.4 to 14.8±10.5). The cohort consisted of patients with grades 1 (73.2%) and 2 LS (26.8%) at L4–L5 (58.6%), L5–S1 (34.1%), and L3–L4 (7.3%) levels. The mean operation time was 182.8±36.4 minutes, with a mean intraoperative blood loss of 190.5±81.3 mL and a mean hospital stay of 7.2±3.6 days. Successful fusion (Bridwell grades I/II) was achieved in 82.9% of the cases, with a 4.9% incidence of cage subsidence. Minor complications included durotomies in two patients (4.9%), whereas no major complications, such as nerve root injury, hardware-related issues, or postoperative infections, were reported.
Conclusions
The described BE-LIF technique, using HA bone grafts, which are an autologous bone from the preserved IAP, and a TLIF cage, is a viable, safe, and effective option for treating low-grade LS. This approach achieves favorable clinical outcomes and high fusion rates, which provides a cost-effective alternative to advanced surgical implants.
7.Biportal Endoscopic Spine Surgery for Symptomatic Postoperative Discal Pseudocyst Following Percutaneous Endoscopic Interlaminar Discectomy: A Case Report and Literature Review
Tran Vu Hoang DUONG ; Pham Anh TUAN ; Huynh Van VU ; Chu Van LAM ; Le Tan LINH
Journal of Minimally Invasive Spine Surgery and Technique 2025;10(1):152-161
Postoperative discal pseudocyst (PDP) is a rare complication after surgery for lumbar disc herniation. The literature on this condition is sparse, with most studies being limited to case reports. Various hypotheses regarding the pathogenesis of PDP have been proposed; however, the exact mechanisms remain unclear and are not well described in the current literature. We present a case of PDP following percutaneous endoscopic interlaminar discectomy (PEID), which was revised through biportal endoscopic spinal surgery. Additionally, we conducted a systematic review of the literature, aiming to provide a more detailed description of the proposed mechanisms underlying PDP, particularly after PEID, and to summarize current trends in the treatment of this complication.
8.Comparative Clinical and Radiological Outcomes of Banana-Shaped Versus Straight Cages in Biportal Endoscopic Transforaminal Lumbar Interbody Fusion: A Retrospective Cohort Study
Nguyen Ngoc THOI ; Nguyen Le Hoang TUAN ; Le Tuong VIEN ; Nguyen Thanh NHAN ; Hoang Nguyen Anh TUAN ; Nguyen Van THANH ; Tran Nguyen PHUONG ; Bui Hong Thien KHANH
Journal of Minimally Invasive Spine Surgery and Technique 2025;10(2):172-182
Objective:
This study aims to evaluate and compare the clinical and radiological outcomes of biportal endoscopic transforaminal lumbar interbody fusion (BE-TLIF) using banana-shaped versus straight interbody cages. BE-TLIF has emerged as a minimally invasive technique for treating lumbar spondylolisthesis. Banana-shaped and straight cages are the most commonly used cage types in BE-TLIF; however, their relative clinical and radiological outcomes remain unclear.
Methods:
This retrospective cohort study included 34 patients undergoing single-level BE-TLIF from January 2023 to May 2024. Seventeen patients received banana-shaped cages (group A) and 17 received straight cages (group B). Radiological assessments included disc height (DH), segmental lordosis angle (SLA), lumbar lordosis angle, cage position, and subsidence. Clinical outcomes were evaluated using the visual analogue scale (VAS) for back and leg pain and the Oswestry Disability Index (ODI). Fusion status was evaluated at 12 months postoperatively using computed tomography according to the modified Bridwell grading system.
Results:
Both groups demonstrated significant postoperative improvements in VAS and ODI scores, with no statistically significant differences between the groups. Radiological outcomes, including restoration of DH and SLA, were slightly better in the banana-shaped cage group, but this difference did not reach statistical significance. Straight cages were more often placed anteriorly, whereas banana-shaped cages tended to occupy the midlateral position. Fusion rates were comparable (100% vs. 94.1%, p>0.05), and subsidence occurred in 23.5% of cases in both groups.
Conclusion
Despite differences in cage positioning, banana-shaped and straight cages yielded comparable clinical and radiological outcomes in BE-TLIF. Either cage type can be effectively utilized in BE-TLIF, providing flexibility in surgical planning, particularly in resource-limited settings.
9.Alkaloids with Acetylcholinesterase Inhibitory Activities from Crinum latifolium L.
Vu Thi TRANG ; Pham Van CONG ; Nguyen Van DAN ; Nguyen Thi Thu HIEN ; Do Thanh TUAN ; Le Tuan ANH ; Hoang Dac THANG ; Ngo Viet DUC ; Hoang Le Tuan ANH
Natural Product Sciences 2024;30(4):304-308
A new crinane-type alkaloid, 6-epihydroxypowelline (1), together with six known alkaloids, lycorine (2), 2-O-acetyllycorine (3), deacetylbowdensine (4), 1-epideacetylbowdensine (5), 8-demethyl-3-oxomaritidine (6), and (-)-marithamine (7) were isolated from the whole parts of the Crinum latifolium L. in Vietnam. The structure identification of all compounds was determined by 1D, 2D-NMR as well as HR-ESI-MS spectroscopic techniques. The absolute configuration of these compounds was established by the ECD data. In addition, in vitro inhibition of acetylcholinesterase (AChE) activities was assessed for all isolated alkaloids. All alkaloids had AChE inhibitory effects, with IC50 values ranging from 32.65 ± 2.72 to 212.76 ± 8.30 µM and compound 3 displayed the strongest inhibition of AChE, with IC50 values of 32.65 ± 2.72 µM (in comparison to the reference drug, galanthamine, which had an IC50 of 2.40 ± 0.45 µM).
10.Alkaloids with Acetylcholinesterase Inhibitory Activities from Crinum latifolium L.
Vu Thi TRANG ; Pham Van CONG ; Nguyen Van DAN ; Nguyen Thi Thu HIEN ; Do Thanh TUAN ; Le Tuan ANH ; Hoang Dac THANG ; Ngo Viet DUC ; Hoang Le Tuan ANH
Natural Product Sciences 2024;30(4):304-308
A new crinane-type alkaloid, 6-epihydroxypowelline (1), together with six known alkaloids, lycorine (2), 2-O-acetyllycorine (3), deacetylbowdensine (4), 1-epideacetylbowdensine (5), 8-demethyl-3-oxomaritidine (6), and (-)-marithamine (7) were isolated from the whole parts of the Crinum latifolium L. in Vietnam. The structure identification of all compounds was determined by 1D, 2D-NMR as well as HR-ESI-MS spectroscopic techniques. The absolute configuration of these compounds was established by the ECD data. In addition, in vitro inhibition of acetylcholinesterase (AChE) activities was assessed for all isolated alkaloids. All alkaloids had AChE inhibitory effects, with IC50 values ranging from 32.65 ± 2.72 to 212.76 ± 8.30 µM and compound 3 displayed the strongest inhibition of AChE, with IC50 values of 32.65 ± 2.72 µM (in comparison to the reference drug, galanthamine, which had an IC50 of 2.40 ± 0.45 µM).

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