Successful cholangioscopic electrocoagulation for biliary papillomatosis: Report covering six cases (with video)

Novel needle-type electrocoagulation and combination pharmacotherapy: Basic and clinical studies on efficacy and safety in treating keloids

BACKGROUND AND AIM

Keloids cannot be effectively treated using monotherapy regimens. This study aimed to evaluate the efficacy and safety of ablation (a novel needle-assisted electrocoagulation technique) combined with pharmacotherapy (corticosteroid and 5-fluorouracil [5-FU] injections) in removing keloids and to investigate the underlying biological mechanisms.

METHODS

The effects of energy consumption and duration of needle-assisted electrocoagulation on the ablation zone were tested in porcine liver tissue, which simulates human skin. The regulatory effects of ablation combined with pharmacotherapy on collagen deposition, cell proliferation, and angiogenesis were analyzed in a keloid-bearing nude mouse model in vivo. In a clinical trial involving six patients with keloids, the Vancouver Scar Scale (VSS) and Patient and Observer Scar Assessment Scale (POSAS) scores were graded before treatment and 1 month after one cycle of ablation combined with corticosteroid and 5-FU therapy.

RESULTS

Higher energy consumption and longer duration of electrocoagulation resulted in a larger ablation zone and higher surface temperature. Ablation combined with pharmacotherapy significantly reduced keloid volume in nude mice, upregulated MMP-1 and MMP-3, downregulated COL I and COL III, and inhibited angiogenesis and proliferation. This combination also significantly reduced the VSS and POSAS scores in patients with keloids after treatment without any obvious adverse events.

CONCLUSION

Our findings show that electroablation combined with pharmacotherapy effectively reduces keloid volume by inhibiting collagen deposition, angiogenesis, and cell proliferation. Thus, this novel combination may serve as a safe therapeutic approach for keloid removal.

Intraductal papillary neoplasm of the bile duct: The new frontier of biliary pathology

Intraductal papillary neoplasms of the bile duct (IPNBs) represent a rare variant of biliary tumors characterized by a papillary growth within the bile duct lumen. Since their first description in 2001, several classifications have been proposed, mainly based on histopathological, radiological and clinical features, although no specific guidelines addressing their management have been developed. Bile duct neoplasms generally develop through a multistep process, involving different precursor pathways, ranging from the initial lesion, detectable only microscopically, i.e. biliary intraepithelial neoplasia, to the distinctive grades of IPNB until the final stage represented by invasive cholangiocarcinoma. Complex and advanced investigations, mainly relying on magnetic resonance imaging (MRI) and cholangioscopy, are required to reach a correct diagnosis and to define an adequate bile duct mapping, which supports proper treatment. The recently introduced subclassifications of types 1 and 2 highlight the histopathological and clinical aspects of IPNB, as well as their natural evolution with a particular focus on prognosis and survival. Aggressive surgical resection, including hepatectomy, pancreaticoduodenectomy or both, represents the treatment of choice, yielding optimal results in terms of survival, although several endoscopic approaches have been described. IPNBs are newly recognized preinvasive neoplasms of the bile duct with high malignant potential. The novel subclassification of types 1 and 2 defines the histological and clinical aspects, prognosis and survival. Diagnosis is mainly based on MRI and cholangioscopy. Surgical resection represents the mainstay of treatment, although endoscopic resection is currently applied to nonsurgically fit patients. New frontiers in genetic research have identified the processes underlying the carcinogenesis of IPNB, to identify targeted therapies.

Analysis of Targeted Post-operative Nursing Outcome in 1246 Patients with Percutaneous Transhepatic Biliary Drainage

Jaundice is a detection index in many disease conditions commonly characterized by yellowish staining of the skin and mucous membranes. This work studies the postoperative care outcome in 1,246 patients (669 males and 577 females) with obstructive jaundice who underwent percutaneous transhepatic biliary drainage (PTBD). These patients were admitted to the interventional vascular surgery department of our hospital from February 2017 to February 2022. From the results, frequent wound re-dressing and maintenance of the drainage tube had significant positive influence on wound healing and patient recovery. The data also showed strict adherence by patients to the doctor’s recommendation advising them to visit the interventional specialist care clinic in time for wound dressing change and drainage tube maintenance. As a result, there was no significant difference in wound allergy, exudation, redness and loosening among patients. A cross-sectional analysis of the effect of age on recovery revealed variations in the healing pattern (wound loosening and the redness) between patients of different ages although the relationship is not very clear due to the limited sample size. Efficient drainage tube maintenance promoted recovery and prevented the occurrence of related complications such as PTBD tube blockage and biliary tract infection. The establishment of the interventional specialist care clinic used in this study additionally ensures patients’ safety, and the incidence of complications have been reduced drastically. These achievements are attributable to the implementation of regular dressing change, drainage tube maintenance and health education for patients with PTBD tube. These practices have also improved on the level of specialty in nursing practice, increased the professional value of nurses and better recognition by the society.