Breast Surgery Practice Questions

Q: Following surgical removal of a firm nodular cancerous swelling in the right breast and exploration of the right axilla, the patient was found to have a winged right scapula. This complication occurred due to injury to which of the following nerves?

Long thoracic nerve. **Explanation:** The clinical presentation of a **winged scapula** following axillary dissection is a classic complication resulting from injury to the **Long Thoracic Nerve (Nerve of Bell)**. **1. Why the Correct Answer is Right:** The long thoracic nerve (C5-C7) runs along the lateral chest wall on the superficial surface of the **serratus anterior muscle**. During axillary lymph node dissection (ALND) or mastectomy, this nerve is vulnerable to traction or transection. The serratus anterior is responsible for protracting the scapula and holding its medial border against the posterior thoracic wall. Paralysis of this muscle causes the medial border of the scapula to protrude posteriorly, especially when the patient pushes against a wall, leading to the "winged" appearance. **2. Why the Other Options are Incorrect:** * **Subscapular nerve:** Innervates the subscapularis and teres major muscles. Injury leads to weakness in internal rotation and adduction of the arm, not winging. * **Axillary nerve:** Innervates the deltoid and teres minor. Injury (often due to shoulder dislocation or humeral neck fractures) results in loss of shoulder abduction and sensory loss over the "regimental badge" area. * **Suprascapular nerve:** Innervates the supraspinatus and infraspinatus. Injury leads to weakness in initiating abduction and external rotation. **3. NEET-PG High-Yield Pearls:** * **Nerve to Serratus Anterior:** Long Thoracic Nerve (C5, C6, C7—"5, 6, 7 go to heaven"). * **Nerve to Latissimus Dorsi:** Thoracodorsal nerve. Injury during surgery results in weakness of extension, adduction, and internal rotation (difficulty climbing or using a crutch). * **Intercostobrachial nerve:** Most commonly injured nerve during axillary clearance; injury causes numbness/paresthesia of the inner aspect of the upper arm.

Q: A 21-year-old unmarried woman presents with premenstrual breast fullness and pain. What is the most likely diagnosis?

Fibroadenosis. **Explanation:** **1. Why Fibroadenosis is the Correct Answer:** Fibroadenosis (also known as **Fibrocystic Change** or ANDI - Aberrations of Normal Development and Involution) is the most common cause of breast symptoms in young women. The hallmark of this condition is **cyclical mastalgia** (breast pain) and **premenstrual fullness/heaviness**. It is driven by an exaggerated response of the breast tissue to hormonal fluctuations (estrogen excess or progesterone deficiency) during the menstrual cycle. Symptoms typically peak just before menstruation and subside once the period begins. **2. Why Other Options are Incorrect:** * **Galactocele:** This is a milk-containing cyst that occurs in **lactating** women or shortly after weaning. It presents as a painless, fluctuant mass, not cyclical pain. * **Fibroadenoma:** Known as the "Breast Mouse," it is a painless, highly mobile, firm, and well-defined lump. While common in this age group, it does not typically present with cyclical premenstrual fullness or pain. * **Mastitis:** This is an inflammatory/infectious condition characterized by acute pain, redness, warmth, and systemic symptoms like fever. It is most commonly associated with breastfeeding (lactational mastitis). **3. Clinical Pearls for NEET-PG:** * **ANDI Classification:** Fibroadenosis is considered a physiological variation (ANDI) rather than a true disease. * **Management:** Reassurance is the first line. For severe pain, evening primrose oil (Gamma-linolenic acid) or Danazol (in refractory cases) may be used. * **Differential:** If the pain is non-cyclical and localized, always rule out a breast abscess or underlying malignancy (though rare in this age group). * **Key Buzzwords:** "Cyclical mastalgia," "Premenstrual heaviness," and "Lumpy-bumpy breast" all point toward Fibroadenosis.

Q: What is the management of cystic sarcoma phylloides in a young female?

Wide excision with a margin. **Explanation:** **Phyllodes Tumor (Cystic Sarcoma Phyllodes)** is a fibroepithelial tumor of the breast that resembles a giant fibroadenoma but carries a risk of malignancy. 1. **Why Option A is Correct:** The standard of care for Phyllodes tumor, regardless of whether it is benign, borderline, or malignant, is **Wide Local Excision (WLE)** with a clear margin of at least **1 cm**. This is because these tumors have a high propensity for local recurrence if the margins are involved. Since Phyllodes tumors spread via the bloodstream (hematogenous) rather than the lymphatic system, routine axillary lymph node dissection is not required. 2. **Why Other Options are Incorrect:** * **B & C (Chemo/Radiotherapy):** Phyllodes tumors are generally resistant to chemotherapy and radiotherapy. These modalities are reserved only for palliative care or rare, recurrent malignant cases; they are not part of the primary management. * **D (Modified Mastectomy):** This is overly aggressive for a young female. Simple mastectomy is only indicated if the tumor is so large that a 1 cm margin cannot be achieved without compromising the cosmetic outcome (tumor-to-breast ratio). **High-Yield Clinical Pearls for NEET-PG:** * **Leaf-like pattern:** The name "Phyllodes" comes from the Greek word for "leaf-like," referring to the characteristic histological appearance of stromal overgrowth. * **Age Group:** Typically presents in women aged 35–50 (older than the typical fibroadenoma age). * **Clinical Feature:** Rapidly enlarging, painless, mobile mass; may cause skin necrosis due to pressure, but rarely involves the nipple-areola complex. * **Metastasis:** If malignant, it most commonly spreads to the **Lungs**. * **Diagnosis:** Triple assessment is key, but Core Needle Biopsy is preferred over FNAC (FNAC cannot reliably distinguish between fibroadenoma and Phyllodes).

Q: Virchow's node is seen in which anatomical location?

Left supraclavicular fossa. **Explanation:** **Virchow’s node** (also known as Troisier’s sign) refers to a palpable, firm, enlarged lymph node in the **left supraclavicular fossa**. **Why the Left Supraclavicular Fossa?** The anatomical basis for this location is the **Thoracic Duct**. The thoracic duct drains lymph from most of the body (abdomen, pelvis, and lower limbs) and ascends to empty into the junction of the left internal jugular and subclavian veins. Malignancies, most commonly **Gastric Adenocarcinoma**, can metastasize via the thoracic duct to these sentinel nodes. The presence of this node often indicates advanced, inoperable intra-abdominal malignancy. **Analysis of Incorrect Options:** * **Anterior mediastinum:** This area contains the thymus and lymph nodes that typically drain the heart, lungs, and thyroid; it is not the site for Virchow’s node. * **Posterior triangle of neck:** While the supraclavicular fossa is technically in the lower part of the neck, Virchow's node is specifically localized to the supraclavicular region (Level Vb) rather than the general posterior triangle. * **Inguinal region:** Enlargement here (e.g., Cloquet’s node) typically indicates pathology in the lower extremities, perineum, or anal canal. **Clinical Pearls for NEET-PG:** * **Troisier’s Sign:** The clinical finding of a palpable Virchow’s node. * **Sister Mary Joseph’s Nodule:** Periumbilical lymphadenopathy associated with metastatic intra-abdominal malignancy. * **Irish’s Node:** Left axillary lymph node enlargement associated with gastric cancer. * **Krukenberg Tumor:** Metastasis of gastric cancer to the ovaries. * **Differential:** While gastric cancer is the classic cause, Virchow’s node can also be seen in cancers of the pancreas, testis, and kidneys.

Q: Which of the following is NOT true about papillary carcinoma of the breast?

It is typically a large tumor.. **Explanation:** Papillary carcinoma of the breast is a rare subtype of invasive ductal carcinoma, accounting for approximately 1–2% of all breast cancers. **Why Option B is the correct answer (The False Statement):** Contrary to many other invasive breast malignancies, papillary carcinoma is typically a **small tumor**, often measuring less than 2–3 cm at the time of diagnosis. While it can occasionally present as a large cystic mass (intracystic papillary carcinoma), the classic invasive form is characterized by its small size and slow growth rate. **Analysis of other options:** * **Option A (True):** This carcinoma predominantly affects postmenopausal women, with a peak incidence in the **seventh decade** (60–70 years). This is older than the average age for standard infiltrating ductal carcinoma (NOS). * **Option C (True):** One of the hallmark features of papillary carcinoma is its **indolent nature**. It has a significantly lower frequency of axillary lymph node involvement compared to other invasive types, contributing to its excellent overall prognosis. **NEET-PG High-Yield Pearls:** * **Clinical Presentation:** Often presents as a subareolar mass; may be associated with bloody nipple discharge (though more common in benign intraductal papillomas). * **Histology:** Characterized by finger-like projections (papillae) with fibrovascular cores lined by epithelial cells. A key diagnostic feature is the **absence of a myoepithelial layer** within the papillae. * **Prognosis:** It carries one of the best prognoses among breast cancers, with a 10-year survival rate exceeding 90%. * **Triple Negative Status:** It is frequently Estrogen Receptor (ER) and Progesterone Receptor (PR) positive, further contributing to its favorable outcome.

Q: What is true about the lymphatic spread of breast cancer?

All of the above.. The lymphatic drainage of the breast is a critical concept in surgical oncology, as it dictates the staging and surgical management of breast cancer. **Explanation of the Correct Answer:** The correct answer is **D (All of the above)** because breast cancer follows predictable yet multi-directional lymphatic pathways: * **Option A:** Approximately **75% of the lymph** from the breast drains into the **axillary lymph nodes**. Consequently, they are the most common site of regional metastasis. * **Option B:** The remaining **25% of lymph** (primarily from the medial and deep quadrants) drains into the **internal mammary lymph nodes** located along the sternal border. Involvement here is significant for prognosis and radiotherapy planning. * **Option C:** Lymphatic spread to the **supraclavicular nodes** usually occurs after the involvement of axillary nodes (Level III) or via the internal mammary chain. This occurs through **lymphatic embolization**, where tumor cells travel as "emboli" through the vessels. **Clinical Pearls for NEET-PG:** * **Berg’s Levels of Axillary Nodes:** Defined by their relation to the **Pectoralis Minor** muscle: * *Level I:* Lateral to the muscle. * *Level II:* Behind the muscle (includes Rotter’s nodes). * *Level III:* Medial/Superior to the muscle. * **Sentinel Lymph Node Biopsy (SLNB):** The gold standard for axillary staging in clinically node-negative (cN0) patients. * **Rotter’s Nodes:** Interpectoral nodes located between the pectoralis major and minor muscles. * **Staging Note:** Involvement of supraclavicular nodes is classified as **N3** (Regional) in the AJCC 8th edition, not distant metastasis (M1).

Question 1

Following surgical removal of a firm nodular cancerous swelling in the right breast and exploration of the right axilla, the patient was found to have a winged right scapula. This complication occurred due to injury to which of the following nerves?

Accepted Answer

Long thoracic nerve

Answer

Subscapular nerve

Answer

Axillary nerve

Answer

Suprascapular nerve

Question 2

All of the following are true about Paget disease of the breast except:

Accepted Answer

1% are associated with underlying invasive carcinoma of the breast.

Answer

It is hormone receptor negative.

Answer

It has a poor prognosis.

Answer

A wedge or punch biopsy of the nipple is taken for diagnosis.

Question 3

A 21-year-old unmarried woman presents with premenstrual breast fullness and pain. What is the most likely diagnosis?

Accepted Answer

Fibroadenosis

Answer

Galactocele

Answer

Fibroadenoma

Answer

Mastitis

Question 4

A 53-year-old waitress inquires about the implications of positive estrogen receptors (ER+) in an invasive carcinoma that was excised from her left breast. What should she be informed of?

Accepted Answer

Estrogen receptor (ER) and progesterone receptor (PR) status should be determined in all cases of breast carcinoma.

Answer

Positive estrogen receptors are more often found in patients under 50 years of age.

Answer

If the receptors are positive, antiestrogen therapy is not indicated.

Answer

If the receptors are positive, the prognosis is more unfavorable.

Question 5

What is the management of cystic sarcoma phylloides in a young female?

Accepted Answer

Wide excision with a margin

Answer

Wide excision and chemotherapy

Answer

Wide excision and radiotherapy

Answer

Modified mastectomy

Question 6

Virchow's node is seen in which anatomical location?

Accepted Answer

Left supraclavicular fossa

Answer

Anterior mediastinum

Answer

Posterior triangle of neck

Answer

Inguinal region

Question 7

Which of the following is a method for conservative treatment of breast cancer?

Accepted Answer

Treatment is based on the relative size of the breast tumor.

Answer

Radiotherapy is administered.

Answer

Chemotherapy is administered.

Answer

Surgery is considered the best modality of treatment.

Question 8

Which of the following is NOT true about papillary carcinoma of the breast?

Accepted Answer

It is typically a large tumor.

Answer

It typically presents in the seventh decade of life.

Answer

It has a low frequency of axillary lymph node metastases.

Answer

None of the above.

Question 9

Which of the following are hormonal therapies used in breast cancer?

Accepted Answer

LHRH analogue

Answer

Danazol

Answer

Cyproterone acetate

Answer

Tamoxifen

Question 10

What is true about the lymphatic spread of breast cancer?

Accepted Answer

All of the above.

Answer

Axillary lymph nodes are most commonly involved.

Answer

Internal mammary lymph nodes can also be involved.

Answer

Spread to supraclavicular lymph nodes can occur by lymphatic embolization.

Breast Surgery — MCQs

Breast Surgery — MCQs

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