Active clinical trials for "Vascular Malformations"

Capillary malformations (port-wine stains) consist of abnormally developed capillary blood vessels in the skin. To date, laser therapy is the only widely accepted treatment modality for capillary malformations, but this therapy has a suboptimal effect in approximately 50-60% of patients. Intralesional bleomycin injections (sclerotherapy) are a common effective treatment option for vascular malformations with blood vessels with larger diameters. However, bleomycin cannot be injected adequately in the small sized vessels of capillary malformations. The use of an electric field over the tissue (electroporation) may solve this problem: it increases cell membrane permeability and therefore promotes localized delivery of drugs, within (endothelial) cells. Electroporation in combination with bleomycin sclerotherapy ('electrosclerotherapy') may therefore offer new therapeutic options for capillary malformations. This proof of principle study aims to explore the effectiveness, safety and feasibility of this potential treatment option in a within-patient-controlled pilot study.

Congenital vascular anomalies are uncommon and belong to the group of rare diseases.These vascular malformations can cause serious complications including obstruction of vital organs and their function, recurrent infection and significantly reduced quality of life of persons affected.Treatment options range from conservative to surgical extirpation or intralesional embolisation/sclerosis. Unfortunately, this is often not enough. Many patients still have complaints like severe pain and invalidation due to the lymphatic or venous malformation making a normal functional life impossible. Recent case reports mention the positive effects of refractory patients with Sirolimus. Sirolimus, also known as rapamycin, is currently the only FDA-approved mammalian target of rapamycin (mTOR) inhibitor.

The purpose of this study is to determine if the use of sirolimus in the treatment of children and young adults with complicated vascular anomalies will prove to be safe and provide objective response resulting in improved clinical status and quality of life. Funding Source - FDA OOPD (Food and Drug Administration - Office of Orphan Products Development)

Gastrointestinal vascular malformation (GIVM), which is an important cause of acute or chronic gastrointestinal bleeding, consequently is in dire of effective treatment. The investigators' previous study first confirmed thalidomide treatment of GIVM bleeding was safe and effective. This trial intends to investigate the efficiency of endoscopic intervention to the hemorrhage due to GIVM. What more, the research tends to suggest standardizing clinical paths for small bowel bleeding due to GIVM.

The investigators goal is to create a better understanding of patient with SVMs reported outcomes for bladder management strategies before and after surgery.

In some cases the standard J-tip guidewire cannot deliver the catheter into the aortic root, because of arterial loops or spasm. In these cases a hydrophilic guidewire (Terumo) gives the right lubricity and good shape retention to guide the catheter through the artery. However, the Terumo wire does not give much torque and could therefore easily penetrate side branches and cause dissection or perforation. The latest Silverway guidewire has some new advantages which is easier to guide and could cause less complications while faster delivery of catheters to the aortic valve. The investigators aim to compare both guide wires.

PURPOSE The purpose of this study is to learn more about multifocal lymphangioendotheliomatosis with thrombocytopenia (MLT). MLT is a rare vascular disorder characterized by multiple congenital skin and visceral lesions, profound thrombocytopenia, and gastrointestinal bleeding. The skin lesions may appear red, brown or blue, often misdiagnosed as hemangiomas. The gastrointestinal tract, liver, and lungs are the most common internal organs involved. The severe thrombocytopenia (low platelets) is believed to be the result of platelet trapping within the skin and visceral vascular lesions. Severe and chronic gastrointestinal bleeding is common during infancy and early childhood. Although a relatively newly described entity, MLT was likely previously reported as hemangiomas, blue rubber bleb nevus syndrome, diffuse hemangiomatosis, Kasabach-Merritt phenomenon, and hereditary hemorrhagic telangiectasia. The term cutaneovisceral angiomatosis with thrombocytopenia is also a term used for this same disease. This study is a longitudinal cohort study of MLT to collect detailed clinical data on the distribution of disease, disease severity, and complications. This data will be used to create diagnostic criteria and an evaluation protocol for infants with this disease

The purpose of this study is to determine if there are genes that are common in children with infantile hemangioma. This information will allow physicians to improve care for patients who have been diagnosed with this disease and to provide their parents with more complete information regarding the cause of this disease. This research is being done because many unanswered questions remain regarding children with infantile hemangioma. There are very few medications to treat infants with hemangiomas.

The low-flow malformations include venous and lymphatic malformations. The malformation often affects the skin and can extend deep to the muscles and bone, as well as to deep organs. Children with low-flow vascular malformation and their family have difficulty living with their illness and have an impact on their life quality. In this context, the aim of the study is to develope life quality test for the children between 11 to 15 years old.

In this research study investigators want to learn more about capillary malformations which are also known as port wine stains. Investigators are asking children with capillary malformations (port wine stains) to be in the research, because investigators do not have a good idea of what to expect from the current treatments of these malformations. These malformations are treated with laser as clinically indicated and there are no standardized methods to assess improvement.