For patients living with lymphedema, understanding how the lymphatic system is functioning internally is a critical step in choosing the most appropriate treatment.

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

It provides an objective, whole-limb assessment of lymphatic flow, lymph node function, and the severity of lymphatic obstruction—information that cannot be determined by physical examination alone.

On this page, Lymphedema Clinic Tokyo introduces and recommends an important peer-reviewed study published in Annals of Surgery, which validates the Taiwan Lymphoscintigraphy Staging system.

 

This staging method classifies lymphoscintigraphy findings into seven stages, helping clinicians better understand disease severity and supporting evidence-based treatment planning.

The study demonstrates that lymphoscintigraphy staging correlates closely with clinical severity, limb volume differences, and the risk of complications such as cellulitis.

It also shows how combining imaging-based staging with objective clinical grading can assist in selecting the most appropriate treatment approach—whether conservative therapy, microsurgical options such as lymphaticovenular anastomosis (LVA), or a thoughtful combination of both.

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 personalized, realistic, and safe treatment strategies for each patient, including international patients considering consultation in Tokyo.

 

This page is designed to help you better understand:

What lymphoscintigraphy results mean

How scientific research supports treatment decisions

Why accurate staging is essential for individualized lymphedema care

 

🔷 Research Introduction

A Recommended Study for International Patients with Lymphedema

When considering treatment options for lymphedema, one of the most important questions is not simply how swollen the limb looks, but how the lymphatic system is functioning internally.

Lymphoscintigraphy is internationally recognized as the gold standard imaging modality for the diagnosis of lymphedema.

It allows clinicians to evaluate lymphatic flow, obstruction, dermal backflow, and lymph node function—information that cannot be obtained from physical examination alone.

On this page, we at Lymphedema Clinic Tokyo introduce and recommend a landmark peer-reviewed study from Taiwan that validates a structured and reproducible way to interpret lymphoscintigraphy findings and apply them to real clinical decision-making.

 

🔷 What Is the Taiwan Lymphoscintigraphy Staging?

In this study, Cheng and colleagues developed the Taiwan Lymphoscintigraphy Staging System, which classifies lymphoscintigraphy findings into seven stages (L-0 to T-6) based on:

Visualization of proximal lymph nodes

Patency or absence of lymphatic ducts

Presence and extent of dermal backflow

Degree of lymphatic obstruction

Patients are broadly categorized into:

Normal lymphatic drainage

Partial lymphatic obstruction

Total lymphatic obstruction

This staging system was designed to be objective, reproducible, and clinically meaningful.

 

🔷 Key Findings of This Research

This large clinical study analyzed 285 patients with unilateral upper or lower extremity lymphedema and demonstrated that:

The Taiwan Lymphoscintigraphy Staging has excellent inter- and intra-observer reliability, meaning different clinicians can consistently reach the same conclusions.

Imaging stages strongly correlate with:

Limb circumference difference

CT-measured volumetric difference

Frequency of cellulitis episodes

When treatment selection was guided by a combination of:

Lymphoscintigraphy staging and

Objective clinical grading (Cheng Lymphedema Grading)

patients who underwent appropriately selected surgical treatment showed more favorable long-term outcomes than those treated conservatively alone.

Importantly, the study does not suggest that surgery is necessary for all patients, but rather that accurate staging helps identify the most appropriate treatment strategy for each individual.

 

🔷 Our Perspective at Lymphedema Clinic Tokyo (We Believe)

We believe that lymphedema treatment should never be based on appearance alone.

At Lymphedema Clinic Tokyo, we use lymphoscintigraphy as a tool to understand where and how the lymphatic system is impaired, and then integrate this information with:

Clinical symptoms and daily functional impact

Ultrasound and ICG lymphography findings

Patient goals, lifestyle, and prior treatments

Based on this comprehensive evaluation, we may recommend:

Conservative treatment (compression therapy, skincare, exercise)

Lymphaticovenular anastomosis (LVA) as a same-day microsurgical procedure

Or a thoughtful combination of both approaches

This study supports our clinical philosophy:

accurate diagnosis and staging are the foundation of safe, realistic, and personalized lymphedema care.

 

🔷 Why We Respect and Recommend This Study

The senior author, Dr. Ming-Huey Cheng, is internationally recognized for his contributions to lymphatic microsurgery and lymphedema research.

We deeply respect the scientific rigor and clinical relevance of this work, which bridges imaging, objective grading, and treatment outcomes.

The Taiwan Lymphoscintigraphy Staging has also influenced how we explain imaging results to our patients—helping them understand why certain treatments are recommended and what can realistically be expected.

 

🔷 Reference (Original Research Article)

Cheng MH, Pappalardo M, Lin C, et al.

Validity of the Novel Taiwan Lymphoscintigraphy Staging and Correlation of Cheng Lymphedema Grading for Unilateral Extremity Lymphedema.

Annals of Surgery. 2018;268:513–525.

https://drive.google.com/file/d/1Cq4XvFBLoVOtK3GjTv2glo23cURFXc-1/view?usp=sharing

Patients who wish to explore the scientific background of their diagnosis and treatment planning 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 valuable 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, objective staging systems, and individualized clinical judgment, our goal is to help each patient make informed decisions with confidence.

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

 

 

【Frequently Asked Questions (FAQ)】

Taiwan Lymphoscintigraphy Staging and Lymphedema Care

 

Q1. What is lymphoscintigraphy, and why is it important for lymphedema?

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

A small amount of 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 diagnostic test for lymphedema, providing a comprehensive assessment of lymphatic function that cannot be obtained through physical examination alone.

 

 

Q2. What does the Taiwan Lymphoscintigraphy Staging system evaluate?

The Taiwan Lymphoscintigraphy Staging system classifies imaging findings into seven stages (L-0 to T-6) based on:

Visualization of proximal lymph nodes

Presence or absence of lymphatic ducts

Degree and distribution of dermal backflow

Overall severity of lymphatic obstruction

This structured staging allows clinicians to objectively assess the severity of lymphatic dysfunction.

 

 

Q3. How does this research help guide treatment decisions?

This study demonstrated that lymphoscintigraphy stages correlate strongly with:

Limb swelling severity

CT-based volumetric differences

Frequency of cellulitis (skin infections)

When combined with objective clinical grading, the staging system helps clinicians select the most appropriate treatment approach, whether conservative therapy, microsurgery, or a combination of both.

 

 

Q4. Does a more advanced stage always mean surgery is required?

No.

Imaging stage alone does not determine treatment.

The study emphasizes that treatment decisions should be based on a comprehensive evaluation, including imaging findings, clinical symptoms, daily functional impact, and patient preferences.

Some patients achieve stable symptom control with conservative therapy alone, while others may benefit from surgical options.

 

 

Q5. What is lymphaticovenular anastomosis (LVA), and when is it considered?

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

LVA may be considered when:

Some functional lymphatic vessels remain

Imaging suggests partial lymphatic obstruction

However, LVA is not suitable for all patients, and careful selection is essential.

 

 

Q6. How does Lymphedema Clinic Tokyo use this research in daily practice?

At Lymphedema Clinic Tokyo, we integrate the principles of this study into routine clinical care.

We combine:

Lymphoscintigraphy

Ultrasound and ICG lymphography

Clinical symptoms and patient goals

to develop individualized treatment plans that may include conservative therapy, same-day LVA surgery, or a thoughtful combination of both.

 

 

Q7. Is conservative treatment still important if surgery is an option?

Yes.

Conservative treatment—such as compression therapy, skincare, and exercise—remains the foundation of lymphedema care.

Even when surgery is considered, conservative management often continues before and after treatment to support long-term stability and safety.

 

 

Q8. Can patients read the original research article themselves?

Yes.

While the article is written for medical professionals, patients interested in understanding the scientific background of their diagnosis and treatment planning may find it informative.

Reference:

Cheng MH, Pappalardo M, Lin C, et al.

Validity of the Novel Taiwan Lymphoscintigraphy Staging and Correlation of Cheng Lymphedema Grading for Unilateral Extremity Lymphedema.

Annals of Surgery. 2018;268:513–525.

 

 

Q9. Are there other research studies recommended by your clinic?

Yes.

We regularly review and introduce carefully selected international research that we believe is valuable 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?

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