Understanding lymphedema requires more than assessing visible swelling.

An essential step is evaluating how the lymphatic system is functioning internally.

Lymphoscintigraphy is internationally recognized as the gold standard imaging modality for diagnosing extremity lymphedema.

It provides objective, functional information about lymphatic flow, lymph node activity, dermal backflow, and the severity of lymphatic obstruction—details that cannot be determined by physical examination alone.

On this page, Lymphedema Clinic Tokyo introduces and recommends an authoritative review article published in the Journal of Surgical Oncology (2020), which examines current controversies and best practices in lymphoscintigraphy.

The review explains how differences in imaging protocols and interpretation can influence diagnosis, severity assessment, and clinical decision-making, and emphasizes the importance of standardized, clinically meaningful evaluation.

 

The article also discusses how lymphoscintigraphy findings—when combined with objective clinical assessment—can support personalized treatment planning, including conservative management and microsurgical options such as lymphaticovenular anastomosis (LVA), when appropriate.

At Lymphedema Clinic Tokyo, we apply these evidence-based principles in daily practice, integrating lymphoscintigraphy with ultrasound, ICG lymphography, and careful clinical evaluation.

Our goal is to provide safe, realistic, and individualized care for each patient, including international patients considering consultation in Tokyo.

 

This page is designed to help you understand:

What lymphoscintigraphy can (and cannot) show

Why accurate interpretation matters

How imaging supports informed, personalized lymphedema care

 

A Recommended Review Article for International Patients with Lymphedema

When patients consider treatment for lymphedema, one of the most important questions is not only how swollen the limb appears, but how the lymphatic system is functioning internally.

Lymphoscintigraphy has long been recognized internationally as the gold standard imaging modality for the diagnosis of extremity lymphedema.

Unlike physical examination alone, it allows clinicians to evaluate lymphatic flow, lymph node function, dermal backflow, and the severity of lymphatic obstruction in an objective and functional manner.

On this page, we at Lymphedema Clinic Tokyo introduce and recommend an important review article published in the Journal of Surgical Oncology, which carefully examines the current role, limitations, and clinical application of lymphoscintigraphy in patients with upper- and lower-extremity lymphedema.

 

🔷 What Is the Focus of This Review Article?

This article, authored by Marco Pappalardo, MD, MSc, and Ming-Huei Cheng, MD, MBA, provides a comprehensive overview of lymphoscintigraphy, addressing key questions such as:

Why lymphoscintigraphy remains central to the diagnosis of lymphedema

How differences in imaging protocols can affect interpretation

Which lymphoscintigraphy findings are clinically meaningful

How imaging results can be integrated into severity assessment and treatment planning

The authors highlight that while lymphoscintigraphy is a powerful diagnostic tool, its value depends on standardized protocols and appropriate interpretation.

 

🔷 What Can Lymphoscintigraphy Show?

According to this review, lymphoscintigraphy can provide critical information about:

Delayed or absent lymphatic transport

Visualization (or loss) of proximal lymph nodes

Presence and extent of dermal backflow

Development of collateral lymphatic pathways

These findings help distinguish true lymphedema from other causes of limb swelling and clarify how advanced lymphatic dysfunction may be.

 

🔷 Why Interpretation Matters

The authors emphasize that one of the main controversies surrounding lymphoscintigraphy is variability in technique and interpretation between centers.

Differences in:

Radiotracer type and particle size

Injection depth (intradermal vs. subcutaneous)

Imaging timing (early vs. delayed images)

can significantly influence image quality and diagnostic conclusions.

This review therefore stresses the importance of using standardized methods and clinically relevant staging systems to avoid misinterpretation.

 

🔷 The Role of Lymphoscintigraphy Staging in Treatment Planning

A key contribution discussed in this article is the Taiwan Lymphoscintigraphy Staging (TLS) system, which classifies lymphatic dysfunction into:

Normal lymphatic drainage

Partial lymphatic obstruction

Total lymphatic obstruction

using a simple and reproducible framework.

The review explains how such staging systems can support treatment selection, including:

Conservative management

Lymphaticovenular anastomosis (LVA)

Other microsurgical options

while clearly stating that imaging alone should never dictate treatment decisions.

 

🔷 Our Perspective at Lymphedema Clinic Tokyo (We Believe)

We believe that imaging should guide understanding, not replace clinical judgment.

At Lymphedema Clinic Tokyo, we use lymphoscintigraphy as part of a comprehensive evaluation that also includes:

Detailed clinical assessment

Ultrasound examination

Indocyanine green (ICG) lymphography

Each patient’s symptoms, lifestyle, and treatment goals

Based on this integrated approach, we may recommend:

Conservative therapy

Same-day lymphaticovenular anastomosis (LVA)

Or a carefully balanced combination of both

This review article supports our clinical philosophy:

accurate diagnosis and thoughtful interpretation of imaging are essential for safe, realistic, and individualized lymphedema care.

 

🔷 Reference (Original Review Article)

Pappalardo M, Cheng MH.

Lymphoscintigraphy for the diagnosis of extremity lymphedema: Current controversies regarding protocol, interpretation, and clinical application.

Journal of Surgical Oncology. 2020;121:37–47.

https://doi.org/10.1002/jso.25526

Patients interested in the scientific background of lymphedema diagnosis and imaging may find this article informative.

 

🔷 Other Research We Introduce

At Lymphedema Clinic Tokyo, we regularly review and introduce carefully selected international research that we believe is helpful for patients with lymphedema.

📌 List of recommended research articles

https://www.english-mominoki-shinryosho.net/research/

(The full list is available at the bottom of the page.)

 

🔷 In Closing

Lymphedema is a complex condition, and there is no single treatment that fits everyone.

By combining internationally validated imaging techniques with careful clinical evaluation, our goal is to help each patient understand their condition and make informed decisions with confidence.

If you are considering consultation or would like to discuss your diagnostic results, we would be honored to support you.

 

 

【Frequently Asked Questions (FAQ)】

Lymphoscintigraphy and Lymphedema Diagnosis

(Based on a Recommended Review Article)

 

Q1. What is lymphoscintigraphy?

Lymphoscintigraphy is a nuclear medicine imaging test that evaluates how lymphatic fluid flows through the body.

A small amount of radioactive tracer is injected into the skin, and its movement through lymphatic vessels and lymph nodes is recorded over time.

It is internationally recognized as the gold standard imaging modality for diagnosing lymphedema.

 

 

Q2. Why is lymphoscintigraphy important for patients with lymphedema?

Lymphedema is not only about visible swelling.

The most important factor is how well the lymphatic system is functioning internally.

Lymphoscintigraphy helps clinicians understand:

Whether lymphatic flow is delayed or blocked

Whether lymph nodes are functioning

Whether lymphatic fluid is refluxing into the skin (dermal backflow)

This information is essential for accurate diagnosis and treatment planning.

 

 

Q3. What is the main focus of the review article introduced on this page?

The review article by Pappalardo and Cheng (Journal of Surgical Oncology, 2020) examines:

Why lymphoscintigraphy remains central to lymphedema diagnosis

Current controversies regarding imaging protocols

How lymphoscintigraphy findings should be interpreted

How imaging results can be applied to severity assessment and treatment selection

This article helps clarify how lymphoscintigraphy should be used correctly in clinical practice.

 

 

Q4. Is lymphoscintigraphy always necessary to diagnose lymphedema?

Not in every case.

In some patients, the diagnosis of lymphedema is clear based on medical history and physical examination.

However, lymphoscintigraphy is especially valuable when:

The diagnosis is uncertain

The cause of limb swelling is unclear

Treatment planning requires a deeper understanding of lymphatic function

 

 

Q5. Can lymphoscintigraphy determine how severe my lymphedema is?

Yes, to a certain extent.

The review explains that lymphoscintigraphy can help assess the severity of lymphatic dysfunction, especially when standardized staging systems (such as the Taiwan Lymphoscintigraphy Staging) are used.

However, severity assessment should always combine:

Imaging findings

Clinical symptoms

Limb measurements

Patient-reported impact on daily life

 

 

Q6. Does the imaging result alone decide whether surgery is needed?

No.

Imaging findings alone should never dictate treatment decisions.

The review strongly emphasizes that lymphoscintigraphy must be interpreted together with:

Clinical findings

Other imaging modalities (such as ultrasound or ICG lymphography)

Patient goals and lifestyle

Treatment decisions should always be individualized.

 

 

Q7. What is lymphaticovenular anastomosis (LVA), and how is it related to imaging?

Lymphaticovenular anastomosis (LVA) is a minimally invasive microsurgical procedure that connects functioning lymphatic vessels to small veins to improve lymph drainage.

Lymphoscintigraphy can help identify:

Whether functional lymphatic pathways may still exist

Whether LVA could be considered as a treatment option

However, additional imaging and careful evaluation are required before recommending surgery.

 

 

Q8. How does Lymphedema Clinic Tokyo use the information from this review?

At Lymphedema Clinic Tokyo, we use lymphoscintigraphy as part of a comprehensive diagnostic approach, together with:

Detailed clinical assessment

Ultrasound examination

Indocyanine green (ICG) lymphography

Based on this integrated evaluation, we may recommend:

Conservative treatment

Same-day LVA surgery

Or a personalized combination of both

Our goal is to provide safe, realistic, and individualized care for each patient.

 

 

Q9. Can patients read the original review article themselves?

Yes.

Although the article is written for medical professionals, motivated patients may find it helpful to understand the scientific background of lymphoscintigraphy and lymphedema diagnosis.

Reference:

Pappalardo M, Cheng MH.

Lymphoscintigraphy for the diagnosis of extremity lymphedema: Current controversies regarding protocol, interpretation, and clinical application.

Journal of Surgical Oncology. 2020;121:37–47.

https://doi.org/10.1002/jso.25526

 

 

Q10. Are there other research articles recommended by your clinic?

Yes.

We regularly introduce carefully selected international research that we believe is helpful for patients with lymphedema.

📌 List of recommended research articles

https://www.english-mominoki-shinryosho.net/research/

(The full list is available at the bottom of the page.)

 

 

【Our message】

Living with lymphedema often raises important questions:

What does my imaging result really mean?

Am I a candidate for surgery such as LVA?

Which treatment approach fits my condition and lifestyle best?

At Lymphedema Clinic Tokyo, we support international patients through evidence-based diagnosis and personalized treatment planning, combining conservative therapy and same-day microsurgical options when appropriate.

 

If you are considering consultation or would like to discuss your diagnostic results, we would be pleased to assist you.

▶ Learn more about online consultations and international patient care

▶ Contact Lymphedema Clinic Tokyo to explore your treatment options

Editorial Responsibility: Makoto Mihara, Yohei Iwanaga