Breast Surgery — MCQs

Breast Surgery Indian Medical PG Practice Questions and MCQs

Question 31: Which of the following are risk factors for breast cancer?

A. Early marriage (<20 years), nulliparity, and avoiding breastfeeding
B. Increased risk in relatives, nulliparity, and high-fat diet (Correct Answer)
C. Increased risk in relatives, early marriage (<20 years), and high-fat diet
D. Increased risk in relatives, early marriage (<20 years), and avoiding breastfeeding

Explanation: **Explanation:** The risk factors for breast cancer are primarily linked to prolonged exposure to endogenous estrogens and lifestyle factors. **Why Option B is correct:** 1. **Family History/Relatives:** A positive family history, especially in first-degree relatives (mother, sister, daughter), significantly increases risk due to shared genetic susceptibility (e.g., BRCA1/2 mutations). 2. **Nulliparity:** Pregnancy induces terminal differentiation of breast epithelium and provides a "break" from cyclic estrogen exposure. Women who have never carried a pregnancy to term (nulliparous) have a higher cumulative lifetime exposure to estrogen. 3. **High-fat Diet:** Obesity (especially postmenopausal) and high-fat intake are linked to increased peripheral conversion of androstenedione to estrone in adipose tissue, elevating circulating estrogen levels. **Why other options are incorrect:** * **Early Marriage (<20 years):** This is actually a **protective factor** in the context of early first full-term pregnancy. Early childbearing (before age 20) significantly reduces the lifetime risk of breast cancer compared to late first pregnancy (after age 30). Therefore, Options A, C, and D are incorrect. * **Avoiding Breastfeeding:** While lack of breastfeeding is a known risk factor (as lactation suppresses ovulation and reduces estrogen), the inclusion of "early marriage" in Options A and D makes them incorrect. **High-Yield Clinical Pearls for NEET-PG:** * **Most significant risk factor:** Age (increasing age). * **Protective factors:** Early menopause, early first pregnancy (<20 years), multiparity, and prolonged breastfeeding. * **Gail Model:** The most commonly used clinical tool to estimate the 5-year and lifetime risk of developing invasive breast cancer. * **Li-Fraumeni Syndrome:** Associated with *p53* mutation; breast cancer is a core component.

Question 32: Which of the following is NOT true of Paget's disease of the breast?

A. Usually bilateral (Correct Answer)
B. Associated with intraductal carcinoma
C. Prognosis is good in the absence of a palpable lump
D. Treatment involves simple mastectomy with axillary clearance

Explanation: **Explanation:** Paget’s disease of the breast is a rare manifestation of breast cancer characterized by malignant cells (Paget cells) infiltrating the epidermis of the nipple-areola complex. **Why Option A is the correct answer (False statement):** Paget’s disease is **characteristically unilateral**. It typically presents as an eczematous-like lesion of the nipple that does not respond to topical steroids. Bilateral involvement is extremely rare and should prompt a search for other dermatological conditions like chronic eczema. **Analysis of other options:** * **Option B:** It is strongly associated with underlying malignancy. In approximately 90% of cases, there is an underlying **Ductal Carcinoma In Situ (DCIS)** or invasive ductal carcinoma. * **Option C:** The prognosis is directly linked to the presence of a palpable mass. If no mass is palpable, the underlying disease is usually DCIS, leading to a **favorable prognosis**. If a mass is present, it often indicates invasive cancer with a higher risk of axillary metastasis. * **Option D:** Standard surgical management traditionally involves a **Simple Mastectomy** with axillary evaluation (Sentinel Lymph Node Biopsy or clearance). However, Breast Conserving Surgery (BCS) followed by radiotherapy is now an acceptable alternative in localized cases. **High-Yield Clinical Pearls for NEET-PG:** * **Pathology:** Paget cells are large, PAS-positive, pale-staining cells with prominent nucleoli located in the basal layer of the epidermis. * **Clinical Tip:** Unlike simple eczema, Paget’s disease **involves the nipple first** and may spread to the areola. Eczema usually involves the areola first. * **Diagnosis:** Confirmed by a **full-thickness wedge biopsy** of the nipple-areola complex.

Question 33: A 45-year-old woman presents with a weeping eczematoid lesion of her nipple. Which of the following statement is false concerning her diagnosis and management?

A. Treatment is with warm compresses and oral antibiotics (Correct Answer)
B. Biopsy of the nipple revealing malignant cells within the milk ducts is invariably associated with an underlying invasive carcinoma
C. The appropriate treatment is mastectomy
D. The lesion always represents a high-risk disease with a significant risk of subsequent metastatic disease

Explanation: **Explanation:** The clinical presentation of a **weeping, eczematoid lesion of the nipple** in a middle-aged woman is classic for **Paget’s Disease of the Breast**. **1. Why Option A is the Correct (False) Statement:** Paget’s disease is a malignant condition caused by the migration of malignant cells (Paget cells) from an underlying ductal carcinoma in situ (DCIS) or invasive cancer into the nipple epidermis. It is **not an infection**. Treating it with warm compresses and antibiotics is inappropriate and leads to a dangerous delay in diagnosis. Any "eczema" of the nipple that does not resolve quickly with topical steroids must be biopsied. **2. Analysis of Other Options:** * **Option B:** Paget’s disease is almost **invariably associated with an underlying malignancy** (DCIS in ~40% and invasive carcinoma in ~60% of cases). The biopsy shows large, pale ovoid cells with hyperchromatic nuclei (Paget cells) within the epidermis. * **Option C:** Historically, **Mastectomy** (Simple or Modified Radical) was the standard. While Breast Conserving Surgery (BCS) followed by radiotherapy is now an option for localized disease, mastectomy remains a definitive and appropriate treatment choice, especially if the underlying tumor is multicentric. * **Option D:** Because Paget’s disease signifies an underlying malignancy (often invasive), it represents a **high-risk disease** with a potential for axillary lymph node involvement and subsequent metastasis. **High-Yield Clinical Pearls for NEET-PG:** * **Pathognomonic finding:** Paget cells (PAS positive, diastase resistant). * **Clinical Tip:** Eczema of the nipple is **bilateral** in true eczema but **unilateral** in Paget’s disease. * **Diagnosis:** Full-thickness punch biopsy of the nipple-areola complex. * **Associated Marker:** Often associated with **HER2/neu overexpression**.

Question 34: Which of the following conditions can present with bleeding from the nipple?

A. Fibroadenoma
B. Duct ectasia
C. Ductal papilloma
D. Chronic breast abscess (Correct Answer)

Explanation: **Explanation:** The correct answer is **Chronic breast abscess**. While bloody nipple discharge is most commonly associated with intraductal pathologies, chronic inflammatory conditions like a breast abscess can cause erosion of the ductal walls and surrounding blood vessels, leading to blood-stained discharge. In the context of this specific question, chronic breast abscess is a recognized cause of serosanguinous or bloody discharge due to tissue destruction and granulation. **Analysis of Options:** * **Ductal Papilloma (Option C):** This is the **most common cause** of spontaneous, single-duct bloody nipple discharge. However, in many MCQ formats, if the question asks for a specific clinical scenario or if "Chronic breast abscess" is marked as the key, it highlights that inflammatory erosion is a significant differential. (Note: In clinical practice, Papilloma is the top differential, but examiners often use abscess to test knowledge of inflammatory complications). * **Duct Ectasia (Option B):** Typically presents with thick, multicolored (green, creamy, or brown) "toothpaste-like" discharge. While it can occasionally be blood-stained due to periductal mastitis, it is less common than in papillomas or abscesses. * **Fibroadenoma (Option A):** This is a benign solid tumor (a "breast mouse") and does not involve the ductal system; therefore, it does not present with nipple discharge. **NEET-PG High-Yield Pearls:** 1. **Most common cause of bloody nipple discharge:** Intraductal Papilloma. 2. **Most common cause of nipple discharge overall:** Duct Ectasia. 3. **Management of bloody discharge:** Must rule out malignancy (DCIS or Invasive Ductal Carcinoma) via triple assessment and Microdochectomy (removal of a single duct) or Hadfield’s operation (total duct excision). 4. **Amniotic fluid-like discharge:** Often seen in Duct Ectasia.

Question 35: Nipple inversion occurs due to involvement of?

A. Cooper's ligament
B. Subareolar duct (Correct Answer)
C. Parenchyma of breast
D. Subdermal lymphatics

Explanation: ### Explanation **Correct Answer: B. Subareolar duct** **Mechanism:** Nipple inversion (retraction) is a classic clinical sign of underlying breast pathology, most notably **ductal carcinoma** or **duct ectasia**. The anatomical basis for this is the involvement of the **lactiferous (subareolar) ducts**. When a tumor or inflammatory process (fibrosis) involves these ducts, they undergo shortening and contraction. Since the ducts are physically attached to the nipple, this longitudinal tension pulls the nipple inward, leading to inversion. **Analysis of Incorrect Options:** * **A. Cooper’s ligament:** Involvement or contraction of the Suspensory Ligaments of Cooper leads to **skin dimpling** or tethering, not nipple inversion. These ligaments connect the dermis to the deep fascia. * **C. Parenchyma of breast:** While a tumor originates in the parenchyma, the specific physical sign of nipple retraction only occurs if the process extends to or involves the retroareolar ductal system. * **D. Subdermal lymphatics:** Obstruction of these lymphatics by cancer cells leads to localized lymphedema. Because the skin is anchored by hair follicles, the swollen skin bulges around them, creating the characteristic **Peau d’orange** appearance. **High-Yield Clinical Pearls for NEET-PG:** * **Nipple Retraction vs. Inversion:** Long-standing, slit-like inversion is often benign (congenital or duct ectasia). Recent, asymmetrical, or fixed retraction is highly suspicious for malignancy. * **Paget’s Disease:** Always differentiate nipple retraction from Paget’s disease, which presents as an itchy, eczematous lesion of the nipple-areola complex. * **Triple Assessment:** Any new nipple inversion in a post-menopausal woman requires a triple assessment (Clinical exam + Imaging + Biopsy).

Question 36: Paget's disease of the nipple is classified as which of the following?

A. Infection
B. Dermatitis
C. Neoplasia (Correct Answer)
D. Hypopigmentation

Explanation: **Explanation:** **Paget’s disease of the nipple** is a form of **neoplasia** (Option C). It is characterized by the presence of malignant glandular cells (Paget cells) within the squamous epithelium of the nipple-areola complex. These cells typically migrate from an underlying breast malignancy—most commonly a **Ductal Carcinoma In Situ (DCIS)** or an invasive ductal carcinoma—via the lactiferous ducts. **Why other options are incorrect:** * **Infection (A):** While it may present with redness, Paget’s does not respond to antibiotics and lacks systemic signs of infection like fever. * **Dermatitis (B):** This is the most common misdiagnosis. Unlike eczema (dermatitis), which usually affects the areola first and is often bilateral, Paget’s disease typically starts at the **nipple** and spreads to the areola, is almost always **unilateral**, and does not respond to topical steroids. * **Hypopigmentation (D):** Paget’s presents as an erythematous, eczematous, or crusty lesion; it does not cause a loss of melanin. **High-Yield Clinical Pearls for NEET-PG:** * **Clinical Presentation:** A chronic, eczematous, crusting, or ulcerated lesion of the nipple that may bleed or discharge serosanguinous fluid. * **Histology:** Large, pale, vacuolated cells (**Paget cells**) with prominent nucleoli. They are **PAS positive** (diastase resistant) and contain mucin. * **Immunohistochemistry (IHC):** Typically positive for **Her2/neu**, CK7, and EMA. * **Association:** Nearly **100%** of cases are associated with an underlying malignancy (DCIS or invasive cancer). * **Management:** Requires a bilateral mammogram and biopsy (punch or wedge) for diagnosis, followed by surgical management (Mastectomy or Breast Conserving Surgery with radiotherapy).

Question 37: A 28-year-old female presents with a 1 cm hard lump indicative of infiltrating breast carcinoma. Staging is T1-N0-M0. What is the best treatment?

A. Radical mastectomy
B. Simple mastectomy (Correct Answer)
C. Extended radical mastectomy
D. Super radical mastectomy

Explanation: **Explanation:** The management of early breast cancer (T1-N0-M0) has evolved from radical procedures to more conservative approaches. In this clinical scenario, the patient has a small (1 cm), node-negative tumor. **Why Simple Mastectomy is the correct answer:** A **Simple (Total) Mastectomy** involves the removal of the entire breast tissue, including the nipple-areola complex and the fascia of the pectoralis major, but *without* axillary lymph node dissection or removal of muscles. For a T1-N0 lesion, this is the most appropriate surgical choice among the given options to achieve local control. While Breast Conserving Surgery (BCS) followed by radiotherapy is also a standard for T1 lesions, among the mastectomy options listed, Simple Mastectomy is the gold standard for early-stage disease when radicality is not required. **Analysis of Incorrect Options:** * **A. Radical (Halsted) Mastectomy:** This involves removal of the breast, both pectoral muscles (major and minor), and all three levels of axillary lymph nodes. It is now obsolete due to significant morbidity (lymphedema, restricted shoulder movement) and no survival benefit over less invasive surgeries. * **C. Extended Radical (Urban’s) Mastectomy:** This includes Halsted’s procedure plus the removal of internal mammary lymph nodes. It is no longer practiced as it increases morbidity without improving prognosis. * **D. Super Radical (Dahl-Iversen) Mastectomy:** This involves Halsted’s procedure plus removal of supraclavicular and mediastinal nodes. It is of historical interest only. **High-Yield NEET-PG Pearls:** * **Modified Radical Mastectomy (MRM):** Currently the most common surgery for operable breast cancer (Stage I & II). It removes the breast and axillary nodes but **preserves the Pectoralis Major muscle**. * **Patey’s MRM:** Removes Pectoralis Minor; **Auchincloss MRM:** Preserves Pectoralis Minor. * **Standard of Care:** For T1-T2 tumors, BCS + Radiotherapy is equivalent to Mastectomy in terms of long-term survival.

Question 38: Granulomatous mastitis occurs in all of the following conditions EXCEPT:

A. Bacterial infection
B. Fungal infection
C. Breast feeding (Correct Answer)
D. Diabetes

Explanation: **Explanation:** Granulomatous mastitis is a rare inflammatory condition of the breast characterized by the formation of non-caseating granulomas. The diagnosis is reached by excluding common causes of granulomatous inflammation. **Why Breastfeeding is the Correct Answer:** Breastfeeding is typically associated with **acute pyogenic mastitis** (usually caused by *Staphylococcus aureus*), which presents with abscess formation and acute suppuration, not granulomatous inflammation. In fact, **Idiopathic Granulomatous Mastitis (IGM)**—the most common subtype—characteristically occurs in parous women but is specifically associated with the **post-lactational period** (usually within 2–5 years after giving birth), rather than the period of active breastfeeding itself. **Analysis of Other Options:** * **Bacterial Infection:** Specific infections like **Tuberculosis** (*Mycobacterium tuberculosis*) are a classic cause of granulomatous mastitis, especially in endemic regions like India. It presents with "cold abscesses" and sinus tracts. * **Fungal Infection:** Rare fungal infections (e.g., Histoplasmosis, Actinomycosis) can trigger a granulomatous immune response in the breast tissue. * **Diabetes:** Diabetes mellitus is associated with **Diabetic Mastopathy**, a condition characterized by lymphocytic mastitis and fibrosis which can histologically mimic or coexist with granulomatous patterns. **NEET-PG High-Yield Pearls:** * **Idiopathic Granulomatous Mastitis (IGM):** Most common in young, parous women. It can mimic breast cancer clinically and radiologically (Peau d'orange, nipple retraction). * **Diagnosis:** Requires a **core needle biopsy** to visualize granulomas and special stains (AFB, PAS) to rule out TB and fungi. * **Treatment:** IGM is primarily treated with **corticosteroids** or immunosuppressants (Methotrexate); surgery is reserved for refractory cases due to high recurrence rates.

Question 39: Estrogen receptor studies in carcinoma breast are performed on which of the following?

A. Blood
B. Urine
C. Tumor tissue (Correct Answer)
D. Ovary

Explanation: **Explanation:** The correct answer is **Tumor tissue**. **Underlying Medical Concept:** Estrogen Receptors (ER) and Progesterone Receptors (PR) are intracellular proteins found within the nucleus of breast cells. In breast carcinoma, these receptors act as transcription factors that promote cell proliferation when bound by hormones. Testing for these receptors is essential for determining the **prognosis** and **predicting the response to endocrine therapy** (e.g., Tamoxifen or Aromatase Inhibitors). Since the receptors are located within the malignant cells themselves, the study must be performed on the **tumor tissue** obtained via core needle biopsy or surgical excision, typically using **Immunohistochemistry (IHC)**. **Analysis of Incorrect Options:** * **A & B (Blood and Urine):** While hormones (estrogen) circulate in the blood and metabolites are excreted in the urine, the *receptors* are structural components of the tumor cells. Circulating levels of estrogen do not indicate whether the tumor will respond to hormonal blockade. * **D (Ovary):** Although the ovaries are the primary source of estrogen in premenopausal women, they do not harbor the breast cancer receptors. Oophorectomy was historically used to reduce estrogen levels, but it is not the site for receptor testing. **High-Yield Clinical Pearls for NEET-PG:** * **Gold Standard Method:** Immunohistochemistry (IHC) is the standard technique. The **Allred Scoring system** (0–8) is commonly used to quantify the results. * **Predictive Value:** ER positivity is the single most important predictor of response to hormonal therapy. Approximately 80% of ER+ tumors respond to endocrine treatment. * **Prognostic Value:** ER-positive tumors generally have a better prognosis and lower histological grade compared to ER-negative (Triple Negative) tumors. * **HER2/neu:** Along with ER/PR, HER2/neu status is always tested on tumor tissue to determine eligibility for Trastuzumab (Herceptin).

Question 40: At what age is mammography recommended for screening?

A. 20 years
B. 30 years
C. 40 years (Correct Answer)
D. 50 years

Explanation: **Explanation:** The correct answer is **40 years**. Mammography is the gold standard for breast cancer screening because it can detect microcalcifications and small masses before they are clinically palpable. **1. Why 40 years is correct:** Most international guidelines (including ACS and NCCN) and standard surgical textbooks (Bailey & Love) recommend starting annual or biennial screening mammography at age **40**. At this age, the incidence of breast cancer begins to rise significantly, and the breast tissue becomes less dense (undergoing fatty involution), which increases the sensitivity and diagnostic accuracy of the mammogram. **2. Analysis of Incorrect Options:** * **20 years (A):** Breast cancer is extremely rare at this age. Furthermore, young breasts are highly dense (glandular), making mammography ineffective as the "white" glandular tissue masks potential lesions. * **30 years (B):** Screening at 30 is not recommended for the general population. However, for high-risk patients (e.g., BRCA1/2 carriers), screening may start earlier (often with MRI). * **50 years (C):** While some European guidelines suggest 50, most competitive exams follow the 40-year benchmark for the earliest start of routine screening to maximize early detection. **Clinical Pearls for NEET-PG:** * **Best initial investigation:** In women **<30-35 years**, Ultrasound is preferred due to dense breasts. In women **>35-40 years**, Mammography is the first choice. * **Triple Assessment:** Includes Clinical Examination, Imaging (USG/Mammography), and Pathology (FNAC/Core Needle Biopsy). **Core Needle Biopsy** is the gold standard for diagnosis. * **BIRADS:** A standardized reporting system for mammography (Category 0-6). * **Characteristic Mammographic signs of malignancy:** Spiculated mass, pleomorphic microcalcifications, and architectural distortion.

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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