lymphatic vessels

Purpose: To investigate gel stent implantation with and without intraoperative sustained-release mitomycin C (MMC SR) in a rabbit model for gel stent implantation, and to examine aqueous humor outflow (AHO) postimplantation. Methods: Four groups of rabbits were included. Group 1 was untreated (control). Groups 2, 3, and 4 received the gel stent without MMC, with MMC solution (subconjunctival injection), and with MMC SR (subconjunctival injection), respectively. Intraocular pressure (IOP) and AHO were assessed via tonometry and indocyanine green-based angiography, respectively...

PURPOSE: To compare safety and efficacy of isolated and combined UV-light corneal crosslinking (CXL) and fine-needle diathermy (FND) to regress pathological corneal vessels in vivo. METHODS: Mice with inflamed and pathologically vascularized corneas received CXL or FND as monotherapy or a combination of both treatments. Corneal pathological blood and lymphatic vessels, immune cells and the morphology of anterior segment structures were evaluated. RESULTS: All three approaches were able to regress blood and lymphatic vessels in mice...

PURPOSE: Gadolinium (Gd)-based contrast agents are primarily used for contrast-enhanced magnetic resonance lymphangiography (MRL). However, overcoming venous contamination issues remains challenging. This study aims to assess the MRL efficacy of the newly developed iron-based contrast agent (INV-001) that is specially designed to mitigate venous contamination issues. The study further explores the optimal dosage, including both injection volume and concentration, required to achieve successful visualization of the popliteal lymph nodes and surrounding lymphatic vessels...

The Impella 5.5 (Abiomed) is a percutaneous, temporary left ventricular assist device (LVAD) that serves as an important method of treatment of acute cardiogenic shock refractory to medical management. The Impella 5.5 and 5.0 are commonly inserted through the right axillary artery; however, this may be limited by inadequate vessel diameter to accommodate the Impella and inadequate vessel quality. A central approach to Impella 5.5 incision has been described in the pediatric population, particularly via the innominate artery through a suprasternal and/or neck incision, with success...

Introduction: Lymphedema is a chronic and debilitating condition. This study aims to assess the efficacy and safety of lymphaticovenous anastomosis (LVA) and vascularized lymph node transfers (VLNT) for the treatment of patients suffering from lymphedema, mainly by comparing pre- and postoperative daily compression use, limb volumes, and occurrence of cellulitis. Methods: We performed a retrospective analysis of patients who were treated by a single surgeon for lymphedema with LVA and/or VLNT between March 2018 and February 2020...

OBJECTIVE: To investigate the feasibility and efficacy of assessing the calf perforating veins using the ankle pump method in a sitting position by color Doppler ultrasonography. METHODS: We performed a multicenter prospective clinical trial between November 2022 and October 2023. Eligible patients with chronic venous disease and healthy controls were enrolled. The calf perforating veins were assessed by three different methods, namely manual compression in a standing position, manual compression in a sitting position, and ankle pump in a sitting position...

OBJECTIVE: Iliocaval thrombotic obstruction is a challenging condition, especially since thrombus age and corresponding pathological remodeling at presentation are unknown, which directly impacts management. Our aim was to assess the ability of Magnetic Resonance Imaging (MRI) in determining age thresholds of experimentally created inferior vena cava (IVC) thrombosis in pigs. METHODS: We used a previously described swine model of IVC thrombosis. Animals underwent MRI at baseline, immediately after thrombosis creation and after a follow-up period extending from 2 to 28 days...

OBJECTIVE: To compare the effectiveness and safety of polidocanol 1% endovenous microfoam ablation versus endovenous thermal ablation with radiofrequency or laser energy for treatment of venous insufficiency caused by lower extremity truncal vein incompetence, via network meta-analysis of published comparative evidence. METHODS: We conducted a systematic literature review, following best practices including a prospective protocol. We screened studies published in English from 2000 to 2023 for randomized or non-randomized studies reporting direct or indirect comparisons between polidocanol 1% endovenous microfoam and endovenous thermal ablation...

OBJECTIVE: Endovenous ablation is the standard of care for patients with symptomatic superficial venous insufficiency. For patients with a history of deep venous thrombosis (DVT), there is concern for an increased risk of post-procedural complications, particularly venous thromboembolism (VTE). The objective of this study was to evaluate the safety and efficacy of endovenous thermal ablation in patients with a history of DVT. METHODS: The national Vascular Quality Initiative (VQI) Varicose Vein Registry (VVR) was queried for superficial venous procedures performed from January 2014-July 2021...

OBJECTIVE: Venous stenting has become the first line of treatment for patients with symptomatic chronic iliofemoral venous obstruction (CIVO) who have failed conservative therapy. Intravascular ultrasound (IVUS) interrogation with use of normal minimal luminal diameters or areas has become the standard to confirm diagnosis as well as determine adequacy of stenting. However, aspect ratio (ratio between the maximal and minimal luminal diameters) has also been put forth as a possible metric for determining adequacy of stenting...

OBJECTIVE: A single session catheter-directed thrombolysis (CDT) with adjunctive power pulse spray (PPS) only without thrombectomy was evaluated for its safety and effectiveness. DESIGN: Single-centre retrospective analysis of prospectively collected data. METHODS: Patients with high-risk or intermediate-risk pulmonary embolism (PE) who met the inclusion criteria and underwent a single session of CDT-PPS technique. The primary outcomes assessed were technical and clinical success and major adverse events...

BACKGROUND: Pelvic Venous Disorders (PeVD) encompass many conditions linked to chronic pelvic pain (CPP) in women. However, PeVD remain underdiagnosed due to the absence of universally accepted diagnostic criteria. The complexity of PeVD classification across specialties leads to delays in treatment. This scoping review aims to fill a gap in PeVD diagnosis and management by identifying all existing scoring or grading systems, to lay the foundation for standardised clinical scoring tools for PeVD...

Surgical robotic systems specifically developed for microsurgery are increasingly being used in recent years, particularly in reconstructive lymphatic surgery. Currently, there are two robotic systems that are used in microsurgery. Both systems feature tremor reduction and motion scaling technologies, which are intended to optimise the surgeon's precision and dexterity. In the Department of Plastic Surgery and Hand Surgery at the University Hospital Zurich, the Symani Surgical System is used in many microsurgical and supermicrosurgical procedures...

Papillary thyroid carcinoma (PTC) and papillary thyroid microcarcinoma (PTMC) are generally characterized as less invasive forms of thyroid cancer with favorable prognosis. However, once lateral cervical lymph node metastasis takes place, the prognosis may be significantly impacted. The purpose of this study was to evaluate whether there is a difference in the pattern of lateral lymph node metastasis between PTC and PTMC. A retrospective analysis was performed for PTC and PTMC patients that underwent central area dissection and unilateral lateral neck lymph node dissection (II-V area) between January 2020 and December 2021...

BACKGROUND: The territory of D3-D4 lymphadenectomy for upper rectal and sigmoid colon cancer varies, and its oncological efficacy is unclear. This prospective study aimed to standardize the surgical technique of robotic D3-D4 lymphadenectomy and clarify its oncologic significance. METHODS: Patients with upper rectal or sigmoid colon cancer with clinically suspected more than N2 lymph node metastasis were prospectively recruited to undergo standardized robotic D3-D4 lymphadenectomy...

OBJECTIVE: DOT1L is the only known histone H3K79 methyltransferase essential for the development of the embryonic cardiovascular system, including the heart, blood vessels, and lymphatic vessels, through transcriptional regulation. Our previous study demonstrated that Dot1l deletion results in aberrant lymphatic development and function. However, its precise function in the postnatal cardiovascular system remains unknown. METHODS: Using conditional and inducible Dot1l knockout (KO) mice, along with a reporter strain carrying the Geo gene at the Dot1l locus, DOT1L expression and its function in the vascular system during postnatal life were investigated...

Meningeal lymphatic vessels (mLVs) play a pivotal role in regulating metabolic waste from cerebrospinal fluid (CSF). However, the current limitations in field of view and resolution of existing imaging techniques impede understanding the stereoscopic morphology and dynamic behavior of mLVs in vivo. Here, we utilized dual-contrast functional photoacoustic microscopy to achieve wide-field intravital imaging of the lymphatic system, including mLVs and glymphatic pathways. The stereoscopic photoacoustic microscopy based on opto-acoustic confocal features has a depth imaging capability of 3...

OBJECTIVE: Ear acupuncture, as a system for treating and preventing diseases through stimulation of points on the auricle, has been systematically introduced during the last 60 years. Although the auricular cartography was described somatotopically as an inverted fetus by Paul Nogier, MD, the underlying mechanism of auricular stimulation remains unclear. The aim of this research was to gain an understanding of the structural basis of auricular stimulation, as well as showing the distribution of the nerve fibers, and the blood and lymphatic vessels...

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The complex interplay between malignant cells and the cellular and molecular components of the tumor stroma is a key aspect of cancer growth and development. These tumor-host interactions are often affected by soluble bioactive molecules such as proteoglycans. Decorin, an archetypical small leucine-rich proteoglycan primarily expressed by stromal cells, affects cancer growth in its soluble form by interacting with several receptor tyrosine kinases (RTK). Overall, decorin leads to a context-dependent and protracted cessation of oncogenic RTK activity by attenuating their ability to drive a prosurvival program and to sustain a proangiogenic network...