Breast Surgery Practice Questions

Q: What is true about Paget's disease of the nipple?

There is always underlying carcinoma.. ### Explanation: Paget’s Disease of the Nipple Paget’s disease of the nipple is a rare manifestation of breast cancer characterized by an eczematous-like lesion of the nipple-areola complex. **1. Why Option A is Correct:** Paget’s disease is virtually always associated with an **underlying breast carcinoma**. In approximately 90-100% of cases, there is either an underlying **Infiltrating Ductal Carcinoma (IDC)** or **Ductal Carcinoma in Situ (DCIS)**. The disease occurs when malignant cells (Paget cells) migrate from the underlying lactiferous ducts into the epidermis of the nipple. **2. Why Other Options are Incorrect:** * **Option B:** Eczema of the nipple is typically **bilateral** and involves the areola first, often seen in younger, lactating women. In contrast, Paget’s disease is almost always **unilateral** and starts at the nipple. * **Option C:** Histology reveals **Paget cells**, which are large, pale, ovoid cells with prominent nucleoli and abundant granular cytoplasm. They are PAS-positive (diastase resistant). Giant cells are characteristic of granulomatous conditions, not Paget’s. * **Option D:** While it indicates an underlying malignancy, the prognosis of Paget’s disease itself depends entirely on the stage and nature of the underlying tumor, rather than being "highly malignant" in its own right. **Clinical Pearls for NEET-PG:** * **Clinical Presentation:** Persistent, unilateral, itchy, or crusting lesion of the nipple that does not respond to topical steroids. * **Key Diagnostic Feature:** Unlike simple eczema, Paget’s disease **destroys the nipple**. * **Diagnosis:** Confirmed by a **punch biopsy** or wedge biopsy of the nipple. * **Management:** Treatment follows the protocol for the underlying breast cancer (usually Modified Radical Mastectomy or Breast Conserving Surgery with radiotherapy).

Q: What is the most common type of cancer found in the male breast?

Infiltrating ductal carcinoma. **Explanation:** **1. Why Infiltrating Ductal Carcinoma (IDC) is correct:** Infiltrating Ductal Carcinoma (IDC) is the most common histological subtype of male breast cancer, accounting for approximately **85-90% of cases**. This is because the male breast primarily consists of rudimentary ductal elements without well-developed lobules. Since cancer arises from these pre-existing structures, ductal morphology is the predominant finding. **2. Why the other options are incorrect:** * **Lobular carcinoma in situ (LCIS) / Invasive Lobular Carcinoma:** These are extremely rare in males (less than 1-2%). The male breast lacks **acini and lobules** under normal physiological conditions. Lobular carcinoma usually only occurs in males if there is significant hormonal stimulation leading to lobular development (e.g., severe gynecomastia or estrogen therapy). * **Ductal carcinoma in situ (DCIS):** While DCIS does occur in males, it is far less common than the invasive (infiltrating) form at the time of diagnosis. Most male breast cancers present at a later stage as a palpable mass, by which time they have already become invasive. **3. High-Yield Clinical Pearls for NEET-PG:** * **Risk Factors:** The most significant risk factor is **BRCA2 mutation** (more common than BRCA1 in males) and **Klinefelter Syndrome (47, XXY)**. * **Presentation:** Usually presents as a painless, firm subareolar mass. Eccentric masses are more likely to be gynecomastia. * **Staging & Treatment:** Staging is the same as in females. The standard surgical treatment is **Modified Radical Mastectomy (MRM)** because the small size of the male breast makes breast-conserving surgery difficult. * **Prognosis:** Often worse than in females, primarily due to delayed diagnosis and early involvement of the skin and chest wall.

Q: Which of the following is a complication of mastectomy?

All of the above. **Explanation:** Mastectomy is a major surgical procedure associated with several early and late complications. The correct answer is **All of the above** because each option represents a recognized clinical outcome following the procedure. 1. **Seroma (Option A):** This is the **most common** early complication of mastectomy. It involves a collection of serous fluid in the dead space under the skin flaps or in the axilla. It occurs due to the disruption of lymphatics and capillaries during dissection. 2. **Long Thoracic Nerve Palsy (Option B):** During axillary lymph node dissection (ALND), the long thoracic nerve (Nerve of Bell) is at risk. Injury leads to paralysis of the **Serratus Anterior** muscle, clinically presenting as **"Winging of the Scapula."** 3. **Angiosarcoma (Option C):** This is a rare but dreaded late complication known as **Stewart-Treves Syndrome**. It refers to lymphangiosarcoma arising in a limb affected by chronic lymphedema (usually 10+ years post-mastectomy). **Clinical Pearls for NEET-PG:** * **Nerve Injuries:** * *Intercostobrachial nerve:* Most commonly injured nerve; leads to numbness of the inner aspect of the upper arm. * *Thoracodorsal nerve:* Injury leads to weakness in internal rotation and adduction (Latissimus dorsi). * **Lymphedema:** Occurs in about 10-25% of patients post-ALND; risk is significantly reduced with Sentinel Lymph Node Biopsy (SLNB). * **Flap Necrosis:** Usually occurs at the edges of the skin flaps if they are tensioned or too thin.

Q: Which is a distressing complication after modified radical mastectomy?

Lymphedema. **Explanation:** **1. Why Lymphedema is the Correct Answer:** Lymphedema is considered the most **distressing and dreaded** long-term complication of Modified Radical Mastectomy (MRM). It occurs due to the disruption of lymphatic drainage following Axillary Lymph Node Dissection (ALND). The resulting chronic swelling of the arm leads to functional impairment, psychological distress, recurrent cellulitis, and, in rare cases, lymphangiosarcoma (Stewart-Treves Syndrome). While not immediately life-threatening, its chronic, progressive nature and impact on the quality of life make it the most "distressing" clinical outcome. **2. Analysis of Incorrect Options:** * **Axillary Vein Thrombosis:** This is a rare acute complication. While serious, it is far less common than lymphedema and usually manageable with anticoagulation. * **Seroma:** This is the **most common** early complication after MRM. While annoying and requiring frequent aspirations, it is usually self-limiting and does not cause the long-term morbidity associated with lymphedema. * **Death:** Mortality following MRM is extremely low (<0.1%) as it is a major but non-cavitary surgery. It is not a characteristic complication of the procedure itself. **Clinical Pearls for NEET-PG:** * **Most common complication:** Seroma formation. * **Most distressing/dreaded complication:** Lymphedema. * **Incidence of Lymphedema:** Approximately 10–30% after ALND; significantly reduced (<5%) with Sentinel Lymph Node Biopsy (SLNB). * **Nerve Injuries during MRM:** * **Long Thoracic Nerve (Bell’s):** Leads to Winging of Scapula. * **Thoracodorsal Nerve:** Leads to weakness in adduction/internal rotation (Latissimus dorsi). * **Intercostobrachial Nerve:** Most commonly injured nerve; leads to numbness of the inner aspect of the upper arm.

Q: What is the LEAST diagnostic test for breast tumours?

Chest X-ray. ### Explanation The diagnosis of a breast lump follows the **Triple Assessment** protocol, which includes clinical examination, imaging, and pathology. **Why Chest X-ray is the Correct Answer:** A Chest X-ray (CXR) is **not a diagnostic tool** for the primary breast tumor itself. It cannot differentiate between benign and malignant breast tissue, nor can it visualize the internal architecture of the breast. In the context of breast cancer, a CXR is used only as a **staging investigation** to look for distant pulmonary metastases or pleural effusion, rather than for diagnosing the primary lesion. **Why the other options are incorrect:** * **Mammography (D):** This is the gold standard screening and diagnostic imaging modality for women over 35–40 years. It identifies microcalcifications and architectural distortions. * **USG (C):** The investigation of choice for women under 30, pregnant women, and for differentiating between cystic and solid lesions. It also guides interventional procedures. * **Biopsy (B):** Specifically, **Core Needle Biopsy (CNB)** is the definitive diagnostic test. It provides histological details, including tumor grade and receptor status (ER/PR/HER2), which are essential for planning treatment. **Clinical Pearls for NEET-PG:** * **Triple Assessment:** Clinical Examination + Imaging (USG/Mammography) + Pathology (FNAC/Core Biopsy). It has a diagnostic accuracy of >99%. * **Gold Standard for Diagnosis:** Core Needle Biopsy (preferred over FNAC as it preserves tissue architecture). * **BIRADS Scoring:** Used in Mammography to communicate the risk of malignancy (BIRADS 1: Normal; BIRADS 5: Highly suggestive of malignancy). * **MRI Breast:** The most sensitive imaging for detecting breast cancer, especially in patients with BRCA mutations or breast implants.

Q: What is the best chemotherapy regimen for carcinoma of the breast?

Cyclophosphamide, adriamycin, 5-fluorouracil. **Explanation:** The treatment of breast cancer frequently utilizes polychemotherapy to improve survival rates. The combination of **Cyclophosphamide, Adriamycin (Doxorubicin), and 5-Fluorouracil (CAF)** is a classic, highly effective anthracycline-based regimen. 1. **Why Option A is correct:** * **Cyclophosphamide:** An alkylating agent that cross-links DNA. * **Adriamycin (Doxorubicin):** An anthracycline that inhibits topoisomerase II and generates free radicals. Anthracyclines are considered the "backbone" of breast cancer chemotherapy due to their superior efficacy in reducing recurrence. * **5-Fluorouracil:** An antimetabolite that inhibits thymidylate synthase. The CAF (or FAC) regimen has historically been the standard of care before the widespread introduction of taxanes (Paclitaxel/Docetaxel). 2. **Why other options are incorrect:** * **Option B & C:** Cisplatin is primarily used in triple-negative breast cancer (TNBC) or germline BRCA mutations, but it is not part of the standard first-line regimen for general breast carcinoma. * **Option D:** Methotrexate was part of the older CMF regimen (Cyclophosphamide, Methotrexate, 5-FU), but it is generally less effective than anthracycline-based regimens like CAF. Steroids are supportive (anti-emetics) but not primary chemotherapeutic agents. **High-Yield Clinical Pearls for NEET-PG:** * **Cardiotoxicity:** Adriamycin is notorious for dose-dependent irreversible dilated cardiomyopathy. Monitor with ECHO (LVEF). * **Hemorrhagic Cystitis:** Associated with Cyclophosphamide; prevented by hydration and **MESNA**. * **Taxanes:** Modern regimens often add Taxanes (e.g., AC → T) for node-positive or high-risk disease. * **Trastuzumab (Herceptin):** Specifically used for **HER2/neu positive** patients; note that it also carries a risk of reversible cardiotoxicity.

Q: A patient presents 1 month after a benign right breast biopsy with a lateral subcutaneous cord felt just under the skin and causing pain. What is the etiology of this condition?

Superficial thrombophlebitis. **Explanation:** The clinical presentation of a palpable, tender, subcutaneous "cord-like" structure following breast surgery or trauma is classic for **Mondor’s Disease**, which is **superficial thrombophlebitis** of the veins of the breast and anterior chest wall. It most commonly involves the lateral thoracic vein, superior epigastric vein, or thoracoepigastric vein. **Why the correct answer is right:** * **Superficial Thrombophlebitis (Mondor’s Disease):** This is a benign, self-limiting condition. The "cord" represents a thrombosed vein. It typically presents 2–6 weeks after surgery (like biopsy or augmentation), trauma, or even extreme physical activity. The pain is usually acute but subsides as the cord becomes more fibrous. **Why the incorrect options are wrong:** * **Fat Necrosis:** Usually presents as a firm, irregular, painless mass following trauma. While it can mimic carcinoma clinically, it does not present as a longitudinal subcutaneous cord. * **Infection:** Post-operative infections (abscess or mastitis) present with systemic symptoms (fever), localized warmth, erythema, and fluctuance, rather than a distinct, non-erythematous cord. * **Suture Granuloma:** This is a localized inflammatory response to suture material, presenting as a small, firm nodule at the site of the incision, not a linear cord extending across the breast. **NEET-PG High-Yield Pearls:** * **Management:** Mondor’s disease is **self-limiting**. Treatment is conservative with NSAIDs and warm compresses. Anticoagulants are NOT indicated. * **Physical Sign:** The "Iron Wire" sign—the cord may become more prominent when the patient raises their arm. * **Association:** While usually benign/traumatic, in rare cases, it can be a marker for underlying breast malignancy; hence, a follow-up mammogram is often advised if not recently performed.

Q: Pathological nipple discharge is most commonly associated with which of the following?

Duct papilloma. **Explanation:** Nipple discharge is classified as **pathological** if it is spontaneous, unilateral, and arises from a single duct. The most common cause of such discharge (especially if bloody or serosanguinous) is an **Intraductal Papilloma**. 1. **Why Duct Papilloma is Correct:** Intraductal papillomas are benign, finger-like epithelial proliferations within the lactiferous ducts. Because these growths are fragile and highly vascular, they tend to bleed easily into the ductal lumen, leading to the classic presentation of a **spontaneous, bloody nipple discharge** in women aged 30–50. It is typically non-palpable and located in the subareolar region. 2. **Why the Other Options are Incorrect:** * **Fibroadenoma:** This is the most common benign breast tumor ("breast mouse"), but it arises from the terminal duct lobular unit (TDLU) and presents as a firm, mobile mass, not with nipple discharge. * **Adenocarcinoma (Invasive Ductal Carcinoma):** While malignancy is the second most common cause of pathological discharge (approx. 5-15% of cases), it is less frequent than papilloma. Malignant discharge is more likely to be associated with a palpable mass or skin changes. * **Lobular Carcinoma:** This often presents as an occult, multifocal, or bilateral thickening rather than a discrete mass or nipple discharge. **High-Yield Clinical Pearls for NEET-PG:** * **Most common cause of bloody nipple discharge:** Intraductal Papilloma. * **Most common cause of milky discharge (Galactorrhea):** Prolactinoma (Pituitary adenoma). * **Investigation of choice:** Triple assessment (Clinical exam + Imaging + Cytology/Biopsy). For single-duct discharge, **Microdochectomy** (removal of the involved duct) is both diagnostic and therapeutic. * **Amniotic fluid-like/Greenish discharge:** Usually associated with **Mammary Duct Ectasia**.

Question 1

What is true about Paget's disease of the nipple?

Accepted Answer

There is always underlying carcinoma.

Answer

Eczema of the nipple is often bilateral.

Answer

Histology reveals giant cells.

Answer

It is highly malignant.

Question 2

What is the most common type of cancer found in the male breast?

Accepted Answer

Infiltrating ductal carcinoma

Answer

Lobular carcinoma in situ

Answer

Ductal carcinoma in situ

Answer

None of the above

Question 3

Which of the following is a complication of mastectomy?

Accepted Answer

All of the above

Answer

Seroma

Answer

Long thoracic nerve palsy

Answer

Angiosarcoma

Question 4

Which is a distressing complication after modified radical mastectomy?

Accepted Answer

Lymphedema

Answer

Axillary vein thrombosis

Answer

Seroma

Answer

Death

Question 5

What is the LEAST diagnostic test for breast tumours?

Accepted Answer

Chest X-ray

Answer

Biopsy

Answer

USG

Answer

Mammography

Question 6

What is the best chemotherapy regimen for carcinoma of the breast?

Accepted Answer

Cyclophosphamide, adriamycin, 5-fluorouracil

Answer

Methotrexate, cisplatin

Answer

Cisplatin, adriamycin, steroid

Answer

Methotrexate, adriamycin, steroid

Question 7

What is the commonest carcinoma of the breast with multifocal origin?

Accepted Answer

Ductal carcinoma

Answer

Schirrhous carcinoma

Answer

Adenocystic carcinoma

Answer

Lobular carcinoma

Question 8

A patient presents 1 month after a benign right breast biopsy with a lateral subcutaneous cord felt just under the skin and causing pain. What is the etiology of this condition?

Accepted Answer

Superficial thrombophlebitis

Answer

Fat necrosis

Answer

Infection

Answer

Suture granuloma

Question 9

Pathological nipple discharge is most commonly associated with which of the following?

Accepted Answer

Duct papilloma

Answer

Fibroadenoma

Answer

Adenocarcinoma

Answer

Lobular carcinoma

Question 10

A 17-year-old male develops a painless, firm mass beneath the nipple of his left breast. The mass is mobile, and no fluid can be expressed from the breast. The right breast is normal to examination. Which of the following conditions does this mass most likely represent?

Accepted Answer

Gynecomastia

Answer

Fibrocystic changes

Answer

Intraductal papilloma

Answer

Invasive duct carcinoma

Breast Surgery — MCQs

Breast Surgery — MCQs

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