Breast Surgery — MCQs

A 14-year-old healthy girl, with normal height and weight for her age, complains that her right breast has developed twice the size of her left breast since the onset of puberty at age 12. Both breasts have similar consistency on palpation with normal nipples and areolae. What is the most likely cause for these findings?

Q158Medium

A 50-year-old woman complains of intermittent bleeding from the left nipple over the past 3 months. No mass is palpable, but a bead of blood can be expressed from the nipple. What is the ideal procedure in this case?

Q159Medium

Carcinoma breast spread to the other breast is more common in which type of breast carcinoma?

Q160Easy

In the Patey procedure, what is done regarding the pectoralis muscles?

Breast Surgery Indian Medical PG Practice Questions and MCQs

Question 151: In patients with breast cancer, chest wall involvement means involvement of any one of the following structures except?

A. Serratus anterior
B. Pectoralis (Correct Answer)
C. Intercostal muscles
D. Rib

Explanation: In the TNM staging of breast cancer (AJCC 8th Edition), the definition of **T4b (Chest Wall Involvement)** is a critical high-yield concept for NEET-PG. ### **Explanation of the Correct Answer** The correct answer is **Pectoralis (Option B)**. In clinical staging, "chest wall involvement" specifically refers to the invasion of structures deep to the breast's posterior capsule. While the breast lies directly over the Pectoralis major muscle, invasion of the **Pectoralis major or minor muscles** does **not** constitute T4 disease or chest wall involvement. It is still staged based on the size of the tumor (T1, T2, or T3). ### **Analysis of Incorrect Options** According to the AJCC guidelines, chest wall involvement (T4a) is defined by the invasion of: * **Ribs (Option D):** Direct osseous invasion. * **Intercostal Muscles (Option C):** Invasion into the muscles between the ribs. * **Serratus Anterior (Option A):** Invasion into this muscle, which forms part of the medial wall of the axilla and deep boundary of the lateral breast. ### **Clinical Pearls for NEET-PG** * **T4a Definition:** Extension to the chest wall (ribs, intercostals, or serratus anterior). * **T4b Definition:** Edema (including peau d'orange), ulceration of the skin, or satellite skin nodules. * **T4c:** Both 4a and 4b. * **T4d:** Inflammatory carcinoma (a clinical diagnosis). * **Fixed to Pectoralis:** If a tumor is fixed to the pectoralis muscle but not the chest wall, it is **not** T4. This is a common "trap" question in surgical oncology. * **Management:** T4 tumors are generally considered Locally Advanced Breast Cancer (LABC) and typically require Neoadjuvant Chemotherapy (NACT) before surgical intervention.

Question 152: Prognosis of breast cancer is best determined by:

A. Axillary node involvement (Correct Answer)
B. Skin infiltration
C. Size of the tumour
D. Estrogen receptor status

Explanation: ### Explanation **1. Why Axillary Node Involvement is Correct:** In breast cancer, the **axillary lymph node status** is the **single most important prognostic factor** for recurrence and overall survival. The lymphatic system is the primary route for systemic dissemination. The number of involved nodes directly correlates with the risk of distant metastasis; for instance, patients with zero involved nodes have a significantly higher 10-year survival rate compared to those with four or more involved nodes. **2. Analysis of Incorrect Options:** * **B. Skin infiltration:** While skin involvement (T4 status) indicates advanced stage (Stage IIIB) and a poorer prognosis, it is not as statistically significant a predictor of long-term survival as nodal status. * **C. Size of the tumour:** Tumor size (T) is the second most important prognostic factor. While larger tumors generally have a higher risk of metastasis, a small tumor with positive nodes has a worse prognosis than a larger tumor with negative nodes. * **D. Estrogen receptor (ER) status:** This is a **predictive factor** rather than the primary prognostic factor. It helps determine the response to hormonal therapy (like Tamoxifen). While ER-positive status generally suggests a better short-term outcome, it does not override the prognostic weight of nodal involvement. **Clinical Pearls for NEET-PG:** * **Most important prognostic factor:** Axillary lymph node status. * **Second most important prognostic factor:** Tumor size. * **Sentinel Lymph Node Biopsy (SLNB):** The gold standard for axillary staging in clinically N0 (node-negative) patients. * **Nottingham Prognostic Index (NPI):** Uses tumor size, lymph node stage, and histological grade to calculate prognosis. * **Triple Negative Breast Cancer (TNBC):** Carries the worst prognosis among molecular subtypes due to the lack of targeted therapy options.

Question 153: Which of the following is a complication of post-mastectomy lymph accumulation?

A. Metastases of cancer
B. Recurrence of cancer
C. Lymphosarcoma (Correct Answer)
D. Pain

Explanation: **Explanation:** The correct answer is **Lymphosarcoma**, specifically referring to **Stewart-Treves Syndrome**. **1. Why Lymphosarcoma is correct:** Chronic lymphedema (lymph accumulation) following a radical mastectomy with axillary lymph node dissection leads to localized immune deficiency and chronic lymphatic stasis. Over a long period (typically 10–20 years), this can trigger the development of a rare, highly aggressive vascular tumor known as **Angiosarcoma** (historically and in some exam contexts referred to as lymphosarcoma). This specific clinical entity—angiosarcoma arising in a chronically lymphedematous limb—is known as **Stewart-Treves Syndrome**. **2. Why other options are incorrect:** * **A & B (Metastases/Recurrence):** While cancer can recur or spread after surgery, these are consequences of the primary malignancy's biology or inadequate clearance, not a direct complication of the *accumulation of lymph* itself. * **D (Pain):** While lymphedema causes discomfort and a sense of heaviness, "pain" is a non-specific symptom and not a pathological "complication" in the same category as a secondary malignancy like Stewart-Treves Syndrome. **3. NEET-PG High-Yield Pearls:** * **Stewart-Treves Syndrome:** Classically presents as purple/blue skin nodules or plaques on the arm 10+ years after mastectomy. * **Risk Factor:** Most commonly associated with the **Halsted Radical Mastectomy** due to the extensive nature of the lymphadenectomy. * **Diagnosis:** Requires a skin biopsy; the prognosis is generally poor due to early metastasis. * **Differential:** Do not confuse this with "Lymphangiosarcoma," though the terms are often used interchangeably in older textbooks. The modern pathological term is **Cutaneous Angiosarcoma**.

Question 154: Paget's disease of the breast is a manifestation of which of the following?

A. Ductal carcinoma (Correct Answer)
B. Lobular carcinoma
C. Ductal carcinoma in situ (DCIS)
D. Lobular carcinoma in situ (LCIS)

Explanation: **Explanation:** Paget’s disease of the breast is a rare manifestation of breast cancer characterized by the presence of **Paget cells** (large, pale, vacuolated cells with prominent nucleoli) within the epidermis of the nipple-areola complex. **Why Ductal Carcinoma is Correct:** Paget’s disease is almost always (95-100% of cases) associated with an **underlying malignancy**. The most common underlying pathology is **Ductal Carcinoma (either In-situ or Invasive)**. The "epidermotropic theory" suggests that malignant cells migrate from the underlying lactiferous ducts to the nipple skin. While DCIS is frequently present, the standard clinical association and the most comprehensive answer is Ductal Carcinoma, as it encompasses both the in-situ and invasive components often found in these patients. **Why Other Options are Incorrect:** * **Lobular Carcinoma (B & D):** Lobular carcinomas (In-situ or Invasive) arise from the terminal duct lobular units and rarely involve the nipple skin. Paget’s disease is histopathologically and clinically linked to the ductal system. * **Ductal Carcinoma In Situ (C):** While DCIS is present in many cases of Paget’s, approximately 40-50% of patients with Paget’s disease have an underlying **Invasive Ductal Carcinoma**. Therefore, "Ductal Carcinoma" is the more inclusive and accurate term for the manifestation. **High-Yield Clinical Pearls for NEET-PG:** * **Clinical Presentation:** Often misdiagnosed as eczema. A key differentiator is that Paget’s involves the **nipple first** and then spreads to the areola, whereas eczema usually involves the areola first. * **Diagnosis:** Confirmed by a **punch biopsy** or wedge biopsy of the nipple. * **Staining:** Paget cells are typically **PAS positive**, diastase resistant, and positive for **Her2/neu** protein overexpression. * **Management:** If no mass is palpable and imaging is negative, breast-conserving surgery (nipple-areola resection) with radiotherapy is an option; otherwise, management follows the protocol for the underlying ductal cancer.

Question 155: What does a BIRADS score of 4 suggest?

A. Normal lesion
B. Suspicious of malignancy (Correct Answer)
C. Mostly benign
D. Proven malignancy

Explanation: **Explanation:** The **BI-RADS (Breast Imaging-Reporting and Data System)** is a standardized scoring system used by radiologists to communicate the risk of malignancy in breast lesions. **Why Option B is Correct:** A **BI-RADS 4** score is defined as **"Suspicious Abnormality."** These lesions do not have the classic appearance of cancer but possess features that make malignancy a possibility. Because the risk of malignancy ranges from **2% to 95%**, a tissue diagnosis (biopsy) is mandatory for all BI-RADS 4 lesions. **Analysis of Incorrect Options:** * **Option A (Normal):** This corresponds to **BI-RADS 1**, where there are no findings to report and the risk of malignancy is 0%. * **Option C (Mostly Benign):** This corresponds to **BI-RADS 3** (Probably Benign). These lesions have a <2% risk of malignancy and are typically managed with short-interval follow-up (6 months) rather than immediate biopsy. * **Option D (Proven Malignancy):** This corresponds to **BI-RADS 6**, which is used for lesions already confirmed as malignant by prior biopsy. (Note: **BI-RADS 5** is "Highly Suggestive of Malignancy" with a >95% risk). **High-Yield Clinical Pearls for NEET-PG:** * **BI-RADS 0:** Incomplete assessment; needs further imaging (e.g., comparison with old films or ultrasound). * **BI-RADS 2:** Benign findings (e.g., simple cysts, stable fibroadenomas); 0% risk of malignancy. * **Sub-classification of BI-RADS 4:** * **4A:** Low suspicion (2–10% risk) * **4B:** Moderate suspicion (10–50% risk) * **4C:** High suspicion (50–95% risk) * **Management Rule:** BI-RADS 4 and 5 always require pathological correlation (Core Needle Biopsy is the gold standard).

Question 156: What is the best time for breast self-examination (BSE)?

A. One week before menstruation
B. During ovulation
C. Two to three days post-ovulation
D. One week after menstruation (Correct Answer)

Explanation: **Explanation:** The correct answer is **Option D: One week after menstruation.** **Why it is correct:** The primary goal of Breast Self-Examination (BSE) is to detect abnormal lumps or changes. During the menstrual cycle, breast tissue is highly sensitive to hormonal fluctuations (estrogen and progesterone). In the pre-ovulatory and pre-menstrual phases, hormonal stimulation causes increased vascularity, water retention, and glandular engorgement, making the breasts feel tender, firm, or "lumpy" (physiologic nodularity). The **best time** for BSE is **7 to 10 days after the first day of the menstrual period** (the early follicular phase). At this point, estrogen and progesterone levels are at their lowest, breast engorgement has subsided, and the tissue is softest and least tender, making it easier to palpate true underlying masses. **Why other options are incorrect:** * **Option A (One week before menstruation):** This is the luteal phase where progesterone is high. Breasts are often swollen and tender, which can lead to false-positive findings or discomfort during examination. * **Options B & C (Ovulation/Post-ovulation):** During and immediately after ovulation, rising estrogen levels begin the process of fluid retention and ductal proliferation, which can obscure small lesions. **NEET-PG High-Yield Pearls:** * **Post-menopausal/Pregnant women:** Since they do not have cycles, they should perform BSE on a **fixed date every month** (e.g., the 1st of every month) to maintain consistency. * **BSE Utility:** While BSE is a common recommendation for "breast awareness," large trials have shown it does not reduce mortality. However, it remains a high-yield exam topic for screening protocols. * **Clinical Triad:** The gold standard for breast cancer diagnosis is **Triple Assessment**: Clinical examination, Imaging (Mammography/USG), and Pathology (FNAC/Biopsy).

Question 157: A 14-year-old healthy girl, with normal height and weight for her age, complains that her right breast has developed twice the size of her left breast since the onset of puberty at age 12. Both breasts have similar consistency on palpation with normal nipples and areolae. What is the most likely cause for these findings?

A. Cystosarcoma phyllodes
B. Virginal hypertrophy (Correct Answer)
C. Fibrocystic disease
D. Early stage of carcinoma

Explanation: **Explanation:** The correct answer is **Virginal Hypertrophy** (also known as Juvenile Hypertrophy). **1. Why Virginal Hypertrophy is correct:** Virginal hypertrophy is characterized by rapid, often massive, enlargement of one or both breasts during or shortly after puberty. It is thought to be caused by an abnormal end-organ sensitivity to normal levels of estrogen. In this case, the patient is 14 years old (post-pubertal), and the breast tissue is described as having a **normal consistency** without discrete masses, which is the hallmark of this condition. While it can be bilateral, it is frequently asymmetrical, as seen in this patient. **2. Why the other options are incorrect:** * **Cystosarcoma Phyllodes:** While it can cause rapid breast enlargement, it typically presents as a **firm, mobile, well-defined, multinodular mass** (leaf-like architecture). It is rare in 14-year-olds and would not present with "normal consistency" on palpation. * **Fibrocystic Disease:** This usually presents in women aged 30–50. It is characterized by cyclical mastalgia (pain) and "lumpy" breast texture (nodularity), not massive unilateral enlargement in a teenager. * **Early stage of carcinoma:** Breast cancer is extremely rare in the pediatric/adolescent population. Early-stage carcinoma typically presents as a painless, hard, solitary lump rather than diffuse enlargement of the entire breast. **Clinical Pearls for NEET-PG:** * **Management:** The initial treatment for Virginal Hypertrophy is often observation or hormonal therapy (e.g., Tamoxifen), but definitive treatment for stable, severe cases is **reduction mammoplasty** (once breast growth has ceased). * **Differential Diagnosis:** Always differentiate from a **Giant Fibroadenoma**, which presents as a discrete, encapsulated mass, whereas Virginal Hypertrophy involves diffuse enlargement of the entire breast stroma. * **Key Age Group:** Typically occurs between ages 11 and 14.

Question 158: A 50-year-old woman complains of intermittent bleeding from the left nipple over the past 3 months. No mass is palpable, but a bead of blood can be expressed from the nipple. What is the ideal procedure in this case?

A. Cytological examination of discharge and, if no malignant cells, careful observation
B. Segmental excision of the breast
C. Microdochotomy (Correct Answer)
D. Simple mastectomy

Explanation: ### Explanation The clinical presentation of **spontaneous, unilateral, single-duct bloody nipple discharge** in the absence of a palpable mass is the classic triad for an **Intraductal Papilloma**. This is the most common cause of bloody nipple discharge. **Why Microdochotomy is the Correct Choice:** Microdochotomy (also known as microdochectomy) is the surgical excision of a **single offending duct**. In this patient, the ability to express blood from a specific point on the nipple allows for the identification of the involved duct. The procedure is both diagnostic (to rule out papillary carcinoma) and therapeutic (to stop the bleeding). It is the gold standard when the discharge is localized to a single duct. **Analysis of Incorrect Options:** * **Option A:** Cytological examination of nipple discharge has a high false-negative rate and low sensitivity for detecting malignancy. Observation is inappropriate as a pathological cause must be ruled out. * **Option B:** Segmental excision (or Wide Local Excision) is too extensive for a non-palpable lesion and is typically reserved for confirmed malignancies or larger benign masses. * **Option D:** Simple mastectomy is an aggressive over-treatment for a condition that is most likely a benign intraductal papilloma. **NEET-PG High-Yield Pearls:** * **Most common cause of bloody nipple discharge:** Intraductal Papilloma. * **Most common cause of nipple discharge overall:** Duct Ectasia (usually multicolored/greenish). * **Investigation of choice:** Triple assessment (Clinical, Imaging like Galactography/Ultrasound, and Histology). * **Hadfield’s Procedure (Total Duct Excision):** Preferred over microdochotomy if the discharge comes from **multiple ducts** or if the patient is older and not planning to breastfeed.

Question 159: Carcinoma breast spread to the other breast is more common in which type of breast carcinoma?

A. Lobular carcinoma (Correct Answer)
B. Scirrhous Carcinoma
C. Both of the above
D. None of the above

Explanation: **Explanation:** **Invasive Lobular Carcinoma (ILC)** is characterized by a unique growth pattern and a high propensity for **multicentricity** (multiple foci in the same breast) and **bilaterality** (involvement of the contralateral breast). 1. **Why Lobular Carcinoma is correct:** The hallmark of ILC is the loss of the cell-adhesion molecule **E-cadherin**. This leads to the characteristic "Indian file" pattern where cells lack cohesion and infiltrate the stroma individually. Because these cells do not form a solid mass early on, the disease is often clinically occult and diffuse. Statistically, ILC has a significantly higher rate of bilateral involvement (up to 10–15%) compared to other types, making it the most common subtype to spread to or arise in the opposite breast. 2. **Why other options are incorrect:** * **Scirrhous Carcinoma:** This is a descriptive term for a subtype of Invasive Carcinoma of No Special Type (NST/Ductal) characterized by dense fibrous stroma (desmoplasia). While it is the most common clinical presentation of breast cancer, it is typically a localized, unifocal mass and does not share the same high risk of bilaterality as ILC. * **Options C & D:** These are incorrect as the biological behavior regarding bilaterality is specific to the lobular subtype. **High-Yield Clinical Pearls for NEET-PG:** * **Most common site of metastasis for ILC:** Unlike ductal carcinoma, ILC frequently spreads to unusual sites like the **peritoneum, GI tract, ovaries, and leptomeninges**. * **Imaging:** ILC is notorious for being "mammographically silent" due to its diffuse growth; **MRI** is the most sensitive modality for determining its true extent. * **E-cadherin:** Negative staining for E-cadherin is the definitive immunohistochemical marker to differentiate Lobular from Ductal carcinoma.

Question 160: In the Patey procedure, what is done regarding the pectoralis muscles?

A. Removal of both pectoralis major and minor
B. Removal of pectoralis minor and preservation of pectoralis major (Correct Answer)
C. Pectoralis minor is divided
D. Both pectoralis major and minor are preserved

Explanation: The **Patey procedure**, also known as **Modified Radical Mastectomy (MRM)**, is a surgical intervention for breast cancer that aims to achieve oncological clearance while reducing the morbidity associated with the older Halsted Radical Mastectomy. ### Explanation of the Correct Answer The hallmark of the Patey modification is the **preservation of the pectoralis major muscle** and the **complete excision of the pectoralis minor muscle**. * **The Rationale:** Removing the pectoralis minor allows for complete access to the **Level III (apical) axillary lymph nodes**, ensuring thorough lymphadenectomy. Preserving the pectoralis major maintains the chest wall contour and provides better coverage for potential breast reconstruction, significantly improving cosmetic and functional outcomes compared to radical procedures. ### Why Other Options are Incorrect * **Option A:** Removal of both muscles describes the **Halsted Radical Mastectomy**, which is now rarely performed due to significant disfigurement and functional loss. * **Option C:** Dividing the pectoralis minor (and then repairing it) is characteristic of the **Auchincloss modification** of MRM. In Auchincloss, the muscle is retracted or divided but not excised, which may limit access to Level III nodes. * **Option D:** Preserving both muscles is the standard in the **Auchincloss/Madden procedure**, which is the most common form of MRM used today. ### NEET-PG High-Yield Pearls * **Madden/Auchincloss Procedure:** Most common MRM; preserves both pectoralis major and minor. * **Patey Procedure:** Preserves major, removes minor (indicated if there is Level III node involvement). * **Nerves at risk during MRM:** 1. **Long thoracic nerve (Nerve to Serratus Anterior):** Injury leads to "Winging of Scapula." 2. **Thoracodorsal nerve (Nerve to Latissimus Dorsi):** Injury leads to weak adduction and internal rotation of the arm. 3. **Intercostobrachial nerve:** Most commonly injured nerve; leads to numbness in the inner aspect of the upper arm.

Practice by Chapter

Breast Anatomy and Physiology

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Benign Breast Diseases

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Breast Cancer Screening

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Breast Cancer: Diagnosis and Staging

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Surgical Management of Breast Cancer

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Oncoplastic Breast Surgery

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Sentinel Lymph Node Biopsy

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Axillary Surgery

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Breast Reconstruction Techniques

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Male Breast Disorders

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Phyllodes Tumors

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Management of Ductal Carcinoma In Situ

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