PURPOSE To determine (a) whether superselective angioscintigraphy with technetium-99m macroaggregated albumin (99mTc-MAA) can be used for the evaluation of arteriovenous shunting in tumors and vascular malformations of the head and spine and (b) whether the amount of microparticles shunted is related to diagnosis, lesion size, or angiographic pattern. METHODS Particles of 99mTc-MAA with a cal...

Vascular and lymphatic malformations represent a challenge for clinicians. The identification of inherited somatic mutations in important signaling pathways, including the PI3K (phosphoinositide 3-kinase)/AKT (protein kinase B)/mTOR (mammalian target rapamycin), RAS (rat sarcoma)/RAF (rapidly accelerated fibrosarcoma)/MEK (mitogen-activated protein kinase)/ERK (extracellular signal-regulated ki...

BACKGROUND The vermilion plays an important role in both the aesthetic and functional aspects of facial anatomy. Due to its structural features, the complete excision of vascular anomalies on the vermilion is challenging, making it difficult to determine the appropriate treatment strategy. Thus, the authors analyzed the results of surgical treatment of vascular anomalies on the vermilion. MET...

BACKGROUND AND PURPOSE The diagnosis of spinal vascular malformations may be challenging on conventional MR imaging because neither the location of the signal abnormality in the spinal cord nor the level of the abnormal flow voids correlates with the level of the fistula. We conducted a retrospective evaluation of the utility of using a time-resolved imaging of contrast kinetics sequence in the...

Rotational cerebral angiography provides continuously changing projections and correspondingly excellent visualization of aneurysms or other vascular malformations requiring special or oblique views. Rotation angiography as part of the routine angiography gives a three-dimensional impression with one injection and series of films. Although additional subtraction technique is not possible and th...

1. Wassef M, Blei F, Adams D, Alomari A, Baselga E, Berenstein A, et al. Vascular Anomalies Classification: Recommendations From the International Society for the Study of Vascular Anomalies. Pediatrics 2015;136:e203‐14. 2. Hanson J, Gorman J, Reese J, Frazier G. Regulation of vascular endothelial growth factor, VEGF, gene promoter by the tumor suppressor, WT1. Front Biosci 2007;12:2279‐90. 3. ...

Background Pediatric vascular anomalies comprise a heterogeneous group of clinical disorders of varying severity. These anomalies are divided into vascular tumors or vascular malformations. Different therapeutic strategies have been used depending on the pathology in question. In recent years, mammalian target of rapamycin (mTOR) inhibitors have been explored as a therapeutic option in patients...

Klippel-Trénaunay syndrome (KTS) is a rare vascular congenital anomaly affecting less than 200,000 people in the United States. Vascular malformations associated with KTS tend to affect slow flow systems: venous, capillary, and lymphatic systems. The nature of the syndrome leads to a higher risk for the development of arteriovenous malformations. Our case presentation describes a patient with K...

BACKGROUND Cavernous malformations are characterized by enlarged vascular structures located in benign neural tissues within the cerebellum and spinal cord of the central nervous system. Cavernous hemangiomas (CHs) account for 5% to 12% of all spinal vascular malformations. CASE REPORT We removed a hemorrhagic thoracic mass in a 40-year-old male patient who presented with progressive neurolog...

INTERNATIONAL ANGIOLOGY 1 Andrea Ianniello, MD Radiologist, Department of Radiology Hospital G. Salvini, Garbagnate Milanese (Mi), Italy James Laredo, MD, PhD, FACS Associate Professor of Surgery, Division of Vascular Surgery, Department of Surgery George Washington University School of Medicine, Washington DC, USA Dirk A. Loose, MD Professor and Chairman of the Department for Angiology and Vas...