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Related Concept Videos

Varicose Veins I: Introduction01:26

Varicose Veins I: Introduction

Varicose veins, or varicosities, are abnormally dilated and twisted superficial veins caused by venous valve incompetence. This condition commonly affects the lower extremities, especially the saphenous veins, due to the higher pressure from prolonged standing and walking. However, varicosities can also occur in other areas, such as the esophagus, vulva, spermatic cords, and anorectal region.Etiology and typesPrimary varicose veins, often idiopathic, are more common in women due to inherent...
Esophageal Varices-I: Introduction01:24

Esophageal Varices-I: Introduction

Esophageal varices are dilated, tortuous veins which are found mainly in the submucosa of the lower esophagus but which may also appear higher up or extend into the stomach. They develop due to increased pressure in the portal venous system, often as a result of liver cirrhosis. This condition scars and damages the liver, impeding normal blood flow through the portal vein. To compensate, blood seeks alternative pathways, forming fragile new vessels (varices) in the esophagus and stomach. These...
Venous Thrombosis II: Clinical Manifestations and Diagnostic Studies01:20

Venous Thrombosis II: Clinical Manifestations and Diagnostic Studies

The key difference between Superficial Vein Thrombosis (SVT) and Deep Vein Thrombosis (DVT) lies in their location and severity.Clinical ManifestationsSVT typically presents with localized pain, tenderness, and redness along the course of a superficial vein, often accompanied by a palpable, cord-like structure under the skin. This condition is usually less dangerous than DVT but can be uncomfortable and may lead to complications such as cellulitis or, rarely, a clot extension into the deep...
Development of Blood Vessels01:07

Development of Blood Vessels

The development of the vascular system in a fetus is a complex and intricate process that begins as early as 15 to 16 days post-conception. This process starts outside the embryo, specifically in the mesoderm of the yolk sac, chorion, and connecting stalk. Approximately two days later, the formation of blood vessels occurs within the embryo itself.
The initial formation of this system is facilitated by the small amount of yolk present in the ovum and yolk sac. Blood vessels originate from...
Veins01:17

Veins

Veins are an integral part of our circulatory system, serving as the blood vessels that transport blood from all body regions to the heart. They are a network of hollow tubes that carry blood low in oxygen from the body's cells back to the heart for reoxygenation. Veins are crucial for maintaining the body's overall fluid balance and the continuous circulation of blood.
Structure of Veins:
The structure of veins is specifically designed to assist in the low-pressure transportation of blood...
Varicose Veins II: Diagnostic Studies and Interprofessional Care01:26

Varicose Veins II: Diagnostic Studies and Interprofessional Care

Varicose veins, or varicosities, develop when the valves in the veins, which control blood flow, weaken or damage. It causes blood to pool and the veins to enlarge. Understanding the clinical manifestations, diagnostic approaches, and management options for varicose veins is crucial for effective treatment and relief.Clinical manifestationsClinical manifestations of varicose veins include a heavy, achy feeling or pain after prolonged standing or sitting. This discomfort can often be relieved by...

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A Patient-Derived Xenograft Model for Venous Malformation
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Vascular anomalies in children.

L Weibel1

  • 1Pediatric Dermatology, University Children's Hospital Zurich, Zurich, Switzerland. lisa.weibel@kispi.uzh.ch

VASA. Zeitschrift Fur Gefasskrankheiten
|November 18, 2011
PubMed
Summary

Vascular anomalies, including infantile hemangiomas and malformations, require early diagnosis in children. Understanding their distinct features is crucial for appropriate multidisciplinary management and identifying associated syndromes.

Area of Science:

  • Pediatric vascular disorders
  • Congenital anomalies
  • Neoplastic and malformative vascular lesions

Background:

  • Vascular anomalies are broadly classified into tumors (e.g., infantile hemangiomas) and malformations.
  • Infantile hemangiomas are benign neoplasms with distinct growth and involution phases.
  • Vascular malformations are rare structural defects due to errors in blood vessel and lymphatic development.

Purpose of the Study:

  • To differentiate between vascular tumors and malformations in early childhood.
  • To highlight the importance of early diagnosis for distinct clinical outcomes.
  • To provide characteristic clinical features for identifying vascular anomalies and associated syndromes.

Main Methods:

  • Review of clinical features of vascular anomalies.

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  • Differential diagnosis of infantile hemangiomas versus vascular malformations.
  • Identification of diagnostic clues for early detection.

    • Main Results:

    • Distinct clinical presentations aid in classifying vascular anomalies.
    • Early diagnosis impacts morbidity, prognosis, and management strategies.
    • Specific features can indicate underlying genetic syndromes associated with vascular anomalies.

    Conclusions:

    • Accurate early diagnosis of vascular anomalies is essential for optimal patient outcomes.
    • Recognizing characteristic clinical signs facilitates timely intervention.
    • A multidisciplinary approach is often necessary for managing complex vascular anomalies.