[카테고리:] Breast Imaging

Finding a breast mass during pregnancy can be frightening.

Hormonal changes cause significant breast enlargement and structural changes, making lumps more noticeable.

However, not all breast lumps during pregnancy are dangerous.

Understanding what is common and what requires evaluation helps reduce unnecessary anxiety.

Why Do Breast Lumps Appear During Pregnancy?

Pregnancy causes:

• Increased glandular tissue
• Milk duct proliferation
• Increased blood flow
• Breast enlargement

These changes can make pre-existing masses more noticeable or lead to new benign findings.

Common Causes of Breast Mass During Pregnancy

1️⃣ Fibroadenoma

• Hormone-sensitive
• May enlarge during pregnancy
• Typically oval and well-circumscribed on ultrasound

2️⃣ Lactating Adenoma

• Common in late pregnancy and breastfeeding
• Benign
• Often well-defined and hypervascular

3️⃣ Galactocele

• Milk-filled cyst
• Often occurs postpartum
• May show internal echoes on ultrasound

Can Breast Cancer Occur During Pregnancy?

Yes — although rare, pregnancy-associated breast cancer does occur.

Warning signs include:

• Irregular margins
• Rapid progressive growth
• Skin thickening
• Axillary lymphadenopathy

Persistent solid masses should not be ignored.

Is Ultrasound Safe During Pregnancy?

Yes.

Breast ultrasound is safe during pregnancy because it:

• Uses no radiation
• Provides detailed evaluation of solid vs cystic masses
• Guides biopsy when necessary

Mammography may be considered with shielding if clinically indicated.

When Is Biopsy Needed?

Biopsy is recommended if:

• Imaging features are suspicious
• The mass enlarges rapidly
• Clinical findings are concerning

Core needle biopsy is generally safe during pregnancy.

Early diagnosis is critical, even during pregnancy.

Counseling Perspective

Patients often assume:

“It’s pregnancy, so it must be hormonal.”

While many breast masses during pregnancy are benign, persistent or suspicious findings require evaluation.

Balanced reassurance with appropriate investigation is key.

Final Thoughts

A breast mass during pregnancy is common — but careful imaging evaluation is essential.

Most lesions are benign, but persistent or suspicious masses should be assessed promptly.

Pregnancy does not protect against breast cancer — early detection still matters.

Related Articles

Pregnancy-Associated Breast Cancer: Early Signs You Should Not Ignore

Is Chemotherapy Safe During Pregnancy? What Current Evidence Shows

Radiation Therapy During Pregnancy: Is It Ever Safe?

Discovering a rapidly growing breast mass can be alarming.

Many patients immediately fear cancer.

However, not all fast-growing breast lumps are malignant.

Understanding the causes, warning signs, and evaluation process is essential.

What Is Considered “Rapid Growth”?

A breast mass is considered rapidly growing when:

• Noticeable size increase occurs within weeks to months
• The lump becomes visibly larger between follow-up visits
• Growth exceeds 20% in 6 months on imaging

Documented interval growth is more important than subjective perception alone.

Common Causes of a Rapidly Growing Breast Mass

1️⃣ Fibroadenoma

• Common in younger women
• May enlarge due to hormonal stimulation
• Typically well-circumscribed and oval on ultrasound

Some fibroadenomas can grow quickly, especially during pregnancy.

2️⃣ Phyllodes Tumor

• Can grow rapidly
• Often larger at presentation (>3 cm)
• May show lobulated contour and heterogeneous echotexture

Phyllodes tumors require surgical excision due to recurrence risk.

3️⃣ Breast Cancer

Although less common than benign causes, malignancy must always be excluded.

Suspicious features include:

• Irregular margins
• Non-parallel orientation
• Posterior shadowing
• Increased internal vascularity
• Associated skin or nipple changes

Rapid growth combined with suspicious imaging findings increases concern.

When Is Biopsy Recommended?

Biopsy should be considered if:

• Rapid interval growth is confirmed
• Imaging features are atypical
• Patient is older than typical fibroadenoma age range
• Clinical concern persists despite benign appearance

Core needle biopsy provides tissue diagnosis and guides management.

Ultrasound Evaluation Matters

Ultrasound helps assess:

• Shape and margins
• Internal echo pattern
• Vascularity
• Relationship to surrounding tissue

Growth pattern over time is often more informative than a single scan.

Counseling Perspective

Hearing “rapidly growing breast mass” can cause intense anxiety.

It is important to explain:

• Many fast-growing masses are benign
• Imaging characteristics guide risk assessment
• Biopsy is performed when necessary for safety

Clear communication reduces panic while ensuring appropriate action.

Final Thoughts

A rapidly growing breast mass does not automatically mean cancer.

Careful imaging evaluation, interval comparison, and biopsy when indicated provide clarity.

Monitoring growth patterns — not just size — is key.

When a solid breast mass is detected on ultrasound, one of the most common questions is:

Is this a fibroadenoma or a phyllodes tumor?

Although both may appear similar, accurate differentiation is essential because management differs significantly.

What Is a Fibroadenoma?

Fibroadenoma is the most common benign solid breast tumor, especially in younger women.

Typical ultrasound features:

• Oval shape
• Circumscribed margins
• Parallel orientation
• Homogeneous hypoechoic texture
• Minimal internal vascularity

Most fibroadenomas are stable and may not require biopsy if classic features are present.

What Is a Phyllodes Tumor?

Phyllodes tumors are rare fibroepithelial tumors that can be:

• Benign
• Borderline
• Malignant

They tend to grow more rapidly and may require surgical excision.

Ultrasound Differences: Fibroadenoma vs Phyllodes Tumor

Although imaging overlap exists, certain features raise suspicion for phyllodes tumor:

🔎 Rapid Growth

Phyllodes tumors often enlarge quickly over months.

🔎 Larger Size

Lesions >3–4 cm raise suspicion, especially with interval growth.

🔎 Lobulated Contour

More pronounced lobulation compared to typical fibroadenoma.

🔎 Heterogeneous Internal Echo Pattern

Cystic spaces or clefts may be visible within the mass.

🔎 Increased Internal Vascularity

More prominent Doppler flow may be seen.

However, imaging alone cannot always definitively distinguish the two.

When Is Biopsy Recommended?

Biopsy should be considered when:

• Rapid size increase is documented
• Atypical imaging features are present
• Patient age is older than typical fibroadenoma population
• Clinical suspicion persists

Core needle biopsy helps guide management, but excision may still be recommended if phyllodes tumor is suspected.

Why Differentiation Matters

Fibroadenomas often require:

• Observation
• Periodic follow-up

Phyllodes tumors may require:

• Wide surgical excision
• Margin evaluation
• Close postoperative monitoring

Correct diagnosis impacts surgical planning and recurrence risk.

Counseling Perspective

When discussing a solid breast mass, clarity is important.

Instead of saying:

“It could be a tumor.”

Explain:

“Most solid masses in younger women are benign fibroadenomas. We monitor for stability. If the lesion shows rapid growth or atypical features, we recommend biopsy.”

Balanced counseling reduces unnecessary fear while ensuring timely action.

Final Thoughts

Fibroadenoma vs phyllodes tumor differentiation can be challenging on ultrasound.

Growth pattern, internal characteristics, and clinical context guide decision-making — but biopsy remains the definitive diagnostic tool when uncertainty exists.

유방 Cyst, 초음파에서 이렇게 보입니다

유방 초음파를 하다 보면

“물혹이 보이네요.”라는 말을 듣고

많이 놀라시는 분들이 있습니다.

가장 많이 하시는 질문은 이것입니다.

“혹시 암인가요?”

결론부터 말씀드리면,

대부분의 단순 유방 Cyst(물혹) 는

양성 병변이며 위험하지 않습니다.

유방 Cyst란 무엇인가요?

유방 Cyst는

유방 조직 안에 생긴 액체가 찬 주머니입니다.

주로 30–50대 여성에서 흔하며

호르몬 변화와 관련이 있는 경우가 많습니다.

만져질 수도 있고,

우연히 초음파에서 발견되기도 합니다.

초음파에서 단순 Cyst는 이렇게 보입니다

단순 Cyst의 전형적인 초음파 소견은 다음과 같습니다:

✔ 내부가 까맣게 보임 (Anechoic)

✔ 벽이 얇고 매끄러움

✔ 내부에 고형 성분 없음

✔ 뒤쪽 음향 증강 (Posterior acoustic enhancement)

이 네 가지가 명확하면

대부분 양성으로 판단합니다.

그렇다면 조직검사가 필요한가요?

👉 단순 Cyst는 조직검사가 필요하지 않습니다.

다만 다음과 같은 경우는 추가 평가가 필요합니다.

• 내부에 찌꺼기처럼 보이는 에코가 있을 때
• 벽이 두껍거나 불규칙할 때
• 고형 성분이 의심될 때
• 혈류가 보일 때

이 경우는

Complicated cyst 또는 Complex cyst로 분류되며

추적관찰 또는 조직검사를 고려합니다.

물혹이 암으로 변하나요?

단순 Cyst가 암으로 변하는 경우는 매우 드뭅니다.

오히려

유방 통증이나 불편감을 유발하는 경우가 더 많습니다.

통증이 심하면

주사로 흡인해 내용물을 제거하기도 합니다.

정리하면

초음파 소견이 가장 중요합니다.

대부분의 유방 물혹은 양성입니다.

단순 Cyst는 조직검사가 필요하지 않습니다.

함께 보면 좋은 글

Breast Ultrasound: What Is a Simple Cyst?

Breast Ultrasound: Simple Cyst vs. Complicated Cyst

“Do I need treatment?”

Many women are told during a breast ultrasound that they have a cyst.

The word itself can sound scary.

But here is the reassuring truth:

👉 Most breast cysts are not cancer.

💬 What is a breast cyst?

A breast cyst is a fluid-filled sac inside the breast.

It is very common, especially in women in their 30s to 50s.

Hormonal changes often play a role.

Think of it like a small water balloon inside the breast tissue.

🔎 How do we know it’s just a cyst?

On ultrasound, a simple cyst looks:

• Completely black (fluid)
• Smooth and round
• Thin outer wall
• No solid part inside

If it looks like this,

✅ It is considered benign

✅ No treatment is needed

🟡 When do we follow up?

Sometimes a cyst contains a little debris inside.

This is called a complicated cyst.

In that case:

• We may recommend a follow-up ultrasound in 6 months
• It still does NOT automatically mean cancer

🔴 When is biopsy needed?

Biopsy is only recommended if:

• There is a solid component
• The wall is thick or irregular
• Blood flow is seen inside
• The shape looks suspicious

This is uncommon.

💉 Is aspiration necessary?

Only if:

• The cyst is painful
• It is large and uncomfortable
• The patient wants relief

Aspiration is a simple procedure done with a small needle.

Many cysts disappear on their own.

🌿 Final reassurance

Hearing “you have a cyst” can be stressful.

But in most cases:

✔ It is common

✔ It is benign

✔ It does not require treatment

Ultrasound helps us clearly differentiate a simple cyst from something that needs further evaluation.

If you are unsure about your report,

ask your doctor to explain the ultrasound findings.

Related Articles

물혹인가요?

What’s the Difference?

👩‍⚕️ “조직검사라는데… 맘모톰으로 한다고 해요.”

유방 조직검사는 크게 두 가지가 있습니다:

1️⃣ Core Needle Biopsy (일반 조직검사)

2️⃣ Vacuum-Assisted Biopsy, 흔히 ‘맘모톰’

두 검사 모두

초음파 유도하에 시행되며

국소 마취로 진행됩니다.

🩺 1️⃣ Core Needle Biopsy (일반 조직검사)

✔ 비교적 가는 바늘 사용

✔ 여러 번 찔러 조직 채취

✔ 보통 3–5회 채취

✔ 진단 목적

📌 작은 종괴

📌 단순히 진단이 필요한 경우

많이 사용됩니다.

🩺 2️⃣ Mammotome (Vacuum-Assisted Biopsy)

✔ 더 굵은 바늘

✔ 한 번 삽입 후 여러 조직 채취

✔ 진단 + 부분 제거 가능

✔ 비교적 큰 조직 확보

📌 양성 종괴 제거 목적

📌 작은 섬유선종 제거

📌 조직을 더 많이 확보해야 할 때

🌿 한눈에 비교

구분	Core Biopsy	Mammotome
바늘 굵기	비교적 얇음	더 굵음
조직 채취방식	여러번 삽입	한번 삽입 후 반복 채취
목적	진단	진단 제거
흉터	작음	조금 더 큼
시술 시간	짧음	약간 더 김

❓ 더 아픈가요?

맘모톰은 바늘이 더 굵지만

마취 후 진행되기 때문에

통증 차이는 크지 않습니다.

다만

맘모톰은 시술 시간이 조금 더 길고

멍이 더 생길 수 있습니다.

⚠️ 언제 어떤 검사를 선택하나요?

✔ 단순히 암 여부 확인 → Core biopsy

✔ 양성 종괴 제거 목적 → Mammotome

✔ 비교적 큰 조직 필요 → Mammotome

의사가 병변 크기와 모양에 따라 결정합니다.

🌍 English Summary

Core needle biopsy uses a smaller needle and is primarily diagnostic.

Mammotome (vacuum-assisted biopsy) uses a larger needle and allows removal of more tissue, sometimes partially excising benign lesions.

Both procedures are performed under local anesthesia and are generally well tolerated.

Does It Hurt?

👩‍⚕️ “조직검사, 많이 아픈가요?”

결론부터 말씀드리면,

👉 검사 자체는 대부분 참을 수 있는 정도의 통증입니다.

👉 하지만 긴장 때문에 더 무섭게 느껴질 수 있습니다.

🩺 검사 과정은 어떻게 진행되나요?

일반적인 유방 초음파 유도 조직검사(Core Needle Biopsy)는 다음 순서로 진행됩니다:

1️⃣ 국소 마취 주사

2️⃣ 작은 절개

3️⃣ 조직 채취 (몇 차례)

4️⃣ 지혈 및 압박

💉 가장 아픈 순간은?

대부분의 환자들이 말하는 건:

👉 마취 주사 들어갈 때가 제일 따끔합니다.

그 이후에는

압박감이나 “툭” 하는 느낌이 있지만

날카로운 통증은 거의 없습니다.

🩹 검사 후 통증은?

• 약간의 멍
• 묵직한 느낌
• 1–3일 정도 뻐근함

대부분 진통제 없이도 일상생활 가능합니다.

🌿 많이 걱정하는 부분

❓ “암이면 더 아픈가요?”

→ 아닙니다. 통증은 병변 성격과 직접적인 관련이 없습니다.

❓ “조직검사하면 암이 퍼지나요?”

→ 아닙니다. 현재 사용되는 코어 생검은 안전한 검사입니다.

👩‍⚕️ 현실적인 한 마디

긴장하면 더 아프게 느껴집니다.

검사 중에는 숨을 천천히 깊게 쉬는 것이 도움이 됩니다.

🌍 English Summary

Breast core needle biopsy is generally well tolerated.

The local anesthesia injection is usually the most uncomfortable part.

After that, patients may feel pressure rather than sharp pain.

Most people resume normal activities within a day.