Treatments for Breast Cancer

Introduction

Breast cancer occurs when abnormal cells in the breast multiply uncontrollably, forming a lump or mass. It is one of the most common cancers among women but can be effectively managed — and often cured — with early diagnosis and comprehensive care.

With the right breast cancer treatment in Singapore, patients can achieve improved quality of life and reduced recurrence risk. Depending on the type and stage, treatment may include breast cancer surgery, chemotherapy, radiation, hormone treatment or targeted therapy.

Treatment Goals

When beginning a breast cancer therapy plan, clear goals help patients and specialists focus on the best outcomes.

A good plan aims to:

  • Remove or destroy cancerous tissue
  • Prevent cancer from spreading or returning
  • Relieve symptoms and restore comfort
  • Preserve breast appearance and body confidence whenever possible
  • Support overall health and emotional well-being

Types of Treatments

There is no single breast cancer treatment suitable for every patient. The treatment approach depends on the cancer’s type, stage, hormone receptor status and overall health. Each subtype requires a different combination of therapies to remove or destroy cancer cells, prevent recurrence and preserve breast appearance and function.

Below are the main types of treatments for breast cancer, tailored to specific cancer types.

1. Ductal Carcinoma in Situ (DCIS)

Ductal Carcinoma in Situ is a non-invasive, early-stage cancer confined to the milk ducts.

  • Surgery: A lumpectomy (breast-conserving surgery) is commonly performed to remove abnormal cells while preserving breast shape. In some cases, a mastectomy may be recommended if DCIS is widespread.
  • Radiation Therapy: Post-surgical radiation and breast cancer therapy help eliminate residual cancer cells and reduce recurrence risk.
  • Hormone Therapy: For hormone receptor-positive DCIS, tamoxifen or aromatase inhibitors are prescribed as hormone treatment for breast cancer to prevent recurrence.

2. Invasive Ductal Carcinoma (IDC)

The most common type of breast cancer, IDC, requires a combination of local and systemic therapies depending on tumour size and spread.

  • Surgery: Options include lumpectomy or mastectomy, sometimes accompanied by lymph node removal.
  • Chemotherapy: Given before (neoadjuvant) or after (adjuvant) surgery to shrink tumours and destroy remaining cancer cells. Common chemo medicines for breast cancer include doxorubicin, cyclophosphamide and paclitaxel.
  • Radiation Therapy: Reduces local recurrence after surgery, especially following lumpectomy.
  • Hormone and Targeted Therapy: Specific drugs improve outcomes for hormone receptor-positive or HER2-positive subtypes.
  • Breast Cancer Surgery Recovery: Physical therapy and post-operative care help restore movement and comfort.

3. Invasive Lobular Carcinoma (ILC)

Invasive Lobular Carcinoma grows in subtle patterns, making early detection challenging. Treatment typically involves both local and systemic therapies.

  • Surgery: Lumpectomy or mastectomy remains the mainstay of treatment.
  • Hormone Therapy: Most ILCs are hormone receptor-positive; thus, hormone treatment for breast cancer, such as tamoxifen or letrozole, is often used to reduce recurrence risk.
  • Chemotherapy: Recommended for higher-grade or advanced cases.
  • Targeted Therapy: HER2-targeted medications may be added if the tumour expresses HER2 protein.

4. Inflammatory Breast Cancer (IBC)

A rare, aggressive cancer that progresses rapidly and requires urgent, coordinated care.

  • Chemotherapy: The first step in therapy for breast cancer involves inflammation, aiming to shrink the tumour and control spread before surgery.
  • Surgery: Modified radical mastectomy removes the affected breast and lymph nodes.
  • Radiation Therapy: Administered after surgery to target residual cancer cells in the chest wall and lymph nodes.
  • Targeted Therapy: For HER2-positive IBC, trastuzumab and pertuzumab are added to chemotherapy.

5. Paget’s Disease of the Breast

This form primarily affects the nipple and areola, often linked to an underlying ductal carcinoma.

  • Surgery: Depending on the extent, treatment may involve lumpectomy with nipple removal or mastectomy.
  • Radiation Therapy: Used post-surgery to destroy remaining cancerous tissue.
  • Hormone or Targeted Therapy: Applied if the underlying tumour is hormone receptor-positive or HER2-positive.

6. Triple-Negative Breast Cancer (TNBC)

A fast-growing, high-risk subtype that lacks hormone and HER2 receptors, making it resistant to conventional hormonal and targeted treatments.

  • Chemotherapy: Drugs such as carboplatin and paclitaxel are effective against TNBC.
  • Immunotherapy: Recent advances include drugs like pembrolizumab, which stimulate the immune system to attack cancer cells.
  • Surgery: Lumpectomy or mastectomy is performed after chemotherapy.
  • Radiation Therapy: Reduces the chance of local recurrence post-surgery.

7. HER2-Positive Breast Cancer

This type involves overproduction of the HER2 protein, which fuels tumour growth but responds well to targeted therapy.

  • Targeted Therapy: HER2-blocking agents such as trastuzumab (Herceptin), pertuzumab or neratinib form the foundation of treatment.
  • Chemotherapy: Often combined with targeted drugs for enhanced tumour response.
  • Surgery: Typically follows neoadjuvant therapy to remove any remaining tumour.
  • Radiation and Hormone Therapy: May be added depending on tumour characteristics.

8. Supportive and Rehabilitative Care

No matter the type of breast cancer, supportive care is integral to recovery.

  • Physical Rehabilitation: Restores arm mobility and reduces swelling after breast cancer surgery.
  • Psychological Counselling: Helps patients cope emotionally with diagnosis and treatment.
  • Nutritional Guidance: Supports healing and energy restoration during radiation and breast cancer therapies.
  • Regular Screening: Ongoing monitoring using a breast cancer risk assessment tool and imaging tests helps support early detection of recurrence and promotes long-term wellness.

Benefits of Breast Cancer Treatment

An effective therapy for breast cancer offers multiple benefits, including:

  • Elimination or control of the tumour
  • Reduced risk of cancer returning or spreading
  • Relief from pain, swelling or pressure symptoms
  • Improved breast appearance and confidence through reconstruction
  • Better long-term survival and quality of life

Early detection through regular breast cancer check-ups allows for timely treatment, which can make procedures less invasive and promote a smoother, faster recovery.

The Treatment Process

Understanding what to expect can make the journey feel more manageable.

Assessment
Your specialist reviews your symptoms, performs physical exams, and orders imaging, such as a mammogram or an MRI, to confirm the diagnosis

Planning
A personalised treatment plan is created based on tumour stage, hormone receptor status and patient preferences

Treatment
This may include surgery, hormone treatment or chemotherapy

Monitoring
Follow-up appointments and imaging ensure the treatment is working and detect any signs of recurrence early

Side Effects & Management

Common treatment side effects may include:

  • Chemotherapy: Fatigue, hair loss, nausea or lowered immunity — most of which are temporary and manageable with supportive care
  • Radiation Therapy: Mild skin irritation, redness or swelling in the treated area
  • Hormone Therapy: Hot flashes, mood fluctuations or joint discomfort due to changes in hormone levels

Strategies to manage side effects include maintaining balanced nutrition, adequate hydration and sufficient rest to support recovery. Regular communication with your breast cancer specialist ensures timely adjustments to medications and symptom relief plans.

Physiotherapy helps restore strength and shoulder mobility after surgery or radiation, while psychological counselling and support groups provide emotional guidance and coping tools.

Prognosis and Outlook

The breast cancer cure rate has risen significantly with advancements in modern treatment. Many women now go on to lead long and healthy lives after diagnosis, particularly when the disease is detected and treated early. Prognosis depends on tumour stage, genetic profile and response to treatment. Regular check-ups, healthy lifestyle habits, and adherence to therapy reduce recurrence risk.

Visit our main Breast Cancer page to understand causes, symptoms and diagnostic options.

Breast Cancer Treatment Options in Singapore

Solutions Available

Patients seeking breast cancer treatment can access a comprehensive range of therapies, including breast cancer surgery, hormone treatment and chemotherapy. Treatment is tailored based on cancer type, stage, hormone receptor status and overall health. 

Early-stage cancers are often managed with breast-conserving surgery (lumpectomy) or mastectomy, followed by chemotherapy or radiation to destroy remaining cancer cells. Targeted therapies and immunotherapy are also available for specific tumour profiles.

Relevant Specialists/Surgeons

Breast cancer therapy in Singapore is coordinated by a multidisciplinary team dedicated to providing comprehensive and individualised care. The breast cancer surgeon plays a central role in diagnosis and surgical management, performing procedures such as lumpectomy or mastectomy to remove cancerous tissue while preserving as much healthy breast tissue as possible.

Following tumour removal, a plastic and reconstructive surgeon may be involved to restore breast shape and symmetry through reconstruction, helping patients regain confidence and comfort after surgery. Medical and radiation oncologists oversee systemic treatments — including chemotherapy for breast cancer, hormone therapy and targeted therapy — to prevent recurrence and control disease spread.

Benefits and Expected Recovery

Timely breast cancer treatment in Singapore offers the best chance for remission, improved survival rates and enhanced quality of life. Many patients experience full recovery following early detection and combined therapies. Surgical and radiation advances have reduced side effects and improved cosmetic outcomes.

Post-treatment recovery focuses on restoring physical strength, managing fatigue and monitoring long-term complications, such as the side effects of radiation. With continued follow-up, most patients return to normal activities while maintaining regular screenings to detect recurrence early.

Step-by-Step Process

The treatment journey begins with diagnostic imaging—such as a mammogram, breast cancer ultrasound or biopsy—to confirm the diagnosis and determine tumour characteristics. Once confirmed, the multidisciplinary team designs a personalised treatment plan, which may include surgery, chemotherapy or radiation therapy.

For those undergoing surgery, options for breast reconstruction after cancer are discussed early in the process. Reconstruction, performed by a plastic and reconstructive surgeon, can restore breast shape and symmetry, supporting both physical recovery and emotional well-being.

After surgery or systemic therapy, follow-up imaging and physical therapy help monitor healing, restore movement and reduce complications. Ongoing follow-up ensures early detection of recurrence, while long-term therapy for breast cancer focuses on maintaining health, confidence and overall quality of life.

Find a Breast Cancer Specialist in Singapore

You do not have to navigate breast cancer treatment alone. A trusted specialist can help you understand your diagnosis, review your options and guide you through every step of recovery.

An experienced breast cancer specialist or surgeon will:

  • Review your imaging and biopsy results
  • Recommend safe and effective treatment options
  • Coordinate surgery, chemotherapy or radiation plans
  • Provide ongoing follow-up and emotional support

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