Breast Surgery Practice Questions

Q: What is the most sensitive and specific investigation for carcinoma breast?

Mammography. **Explanation:** **Mammography** is the gold standard and the most sensitive and specific investigation for the detection of breast carcinoma, especially in women over the age of 35. Its primary strength lies in its ability to detect **microcalcifications** and soft tissue masses before they become clinically palpable. For screening purposes, it has a sensitivity of approximately 85–90%. **Analysis of Options:** * **CT Scan:** While useful for staging (detecting distant metastasis to lungs or liver), it is not used for primary breast imaging due to poor resolution of breast parenchyma and high radiation exposure. * **Thermography:** This measures infrared heat patterns. It has a very high false-positive rate and lacks the specificity required for diagnosis; it is currently not recommended in standard clinical practice. * **USG (Ultrasonography):** This is the investigation of choice for women **under 35 years** (due to dense breast tissue) and for differentiating cystic from solid lesions. However, it is less sensitive than mammography for detecting early microcalcifications. **Clinical Pearls for NEET-PG:** * **Triple Assessment:** The definitive protocol for diagnosing a breast lump includes: 1. Clinical Examination, 2. Imaging (Mammography/USG), and 3. Pathology (FNAC/Core Needle Biopsy). * **BI-RADS Score:** Mammography results are reported using the Breast Imaging-Reporting and Data System (0-6 scale). * **MRI Breast:** Though more sensitive than mammography, it is less specific. It is the investigation of choice for screening high-risk patients (BRCA mutations), evaluating breast implants, or detecting occult primary tumors. * **Best Diagnostic Investigation:** While mammography is the best *imaging*, the "Gold Standard" for definitive diagnosis remains **Core Needle Biopsy**.

Q: Which of the following is the most important prognostic factor in breast cancer?

Stage of the tumor at the time of diagnosis. **Explanation:** In breast cancer, the **Stage of the tumor** (determined by the TNM classification) is the most important overall prognostic factor. Staging incorporates the size of the primary tumor (T), the presence and extent of regional lymph node involvement (N), and distant metastasis (M). Among these, **axillary lymph node status** is specifically recognized as the single most important *individual* prognostic factor within the staging system. Patients with node-negative disease have a significantly higher 10-year survival rate compared to those with nodal involvement. **Analysis of Incorrect Options:** * **A. Histological grade:** While the Bloom-Richardson grade (assessing tubule formation, nuclear pleomorphism, and mitotic count) provides insight into the tumor's aggressiveness, it is secondary to the anatomical extent (stage) of the disease. * **C. Receptor status (ER/PR):** These are primarily **predictive factors** used to determine the likelihood of response to hormonal therapy (e.g., Tamoxifen). While Triple Negative Breast Cancer (TNBC) has a poorer prognosis, receptor status alone does not outweigh the stage. * **D. p-53 Overexpression:** This is a molecular marker associated with poor differentiation and a more aggressive clinical course, but it remains a minor prognostic indicator compared to clinical staging. **NEET-PG High-Yield Pearls:** * **Most important prognostic factor:** Stage of the tumor. * **Most important individual prognostic factor:** Axillary lymph node status. * **Most common site of distant metastasis:** Bone (specifically the lumbar spine via Batson’s plexus). * **Most important factor for recurrence:** Number of positive axillary nodes. * **HER2/neu:** A predictive marker for response to Trastuzumab (Herceptin).

Q: Male breast carcinoma is usually associated with which of the following genetic mutations?

BRCA2. **Explanation:** Male breast carcinoma is a rare malignancy, accounting for less than 1% of all breast cancer cases. The most significant genetic risk factor identified for male breast cancer is a germline mutation in the **BRCA2** gene. 1. **Why BRCA2 is Correct:** While BRCA1 and BRCA2 are both tumor suppressor genes involved in DNA repair, their association with male breast cancer differs significantly. Men with a **BRCA2 mutation** have a cumulative lifetime risk of developing breast cancer of approximately **6–8%** (nearly an 80-fold increase compared to the general population). In contrast, BRCA1 mutations carry a much lower lifetime risk (around 1%) for males. 2. **Why Other Options are Incorrect:** * **BRCA1:** Primarily associated with early-onset female breast cancer and epithelial ovarian cancer. Its association with male breast cancer is weak. * **STK11 (often mislabeled as STK1):** Mutations in the *STK11* gene cause **Peutz-Jeghers Syndrome**. While this syndrome increases the risk of various cancers (including female breast cancer), it is not the primary genetic driver for male breast carcinoma. * **STK2:** This is not a recognized high-yield genetic marker associated with breast cancer syndromes in standard surgical pathology. **High-Yield Clinical Pearls for NEET-PG:** * **Most common histological type:** Invasive Ductal Carcinoma (IDC) is the most common. Lobular carcinoma is extremely rare in men due to the lack of acini. * **Receptor Status:** Male breast cancers are more likely to be **Estrogen Receptor (ER) positive** than female breast cancers. * **Risk Factors:** Klinefelter syndrome (47, XXY) is the strongest non-genetic risk factor (associated with a 20-50 fold increase in risk). * **Presentation:** Usually presents as a painless subareolar mass, often at a later stage due to lack of screening and awareness.

Q: In Radical mastectomy, which of the following is spared?

Supraclavicular lymph nodes. In breast surgery, understanding the anatomical extent of different types of mastectomies is high-yield for NEET-PG. ### **Explanation of the Correct Answer** The question refers to the **Halsted Radical Mastectomy (RM)**. By definition, this procedure involves the en-bloc removal of the entire breast tissue, the overlying skin, the **pectoralis major**, the **pectoralis minor**, and the **axillary lymph nodes** (Levels I, II, and III). **Supraclavicular lymph nodes (Option D)** are considered Level IV nodes. In the staging of breast cancer (AJM/TNM), involvement of supraclavicular nodes is classified as **N3c (Stage IIIC)** and is traditionally viewed as regional spread that is beyond the scope of standard radical surgery. These nodes are **not** part of a Radical Mastectomy. ### **Analysis of Incorrect Options** * **A. Pectoralis major:** This is the hallmark of the Halsted Radical Mastectomy. It is removed to ensure a deep clear margin and to facilitate access to the apex of the axilla. * **B. Pectoralis minor:** This is also removed in a Radical Mastectomy to allow complete clearance of the Level II and III axillary lymph nodes. (Note: In a *Modified* Radical Mastectomy, this muscle is either retracted or divided, but not necessarily removed). * **C. Axillary lymph nodes:** Complete axillary dissection (Levels I-III) is a mandatory component of any radical surgical approach for breast cancer. ### **High-Yield Clinical Pearls for NEET-PG** * **Halsted Radical Mastectomy:** Removes Breast + Both Pectorals + Axillary nodes. * **Patey’s Modified Radical Mastectomy (MRM):** Removes Breast + **Pectoralis minor** + Axillary nodes (Pectoralis major is **spared**). * **Auchincloss MRM:** Removes Breast + Axillary nodes (Both Pectoralis major and minor are **spared**). * **Nerves at risk during surgery:** Long thoracic nerve (Serratus anterior - Winging of scapula) and Thoracodorsal nerve (Latissimus dorsi).

Q: Radiotherapy after mastectomy would not be required in which of the following case scenarios of breast cancer?

Metastasis. ### Explanation The primary goal of **Post-Mastectomy Radiotherapy (PMRT)** is **locoregional control**. It is indicated when there is a high risk of local recurrence at the chest wall or regional lymph nodes. **Why "Metastasis" is the correct answer:** In the presence of **distant metastasis (Stage IV disease)**, the treatment intent shifts from curative to **palliative**. While radiotherapy may be used palliatively to treat painful bone metastases or brain lesions, it is not a standard "post-mastectomy" requirement for local control. The management of metastatic disease is primarily systemic (chemotherapy, hormonal therapy, or targeted therapy). **Analysis of Incorrect Options:** * **Large Tumor (Option A):** Tumors >5 cm (T3) or those involving the skin/chest wall (T4) have a high risk of local recurrence, necessitating PMRT. * **Axillary Nodal Involvement (Option B):** Presence of 4 or more positive nodes is a definitive indication for PMRT. Many centers also consider it for 1–3 positive nodes depending on other risk factors. * **Positive Margins (Option D):** If surgical margins are involved by the tumor and cannot be re-excised, radiotherapy is mandatory to sterilize the remaining microscopic disease. **NEET-PG High-Yield Pearls:** * **Standard Indications for PMRT:** 1. Tumor size **>5 cm (T3)**. 2. **4 or more** positive axillary lymph nodes (N2). 3. **Positive or close (<2mm) resection margins**. 4. Skin or chest wall involvement (**T4**). * **Goal:** PMRT reduces the risk of local recurrence by approximately two-thirds and provides a modest improvement in overall survival in high-risk patients. * **Sequence:** Usually administered *after* adjuvant chemotherapy but *before* or *during* hormonal therapy.

Q: A 45-year-old patient presents with greenish discharge from the breast and a tender mass below the areolar tissue. Which of the following is true about this condition?

Associated with smoking. **Explanation:** The clinical presentation of **greenish nipple discharge** and a **tender subareolar mass** in a 45-year-old patient is characteristic of **Mammary Duct Ectasia** (also known as Periductal Mastitis). **1. Why Option A is Correct:** Smoking is the most significant risk factor for periductal mastitis. Components in cigarette smoke (like cotinine) cause direct damage to the subareolar duct epithelium and lead to anaerobic infections. This results in periductal inflammation, ductal dilatation (ectasia), and the accumulation of thick, stagnant secretions that appear green or "cheesy." **2. Why the other options are Incorrect:** * **Option B:** There is no established clinical association between alcohol intake and the pathogenesis of duct ectasia. * **Option C:** While it can present unilaterally, duct ectasia is frequently **bilateral**. It is a degenerative process of the lactiferous ducts that often affects both breasts simultaneously. * **Option D:** Unlike an Intraductal Papilloma (which typically involves a single duct and causes bloody discharge), duct ectasia usually involves **multiple ducts**. **Clinical Pearls for NEET-PG:** * **Discharge Characteristics:** The discharge is typically thick, multi-colored (green, brown, or creamy), and originates from multiple ducts. * **Physical Exam:** May reveal a "slit-like" nipple retraction (due to fibrosis) and a doughy subareolar mass. * **Complications:** Can lead to **Zuska’s Disease** (recurrent subareolar abscesses) or a mammary fistula. * **Management:** Smoking cessation is crucial. Surgical management involves **Hadfield’s operation** (Total Subareolar Duct Excision). * **Differential:** Must be differentiated from malignancy; however, the presence of greenish discharge and tenderness strongly points toward ectasia.

Question 1

Best prognosis amongst the following histological variants of breast carcinoma is seen with:

Accepted Answer

Colloid (Mucinous)

Answer

Intraductal

Answer

Lobular

Answer

Medullary

Question 2

What is the most sensitive and specific investigation for carcinoma breast?

Accepted Answer

Mammography

Answer

CT scan

Answer

Thermography

Answer

USG

Question 3

On which of the following does prognosis in male breast cancer depend?

Accepted Answer

Lymph node status

Answer

Duration of disease

Answer

Nipple discharge

Answer

Ulceration of nipple

Question 4

Which of the following is the most important prognostic factor in breast cancer?

Accepted Answer

Stage of the tumor at the time of diagnosis

Answer

Histological grade of the tumor

Answer

Status of estrogen and progesterone receptors

Answer

Overexpression of p-53 tumor suppressor gene

Question 5

Male breast carcinoma is usually associated with which of the following genetic mutations?

Accepted Answer

BRCA2

Answer

BRCA1

Answer

STK1

Answer

STK2

Question 6

In Radical mastectomy, which of the following is spared?

Accepted Answer

Supraclavicular lymph nodes

Answer

Pectorialis major

Answer

Pectoralis minor

Answer

Axillary lymph nodes

Question 7

A female patient presents with a hard, mobile lump in her right breast. Which investigation would be most helpful in making the diagnosis?

Accepted Answer

Excision biopsy

Answer

Fine Needle Aspiration Cytology (FNAC)

Answer

Needle biopsy

Answer

Mammography

Question 8

Radiotherapy after mastectomy would not be required in which of the following case scenarios of breast cancer?

Accepted Answer

Metastasis

Answer

Large tumor

Answer

Axillary nodal involvement

Answer

Positive margins

Question 9

A 45-year-old patient presents with greenish discharge from the breast and a tender mass below the areolar tissue. Which of the following is true about this condition?

Accepted Answer

Associated with smoking

Answer

Associated with alcohol intake

Answer

Always unilateral

Answer

Single duct is involved

Question 10

A 45-year-old woman presents with a hard and mobile lump in the breast. What is the next investigation?

Accepted Answer

Fine Needle Aspiration Cytology (FNAC)

Answer

Ultrasonography (USG)

Answer

Mammography

Answer

Excision biopsy

Breast Surgery — MCQs

Breast Surgery — MCQs

On this page

Practice by Chapter

Want unlimited practice?