Retrospective Study Research Articles

Long-term Outcomes of Surgical Treatment for Pancreatic Neuroendocrine Neoplasm with Synchronous Hepatic Metastasis: A Multicenter Retrospective Cohort Study

Abstract Objectives: To evaluate surgical impact on the overall survival (OS) of pancreatic neuroendocrine neoplasm (pNEN) with synchronous hepatic metastases (sHM). Methods: A total of 163 pNEN-sHM patients were recruited from 3 institutions in China, who were categorized into 3 groups: no resection (NR), resection of the primary lesion (PR) and resection of both primary and hepatic lesions (PHR). Cox regression was employed to evaluate surgical impact on the OS. Results: In the overall cohort analysis, PHR demonstrated a significant protective effect on OS (HR 0.302, 95% CI: 0.127–0.721, p = 0.007). Nevertheless, subgroup analysis revealed PHR conferred a survival advantage in patients with pancreatic neuroendocrine tumor (pNET) located on the pancreatic body/tail (bt-pNET-sHM) (HR 0.287, 95% CI: 0.087–0.946, p = 0.040), whereas surgical treatment did not significantly impact survival in the subgroups of pancreatic neuroendocrine carcinoma (pNEC)-sHM or pancreatic head/neck pNET-sHM (hn-pNET-sHM). Conclusions: In this study, the survival benefit of surgery was only observed in the bt-pNET-sHM subgroup. Considering the multifactorial nature of decision-making, surgical intervention for pNEN-sHM management should be approached with a careful and comprehensive assessment, to prevent excessive surgery strategies.

Association Between X/Twitter and Prescribing Behavior During the COVID-19 Pandemic: Retrospective Ecological Study

Background Social media has become a vital tool for health care providers to quickly share information. However, its lack of content curation and expertise poses risks of misinformation and premature dissemination of unvalidated data, potentially leading to widespread harmful effects due to the rapid and large-scale spread of incorrect information. Objective We aim to determine whether social media had an undue association with the prescribing behavior of hydroxychloroquine, using the COVID-19 pandemic as the setting. Methods In this retrospective study, we gathered the use of hydroxychloroquine in 48 hospitals in the United States between January and December 2020. Social media data from X/Twitter was collected using Brandwatch, a commercial aggregator with access to X/Twitter’s data, and focused on mentions of “hydroxychloroquine” and “Plaquenil.” Tweets were categorized by sentiment (positive, negative, or neutral) using Brandwatch’s sentiment analysis tool, with results classified by date. Hydroxychloroquine prescription data from the National COVID Cohort Collaborative for 2020 was used. Granger causality and linear regression models were used to examine relationships between X/Twitter mentions and prescription trends, using optimum time lags determined via vector auto-regression. Results A total of 581,748 patients with confirmed COVID-19 were identified. The median daily number of positive COVID-19 cases was 1318.5 (IQR 1005.75-1940.3). Before the first confirmed COVID-19 case, hydroxychloroquine was prescribed at a median rate of 559 (IQR 339.25-728.25) new prescriptions per day. A day-of-the-week effect was noted in both prescriptions and case counts. During the pandemic in 2020, hydroxychloroquine prescriptions increased significantly, with a median of 685.5 (IQR 459.75-897.25) per day, representing a 22.6% rise from baseline. The peak occurred on April 2, 2020, with 3411 prescriptions, a 397.6% increase. Hydroxychloroquine mentions on X/Twitter peaked at 254,770 per day on April 5, 2020, compared to a baseline of 9124 mentions per day before January 21, 2020. During this study’s period, 3,823,595 total tweets were recorded, with 10.09% (n=386,115) positive, 37.87% (n=1,448,030) negative, and 52.03% (n=1,989,450) neutral sentiments. A 1-day lag was identified as the optimal time for causal association between tweets and hydroxychloroquine prescriptions. Univariate analysis showed significant associations across all sentiment types, with the largest impact from positive tweets. Multivariate analysis revealed only neutral and negative tweets significantly affected next-day prescription rates. Conclusions During the first year of the COVID-19 pandemic, there was a significant association between X/Twitter mentions and the number of prescriptions of hydroxychloroquine. This study showed that X/Twitter has an association with the prescribing behavior of hydroxychloroquine. Clinicians need to be vigilant about their potential unconscious exposure to social media as a source of medical knowledge, and health systems and organizations need to be more diligent in identifying expertise, source, and quality of evidence when shared on social media platforms.

A Pharmacist Medication Titration Program for Patients with Cardiac Sarcoidosis and Systolic Heart Failure: A Retrospective Cohort Study

Background A multidisciplinary approach improves guideline‐directed medical therapy (GDMT) in systolic heart failure (HF), but its efficacy in patients with HF due to cardiac sarcoidosis (CS) is unreported. Methods and Results In a retrospective cohort study, we reviewed 848 patients from our institutional CS clinics, identifying those with a CS diagnosis, HF (LVEF < 50%) at index evaluation, and echocardiograms within 90 days and 11‐36 months. Patients were stratified by participation in a pharmacist‐led medication therapy management (MTM) program for GDMT optimization (MTM vs non‐MTM [NMTM]) without randomization. Demographics, LVEF, GDMT (quantified by Kansas City Medical Optimization [KCMO] score), and immunosuppressive therapy were assessed. Primary outcomes included changes in KCMO score, LVEF, and cardiovascular event‐free survival (unplanned HF hospitalization, LVAD/heart transplant, or death). The final cohort included 111 patients (median age 57 years, 34% female, 64% NYHA Class I‐II); 43 (39%) were MTM and 68 (61%) were NMTM. Mean KCMO score was similar at index evaluation (MTM: 23.2; NMTM: 29.6, p=0.83). At follow‐up (median 16 months), the KCMO score increased significantly in both groups (MTM: 23.2 to 74.8, p<0.001; NMTM: 29.6 to 58.7, p<0.001), but was higher in MTM (p=0.001). Mean LVEF trended towards higher values in MTM (44.4% vs 40.0%, p=0.05). The primary clinical outcome occurred in 1 MTM (2.3%) and 16 NMTM (23.5%) patients, with higher risk in NMTM (HR 11.97 [95%CI 1.58 ‐ 90.54], p=0.002). Conclusions In this retrospective cohort study, a pharmacist‐led MTM program was associated with favorable GDMT optimization and lower risk of adverse cardiovascular outcomes in CS patients with HF.

Nodular vasculitis – Retrospective study of an uncommon disease in a non-tuberculosis endemic country with focus on treatment modalities and efficacy

Introduction Nodular vasculitis (NV) is a rare form of panniculitis primarily affecting middle-aged females, presenting as painful, sometimes ulcerated nodules on the dorsal lower legs. Erythema induratum Bazin (EIB) is a form of NV and is considered a manifestation of cutaneous tuberculin hypersensitivity. This retrospective study aims to analyze demographics, clinicopathological findings, laboratory results, and treatment outcomes of NV in a non-TB endemic country. Methods: Data of NV patients were extracted from the electronic hospital database of the University Hospital Zurich. Patients were included only if histopathologically confirmed diagnosis of NV and sufficient information on demographics, treatment, and follow-up was available. Results: We conducted a 20-year retrospective study , including 62 patients with NV. The most common site of involvement was the lower extremities. Disease duration varyied from several months to over 20 years. Histopathological examination revealed lobular panniculitis, with or without vasculitis, and granuloma formation. Tuberculosis association was assessed through the QuantiFERON test and Mycobacteria PCR, showing positive results in 22 or 37 (59%) tested cases and in 2 out of 27 cases (7.4%), respectively. . Comorbidities were found in over half of the patients. Treatment modalities included topical corticosteroids, antitubercular therapy, systemic steroids, and potassium iodide. Almost 50% of all patients experienced relapses despite treatment. Conclusion: Topical steroids, antitubercular therapy, systemic steroids, and potassium iodide showed similar response rates. Tuberculostatic therapy upon detecting latent TB is recommended. Considering the high recurrence rate and potential side effects of systemic therapies, we recommend first-line treatment with potent topical steroids and compression stockings.

Mini‐consolidations or intermediate‐dose cytarabine for the post‐remission therapy of AML patients over 60. A retrospective study from the DATAML and SAL registries

AbstractAccording to current recommendations, older AML patients in first complete remission (CR) after induction chemotherapy should receive consolidation with intermediate‐dose cytarabine (IDAC). However, no study has demonstrated the superiority of IDAC over other regimen. In this retrospective study, we compared the efficacy of mini‐consolidations (idarubicin 8 mg/m2 day 1, cytarabine 50 mg/m2/12 h, day 1–5) and IDAC. Inclusion criteria were newly diagnosed AML, age > 60 years, first CR after induction and at least 1 cycle of consolidation. Of the 796 included patients, 322 patients received mini‐consolidations and 474 patients received IDAC. Mini‐consolidation patients were older, and more often, they had de novo AML and unfavorable risk. The rate of allogeneic transplantation was higher in the IDAC group. The median number of cycles was higher in the mini‐consolidation group (4 vs. 2; p < .0001). Median relapse‐free survival was 18 months with mini‐consolidations and 12 months with IDAC (p = .0064). In multivariate analysis, the risk of relapse or death was significantly higher in the IDAC group (p = .004). Median OS was 36 versus 31 months with mini‐consolidations or IDAC, respectively (p = .46). In multivariate analysis, the consolidation regimen had no significant influence on OS (p = .43). In older AML patients, post‐remission therapy with mini‐consolidations represents an alternative to IDAC.

The use of adjuvant chemotherapy in cats with mammary carcinomas undergoing surgical removal.

PICO Question In cats with mammary carcinomas undergoing surgical removal, does the addition of adjuvant chemotherapy compared with surgical removal alone result in increased survival time? Clinical bottom line Category of research Treatment. Number and type of study designs reviewed Five retrospective cohort studies were critically reviewed. Strength of evidence Weak. Outcomes reported In cats with mammary carcinomas undergoing surgical removal, the addition of adjuvant chemotherapy compared with surgical removal alone was significantly associated with an increase in disease-specific survival time in one of the studies. This statistical significance was not found in the other four papers. Conclusion All five studies reviewed presented weak evidence for the clinical question due to their retrospective nature and weak study design. It is, therefore, concluded that there is not enough evidence to suggest that cats with mammary carcinomas that have undergone surgical treatment will have a longer survival time if treated with adjuvant chemotherapy. More prospective, placebo-controlled, double-blinded studies are needed to understand the clinical significance of adjuvant chemotherapy in cats with mammary carcinomas.

Analysis of prognosis and medical resource utilization in elderly patients with trauma: A retrospective cohort study in one trauma center

Background: Trauma is consistently among the top ten causes of death worldwide. The aging population, constituting 15.21% of adults aged over 65 in Taiwan as of November 2019, has significantly impacted healthcare expenditures. This study aimed to explore the prognosis and resource utilization in patients with geriatric trauma. Methods: This retrospective analysis included ER admissions between January 2015 and December 2017 at a Level I trauma center in southern Taiwan. Of the 5,185 eligible patients, 1,743 were elderly. Comparisons between the age groups assessed medical resource use, patient characteristics, trauma profiles, and management. Outcomes examined included mortality, complications, length of hospital stay, duration of ICU stay, and costs. Results: Elderly patients, predominantly women, exhibit more blunt injuries often resulting from accidental falls. They experienced longer hospital stays and higher medical expenses, as well as increased complication and mortality rates. Mortality predictors included age, GCS score, trauma severity score (≥16), complications, surgery, and initial hypotension. Complications correlated with prolonged length of hospital stay (LOS), early blood transfusion, and mortality, impacting overall expenditure along with trauma severity, ICU days, surgery, and AIS score (≥3). Conclusion: Elderly patients had a longer LOS, higher mortality and complication rates, and higher total medical costs. The required medical expenses for elderly trauma cases were relatively higher than those for younger individuals. Relevant authorities should consider patient age when formulating policies for trauma reimbursement. Based on our findings, healthcare resource utilization can be reduced by decreasing the length of hospital stay and mitigating trauma severity. We recommend collecting more detailed data, extending the study period, and engaging in multicenter collaborations to validate our findings and provide a roadmap for further research. We suggested that interventional studies are needed to test strategies aimed at reducing resource utilization and improving outcomes in elderly trauma patients, which would be valuable.

Anticholinergic use is associated with lower mortality but not increased hip fracture risk in Parkinson’s disease patients: a retrospective cohort study

Anticholinergic use is associated with lower mortality but not increased hip fracture risk in Parkinson’s disease patients: a retrospective cohort study

Impact of Low-Density Lipoprotein Levels on Rates of Pseudarthrosis After Anterior Cervical Discectomy and Fusion

Study Design. Retrospective cohort study. Objective. To understand how pre-operative LDL levels, statin intake, and fish oil intake affect rates of pseudarthrosis after single-level and multi-level ACDF. Summary of Background Data. Anterior cervical discectomy and fusion (ACDF) is commonly performed to treat cervical degenerative diseases or injuries causing neck pain, myelopathy, and radiculopathy. Pseudarthrosis following ACDF can lead to persistent symptoms and may require revision surgery. No studies have explored the link between low-density lipoprotein (LDL) levels and statin or fish oil intake on pseudarthrosis in ACDF. Methods. Patients undergoing ACDF were identified using TriNetX, a healthcare database with over 100 million patients. Pseudarthrosis rates following single-level and multi-level ACDF were compared between patients with high versus low LDL within one year before surgery. Pseudarthrosis rates were also compared between patients taking or not taking a statin as well as patients taking or not taking fish oil within six months before surgery. For all analyses, patients underwent propensity score matching in a 1:1 ratio based on relevant demographic factors and co-morbidities. Results. Patients with an LDL above 142 mg/dL, compared to below 66 mg/dL, had significantly higher rates of pseudarthrosis at 6-months, 1-year, and 2-years after single-level and multi-level ACDF. Patients not taking a statin or fish oil, compared to those taking a statin or fish oil respectively, also had significantly higher rates of pseudarthrosis at all time points after multi-level ACDF, but not single-level ACDF. Conclusion. Low LDL levels are associated with reduced rates of pseudarthrosis after single-level and multi-level ACDF. Statin and fish oil intake prior to surgery are also associated with reduced rates of pseudarthrosis after multi-level, but not single-level, ACDF. These associations may be used for pre-operative planning, patient optimization, and risk stratification.

The Risk Factors of High-Risk Human Papillomavirus Susceptibility and Clinical Features in HIV-Positive Patients with Anal Condyloma Acuminatum: A Retrospective Cohort Study

The Risk Factors of High-Risk Human Papillomavirus Susceptibility and Clinical Features in HIV-Positive Patients with Anal Condyloma Acuminatum: A Retrospective Cohort Study

Correlation Between Grade of Clinical Response to Neoadjuvant Therapy for Rectal Cancer and Oncologic Outcomes in the Era of Watch-and-Wait

Background: The watch-and-wait strategy provides an opportunity to pursue non-operative management in rectal cancer patients with clinical complete response after neoadjuvant therapy. The management of those with near complete response remains controversial. Objective: We assessed the oncologic outcomes of patients managed by watch-and-wait versus total mesorectal excision according to clinical response to neoadjuvant therapy. Design: Retrospective cohort study. Settings: Comprehensive cancer center in New York. Patients: Patients with rectal adenocarcinoma diagnosed between January 2006 to December 2020. Interventions: A watch-and-wait strategy of active surveillance was offered to patients if they achieved clinical complete response. Salvage surgery was utilized for watch-and-wait patients with local regrowth. Patients with an incomplete response underwent total mesorectal excision Main Outcome Measures: Local regrowth rate, organ preservation rate, disease-free survival and overall survival. Results: Patients with rectal adenocarcinoma (n = 1230) were divided into 3 response cohorts—incomplete (n = 646), near-complete (n = 189) and complete (n = 395). Eighty-one (43%) patients in the near-complete group and 351 (89%) patients in the complete group entered watch-and-wait. Three-year local regrowth rates were 40% and 24% in the near-complete and complete response cohorts, respectively. The 5-year organ preservation rate was 53% in near-complete responders, and 73% in complete responders. Five-year disease-free survival increased with greater clinical response to neoadjuvant therapy with intermediate outcomes noted for patients with a near-complete (73%) compared to complete (82%) or incomplete response (68%). Overall survival at 5 years was similar between the three cohorts (complete 90%, near-complete 86%, and incomplete 85%). Limitations: Retrospective nature. Conclusion: Greater clinical response to neoadjuvant therapy is associated with improved oncologic outcomes. Near-complete responders may avoid surgery and still achieve high organ preservation rates yet experience greater local regrowth rates than clinical complete response patients. Ongoing prospective trials integrating watch-and-wait after complete response as determined by uniform criteria will bolster the work to help treating physicians better select patients who qualify for active surveillance. See Video Abstract.

Comparison of Hearing Outcomes in Tympanoplasty With and Without Ossiculoplasty: A Retrospective Cohort Study

Comparison of Hearing Outcomes in Tympanoplasty With and Without Ossiculoplasty: A Retrospective Cohort Study

Chronic systemic inflammation predicts long-term mortality among patients with fatty liver disease: Data from the National Health and Nutrition Examination Survey 2007–2018

Background Low-grade systemic inflammation (SI) in patients with fatty liver disease (FLD) is an important hallmark of disease onset and progression. This study aims to evaluate the prognostic significance of novel SI markers in FLD. Methods This was a retrospective cohort study. We included adult patients with FLD with complete data and analyzed the association between chronic SI and long-term mortality in patients with FLD. Systemic immune-inflammation index (SII), pan-immune-inflammation value (PIV), and systemic inflammation response index (SIRI) were evaluated based on peripheral blood counts and FLD was determined by the Fatty Liver Index. Results A total of 5497 patients with FLD were included in the final analysis. SII and PIV (but not SIRI) were found to be associated with all-cause and cardiovascular mortality in univariate analysis. Multivariate Cox regression analysis and KM analysis demonstrated that SII and PIV were associated with all-cause mortality, with SII showing a nonlinear correlation in RCS. PIV (but not SII) was associated with the cardiovascular-related survival probability over time. Stratified analysis indicated that the positive correlation between SII and PIV and all-cause mortality was not altered by subgroups. Conclusions SII and PIV are strongly and consistently associated with all-cause mortality in patients with FLD, with PIV potentially showing a closer association with cardiovascular mortality.

Predictors of Recurrence After Curative Surgery for Stage I Colon Cancer: Retrospective Cohort Analysis of the Italian Society of Surgical Oncology Colorectal Cancer Network Collaborative Group

Objective: The aim of this study is to provide solid evidence to update the management of stage I colon cancer (CC) after surgery. Background: Given the low risk of recurrence of stage I CC, some international guidelines do not recommend intensive follow-up after surgery. However, data on the actual incidence, risk factors, and site of recurrences are scarce. Methods: This is a retrospective multicenter cohort study considering patients who underwent surgery at 25 Italian centers between 2010 and 2019, with a minimum follow-up of 24 months. A total of 1883 consecutive adult patients with stage I CC treated with curative surgery were considered, and 1611 fulfilled the inclusion criteria. The primary outcome was the rate of recurrence. Secondary outcomes included survival and risk factors for recurrence. Results: Eighty patients developed cancer recurrence (5.0%), of which 90% was systemic relapse. The event was more frequent in pT2 (6.0% vs 3.2%, P = 0.013), male patients (6.1% vs 3.6%, P = 0.021), in the presence of lymphovascular invasion (7.2% vs 3.6%, P = 0.01), and in cases of partial resection (11.1% vs 4.6%, P = 0.011). Also, preoperative carcinoembryonic antigen (P = 0.007) and tumor diameter (P < 0.001) were higher in the group who relapsed. Most patients had isolated cancer recurrence (90%). Recurrences peaked between 10 and 18 months after surgery and declined over time. Adjusted Cox regression analysis identified tumor diameter, carcinoembryonic antigen level, lymphovascular invasion, male gender, and less than 12 analyzed lymph nodes as significant risk factors for worse recurrence-free survival. Conclusions: This study showed that a not negligible rate of stage I CC recur after curative surgery. Most relapses occur at a single site within the first 3 years after surgery. This evidence could be used to optimize postoperative follow-up.

Anatomical insights into medial-sided talar dome osteochondral lesions: a comparative analysis of unilateral and bilateral cases and healthy controls using MRI measurements

Background The etiology of medial-sided talar osteochondral lesions (OCLs) remains insufficiently understood. Purpose To identify anatomical risk factors contributing to the development of unilateral or bilateral OCL of the talus on the medial side, utilizing morphological parameters derived from magnetic resonance imaging (MRI). Material and Methods In this retrospective study, 24 ankle MRI scans from 12 patients exhibiting bilateral OCLs of the talar dome on the medial side, 24 ankle MRIs from 24 patients with unilateral medial-sided OCLs, and 24 healthy controls matched for age, sex, and side within each group were analyzed. Six distinct MRI parameters were measured: the anterior opening angle of the talus (AOT); tibial axis-medial malleolus angle (TMM); plafond-malleolar angle (PMA); anterior talofibular ligament-posterior talofibular ligament (ATFL-PTFL) angle; the ratio of the distal tibial articular surface to the length of the trochlea tali arc (TAS/TAL); and the depth of the incisura fibularis (IncDep). Results The AOT, ATFL-PTFL angle, and TMM of individuals in both the bilateral and unilateral groups were significantly higher when compared to the healthy controls. In addition, TMM measurements in the unilateral group were significantly higher than in the bilateral group. Conclusion AOT and TMM appeared to be the primary predisposing factors in the development of both unilateral and bilateral OCLs. Furthermore, TMM shows a greater increase in unilateral OCL cases compared to bilateral OCL cases. The fact that TMM is not significantly high in known unilateral OCL cases can be a stimulus for investigating the other ankle for OCL.

Photodynamic Therapy in Acne Vulgaris: A Systematic Review

Acne is a multifactorial disorder of the pilosebaceous unit. Photodynamic therapy (PDT) is an energy-based treatment shown to be safe in acne vulgaris, although the mechanism of action of PDT in acne is incompletely understood. This review summarizes the clinical features of and treatment efficacy in acne patients treated with PDT. A systematic review of Medline, Embase, and the Cochrane Database of Systematic Reviews was conducted. Title, abstract, full-text screening, and data extraction were completed using Covidence. Studies reporting the use of PDT in patients with acne were included while clinical features and treatment responses were extracted. Treatment outcomes were scored as complete response, partial response, and no response. After screening a total of 1122 studies, 82 studies met the inclusion criteria, representing 56 prospective studies, 25 randomized controlled trials, and 1 retrospective study. Results representing 4340 patients with acne (mean age 24.4 years; 52% females) treated with PDT are summarized. Overall, 2154 (50%) participants underwent aminolevulinic acid PDT, 452 (10%) participants underwent methyl aminolevulinate PDT, 28 (<1%) participants underwent daylight PDT, and 1706 (39%) underwent other modalities of PDT. The average follow-up period after study completion was 3 months, ranging from 2 weeks to 13 months. A partial response was observed in treated patients with outcome measures including clinical response, lesion count, pain, recurrence, and patient satisfaction. This systematic review provides preliminary data summarizing the clinical features and treatment efficacy in patients with acne treated with PDT. Our results suggest a partial clinical response when using PDT to manage acne. Future studies should focus on standardizing study protocols and drawing direct comparisons between PDT and other modalities for acne treatment.

Predicting pan-cancer immune-checkpoint therapy and prognosis with a chromatin-accessibility-related alternative splicing signature: a retrospective study

Background: This study examines alternative splicing (AS) events in genes linked to chromatin accessibility in various cancers and their relation to the tumor immune microenvironment. Methods: Data from the Cancer Genome Atlas Database (TCGA) were used to identify independent prognostic factors for pan-cancer. We explored the correlation between differentially expressed genes and tumor immunity, including immune checkpoint genes, tumor development, and immune cells. A regulatory network diagram of alternative splicing-splicing factors (AS-SFs) was constructed to find potential immunotherapy targets. Results: IRF5 and E2F8 genes showed significant differential expression in pan-cancer. Age, cancer grade, primary tumor, cancer lymph nodes, and distant metastasis were independent prognostic factors. The risk model achieved good predictive performance, with AUC values of 0.705, 0.746, 0.743, and 0.743 for 1-year, 3-year, 5-year, and 10-year survival predictions, respectively. Positive correlations were found between IRF5/E2F8 and CD274/CTLA4 in certain cancers using TIMER and CIBERSORT software. Conclusions: AS events in chromatin accessibility genes (IRF5 and E2F8) have significant predictive value in pan-cancer prognosis. Our model assesses patient survival probability and highlights the synergistic impact of immune checkpoints and the AS-SF regulatory network on tumor immunotherapy.

Case characteristics and surgical efficacy in elderly patients over 65 years of age with cervical spinal cord injury without fracture and dislocation: a retrospective study

Case characteristics and surgical efficacy in elderly patients over 65 years of age with cervical spinal cord injury without fracture and dislocation: a retrospective study

Feasibility of Peroral Cholangioscopy in the Initial Endoscopic Retrograde Cholangiopancreatography for Malignant Biliary Strictures

Background: Peroral cholangioscopy (POCS) is valuable for assessing malignant biliary strictures; however, biliary drainage prior to POCS often hinders accurate diagnosis. Objectives: This retrospective study aimed to investigate the feasibility of POCS using a newly developed cholangioscope, CHF-B290, during initial endoscopic retrograde cholangiopancreatography (ERCP) for malignant biliary strictures. Methods: This multicenter retrospective study included patients who underwent initial ERCP for malignant biliary strictures at two institutions between January 2018 and March 2022. Patients who underwent initial ERCP with POCS were classified into the POCS group, and those without POCS were classified into the non-POCS group. To prevent post-POCS cholangitis, the original irrigation system for CHF-B290 was used in all POCS examinations. The primary endpoint was the rate of post-ERCP biliary infections, and the secondary endpoints were other ERCP-related complications, including pancreatitis, bleeding, and perforation. Results: Overall, 53 and 94 patients were included in the POCS and non-POCS groups, respectively. For the primary endpoint, the rate of post-ERCP biliary infection was not significantly different between the two groups (1.9% vs. 5.3%, p = 0.42). For the secondary endpoints, no significant differences were observed in the rates of post-ERCP pancreatitis (5.7% vs. 6.4%, p = 1.00) and other ERCP-related complications. The overall complication rate was 9.4% in the POCS group and 13% in the non-POCS group (p = 0.60). Conclusions: POCS during the initial ERCP for malignant biliary strictures is feasible.

The Initial Exploration of Polidocanol Sclerotherapy for the Treatment of Axillary Osmidrosis: A Retrospective Study

BACKGROUND Axillary osmidrosis (AO) is a strong, unpleasant odor that originates from the apocrine axillary glands. Treatments of AO include surgical treatment and nonsurgical treatment. The surgical procedure yields effective results with a low recurrence rate but requires a longer recovery time and has more postoperative complications. Nonsurgical treatments are minimally invasive and safe, but short-term recurrence may occur in some cases. OBJECTIVE Polidocanol sclerotherapy was first described for management of AO. This retrospective study explored the clinical efficacy in relieving symptom of AO assessed by AO severity using the axillary osmidrosis grading system and safety of polidocanol sclerotherapy in treating AO. PATIENTS AND METHODS This retrospective study included 25 patients with AO single-site study, with 12 patients receiving polidocanol (1%) sclerotherapy (the polidocanol group) and 13 receiving botulinum toxin A (BTX-A) injection (the BTX-A group). The short-term efficacy (7 days after injection), the long-term efficacy (6 months after injection), the recurrence rate, and complications were compared between the 2 groups. A p-value of <0.05 was considered statistically significant. RESULTS The short-term efficacies of polidocanol sclerotherapy and BTX-A injection were 100% and 69.2%, which was not clinically significant (p > .05), whereas their long-term efficacies were 100% and 46.2%, respectively (p < .05). The recurrence rates in the polidocanol and BTX-A groups were 25.0% and 84.6%, respectively (p < .05). The complications did not differ significantly between the 2 groups (p > .05). Although the short-term efficacy and complications were comparable between the 2 groups, the long-term efficacy of polidocanol sclerotherapy was superior to BTX-A injection. The polidocanol group has a lower recurrence rate than the BTX-A group. CONCLUSION Polidocanol sclerotherapy may provide an effective and safe treatment with longer efficacy compared to toxin, which is an effective and safe option for AO treatment.