Japanese Clinical Practice Guidelines for Vascular Tumors, Vascular Malformations, Lymphatic Malformations, and

Yoshiaki Kinoshita1, Kosuke Ishikawa2, Sadanori Akita3,4

  • 1Department of Pediatric Surgery, Niigata University, Niigata City, Japan.

Insights

These guidelines offer evidence-based treatment strategies for hemangiomas and vascular malformations. They systematize care for improved patient outcomes in vascular anomalies.

Area of Science:

  • Vascular Surgery
  • Dermatology
  • Pediatric Oncology

Background:

  • Hemangiomas and vascular malformations require standardized treatment protocols.
  • Current management strategies vary, necessitating evidence-based guidelines.

Purpose of the Study:

  • To develop comprehensive clinical practice guidelines for managing vascular tumors, malformations, and related conditions.
  • To optimize treatment efficacy, safety, and outcomes using evidence-based medicine.

Main Methods:

  • Formulated clinical questions (CQs) based on critical clinical issues.
  • Conducted systematic literature reviews of studies published from 1980-2020 in PubMed and JCRM.
  • Assessed evidence strength and recommendations using the Minds technique.

Main Results:

  • Addressed 38 CQs covering various treatment modalities including resection, sclerotherapy, embolization, drug therapy, laser, and radiotherapy.
  • Considered treatment variations based on lesion location, symptoms, and timing.
  • Included diagnostic criteria, pathological diagnosis, and genetic factors of vascular anomalies.

Conclusions:

  • The Japanese Clinical Practice Guidelines for Vascular Tumors, Vascular Malformations, Lymphatic Malformations, and Lymphangiomatosis 2022 provide a systematic, evidence-based approach.
  • These guidelines aim to standardize and improve the management of diverse vascular anomalies.

Related Concept Videos

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...
298
Esophageal Varices-II: Clinical Features and Management01:28

Esophageal Varices-II: Clinical Features and Management

Esophageal varices often manifest as gastrointestinal bleeding episodes, presenting symptoms like hematemesis (vomiting of blood), hematochezia (passing fresh blood via the rectum), and melena (black, tarry stools). Other signs can include weight loss, anorexia, abdominal discomfort, jaundice, pruritus, altered mental status, and muscle cramps.
In the initial assessment, a thorough review of the patient's medical history is vital to identify risk factors such as liver disease, alcohol...
820
Lymphatic Vessels and Lymph Transport01:16

Lymphatic Vessels and Lymph Transport

Lymphatic vessels, known as lymphatics, are crucial in transporting lymph from peripheral tissues to our venous system. This process begins with lymph entering through tiny capillaries that branch through tissues. These capillaries have unique features such as larger diameters, thinner walls, and a distinctive one-way valve system formed by overlapping endothelial cells.
This one-way system allows fluids, solutes, and even pathogens to enter but prevents their return to the intercellular...
24.9K
Development of the Lymphatic System01:15

Development of the Lymphatic System

The development of lymphatic tissues and vessels in embryonic life begins around the fifth week. These structures originate from the mesoderm layer, with lymph sacs emerging from developing veins.
The first lymph sacs to form are the paired jugular lymph sacs located at the junction of the internal jugular and subclavian veins. From these sacs, lymphatic capillary plexuses extend to the thorax, upper limbs, neck, and head, eventually forming lymphatic vessels. Each jugular lymph sac maintains a...
2.8K
Overview of the Vascular System01:20

Overview of the Vascular System

The vascular system comprises an extensive network of arteries, capillaries, and veins. The vascular system can be broadly divided into the blood and lymphatic systems. Typically, blood vessels can be categorized into three histological regions: tunica intima, tunica media, and tunica adventitia. The tunica intima consists of a single layer of endothelial cells attached to the basal lamina. Underlying the basal lamina is a connective tissue layer and an elastic lamina that gives stability and...
3.8K
Regulation of Angiogenesis and Blood Supply01:24

Regulation of Angiogenesis and Blood Supply

Rapidly dividing tumors, embryos, and wounded tissues require more oxygen than usual, lowering the oxygen concentration in the blood. At low oxygen or hypoxic conditions, an oxygen-sensitive transcription factor called the hypoxia-inducible factor 1 or HIF1 is activated. HIF1 is a dimeric protein of alpha (ɑ) and beta (β) subunits.  Under optimal oxygen conditions, HIF1β is present in the nucleus while HIF1ɑ remains in the cytosol. HIF1ɑ is hydroxylated by prolyl...
4.0K