Breast Surgery Practice Questions

Q: Which structures are preserved in Scanlon's modified radical mastectomy?

Lateral pectoral nerves. In Modified Radical Mastectomy (MRM), the goal is to remove the entire breast tissue, the nipple-areola complex, and the axillary lymph nodes while preserving the pectoral muscles. **Explanation of the Correct Option:** **Scanlon’s modification** (also known as the Patey modification) involves the removal of both the breast and the **Pectoralis minor** muscle (or its reflection) to gain better access to Level III axillary lymph nodes. During this procedure, the **Lateral Pectoral Nerve** (which arises from the lateral cord and supplies the Pectoralis major) must be preserved to prevent atrophy of the Pectoralis major muscle. Preserving this nerve ensures the functional and aesthetic integrity of the chest wall. **Why other options are incorrect:** * **Level II nodes:** In any MRM (Scanlon, Patey, or Auchincloss), Level I and II axillary nodes are routinely removed for staging and treatment. * **Pectoral fascia:** This is the deep surgical margin. It is always removed along with the breast tissue to ensure oncological clearance. * **Nipple and Areola:** These are removed in a standard MRM. They are only preserved in "Nipple-Sparing Mastectomies," which are distinct from the Scanlon procedure. **High-Yield NEET-PG Pearls:** * **Auchincloss Modification:** Preserves both Pectoralis major and minor (most common MRM). * **Patey Modification:** Removes Pectoralis minor to clear Level III nodes. * **Long Thoracic Nerve (Nerve to Serratus Anterior):** Injury leads to "Winging of Scapula." * **Thoracodorsal Nerve (Nerve to Latissimus Dorsi):** Injury leads to weak adduction and internal rotation of the arm.

Q: A 65-year-old female, who underwent a right radical mastectomy 10 years ago, now presents with multiple subcutaneous nodules in her right upper limb. What is the most probable diagnosis?

Lymphangiosarcoma. ### Explanation **Correct Answer: A. Lymphangiosarcoma** The clinical scenario describes **Stewart-Treves Syndrome**, a rare but classic complication of chronic lymphedema. **Why it is correct:** Lymphangiosarcoma is a malignant tumor of the lymphatic vessels. It typically occurs in patients who have undergone a **Radical Mastectomy** (which involves axillary lymph node dissection) followed by chronic, long-standing lymphedema of the ipsilateral arm. The latency period is usually long, typically **10 years or more** after the initial surgery. Clinically, it presents as multiple bluish-red subcutaneous nodules or plaques that may ulcerate. **Why incorrect options are wrong:** * **B. Multiple lipomas:** These are benign fatty tumors. While they are common subcutaneous nodules, they are not associated with post-mastectomy lymphedema or the specific timeline/location described. * **C. Varicosities:** These are dilated, tortuous veins. While lymphedema involves fluid stasis, it does not typically present as "multiple subcutaneous nodules" in the upper limb following cancer surgery. **NEET-PG High-Yield Pearls:** * **Stewart-Treves Syndrome:** Defined as lymphangiosarcoma arising in a limb with chronic lymphedema (most commonly post-mastectomy). * **Latency:** Usually develops **10–15 years** after surgery. * **Clinical Presentation:** Look for "bruise-like" patches or "purple-red nodules" on a swollen arm. * **Prognosis:** Extremely poor due to early hematogenous spread (often to the lungs). * **Treatment:** Aggressive surgical resection or limb amputation is often required, though palliative care is common due to late presentation.

Q: All of the following regarding cystosarcoma phyllodes are true EXCEPT:

It arises from a single epithelial cell type.. **Explanation:** **Phyllodes Tumor (Cystosarcoma Phyllodes)** is a rare fibroepithelial breast tumor. The correct answer is **C** because Phyllodes tumors are **biphasic tumors**, meaning they arise from both **epithelial and stromal (mesenchymal)** components. In contrast to fibroadenomas, the stroma in Phyllodes is hypercellular and is the component that determines the malignant potential. **Analysis of Options:** * **Option A (True):** Grossly, the tumor exhibits a "leaf-like" appearance (Phyllon = leaf) due to the overgrowth of stroma projecting into the ductal spaces, creating clefts and slits on the cut surface. * **Option B (True):** For malignant Phyllodes, **Simple Mastectomy** is often the preferred treatment, especially if the tumor is large or if clear margins (at least 1 cm) cannot be achieved with breast-conserving surgery. * **Option D (True):** FNAC and Core Needle Biopsy often fail to differentiate Phyllodes from a cellular fibroadenoma. Therefore, **Excision Biopsy** (Wide Local Excision) is the gold standard for definitive diagnosis and treatment of benign variants. **High-Yield Clinical Pearls for NEET-PG:** * **Age Group:** Typically occurs in women aged 40–50 years (older than the typical fibroadenoma age). * **Metastasis:** Unlike breast cancer, malignant Phyllodes spreads via the **hematogenous route** (most commonly to the lungs). Axillary lymph node involvement is rare (<5%), so routine lymph node dissection is not required. * **Treatment Rule:** Wide Local Excision with a **1 cm margin** is the standard. If the tumor-to-breast ratio is high, mastectomy is performed. * **Grading:** Classified by the WHO into Benign, Borderline, and Malignant based on stromal cellularity, atypia, and mitotic count.

Q: What sign is typically seen in large duct papilloma?

Nipple discharge. **Explanation:** **Intraductal Papilloma** is the most common cause of spontaneous, bloody nipple discharge in women. It is a benign proliferative lesion occurring within the lactiferous ducts. 1. **Why Nipple Discharge is Correct:** Large duct papillomas (solitary) typically arise in the **subareolar region** within the major lactiferous ducts. Because these lesions are fragile and highly vascular, they bleed easily into the ductal system. This manifests clinically as a **spontaneous, serosanguinous, or bloody discharge** from a single duct orifice. 2. **Why Other Options are Incorrect:** * **Breast Mass:** While a large papilloma can occasionally be felt as a small subareolar lump, it is usually too small (often <0.5 cm) to be palpable. A mass is more characteristic of fibroadenomas or carcinomas. * **Skin Excoriation:** This is typically seen in Paget’s disease of the breast or severe eczema, not in intraductal lesions. * **Lymph Node Involvement:** This is a hallmark of malignant processes (metastasis). Intraductal papilloma is a benign condition and does not spread to lymph nodes. **High-Yield NEET-PG Pearls:** * **Investigation of Choice:** Microdochectomy (excision of the involved duct) is both diagnostic and therapeutic. * **Triple Assessment:** Always perform imaging (Mammography/Ultrasound) to rule out underlying malignancy, though papillomas are often invisible on standard mammograms. * **Galactography:** Historically used to show a "filling defect," but now largely replaced by ductoscopy or high-resolution USG. * **Solitary vs. Multiple:** Solitary papillomas (large duct) carry a minimal risk of malignancy, whereas **multiple papillomas** (small duct/peripheral) are associated with a higher risk of developing breast cancer.

Q: What is the most important prognostic factor in breast cancer?

Lymph node status. **Explanation:** In breast cancer, the **axillary lymph node status** is the single most important independent prognostic factor. The presence and number of involved nodes directly correlate with the risk of distant metastasis and overall survival. While tumor biology (like grade or receptors) dictates the type of treatment, the extent of nodal involvement remains the most reliable predictor of the patient's long-term outcome. **Analysis of Options:** * **A. Lymph node status (Correct):** It is the most significant prognostic indicator. A patient with zero positive nodes has a significantly higher 10-year survival rate compared to one with four or more involved nodes. * **B. Tumor size:** This is the second most important prognostic factor. While larger tumors generally have a worse prognosis, a small tumor with positive nodes carries a poorer prognosis than a larger tumor with negative nodes. * **C. Progesterone receptor (PR) status:** This is a **predictive factor** (indicating response to hormonal therapy) rather than the primary prognostic factor. While Triple Negative Breast Cancer (TNBC) has a worse prognosis, nodal status still overrides receptor status in staging and survival prediction. * **D. Stage:** While the TNM stage as a whole is used to determine prognosis, the question asks for the *individual* factor. Within the TNM system, the 'N' (node) component carries the most weight for survival. **Clinical Pearls for NEET-PG:** * **Most important prognostic factor:** Axillary lymph node status. * **Most important factor for recurrence:** Number of axillary lymph nodes involved. * **Sentinel Lymph Node Biopsy (SLNB):** The gold standard for axillary staging in clinically node-negative (cN0) patients. * **Triple Negative Breast Cancer:** Associated with the worst prognosis among molecular subtypes.

Q: A patient presents with a 1.2 cm breast lump and three palpable lymph nodes in the ipsilateral axilla. The lymph nodes are fixed, and there is no evidence of distant metastasis. According to the AJCC staging system, what is the stage of this patient's disease?

T1N2aM0. ### Explanation The staging of breast cancer follows the **AJCC TNM system**. To determine the correct stage, we must evaluate the Tumor (T), Node (N), and Metastasis (M) components based on the clinical findings provided. **1. Why T1N2aM0 is correct:** * **T (Tumor):** The lump is **1.2 cm**. T1 is defined as a tumor ≤ 2 cm in greatest dimension. Specifically, this is T1c (>1 cm to ≤2 cm). * **N (Node):** The patient has palpable, **fixed** ipsilateral axillary lymph nodes. According to AJCC, **N2a** is defined as metastases in ipsilateral unresectable **fixed** or matted axillary lymph nodes. * **M (Metastasis):** There is no evidence of distant metastasis, categorized as **M0**. Combining these gives **T1N2aM0**. **2. Why other options are incorrect:** * **A (T1N0M0):** Incorrect because N0 implies no regional lymph node metastasis, but this patient has palpable, fixed nodes. * **B (T1N1M0):** Incorrect because N1 refers to **mobile** (not fixed) level I/II axillary lymph nodes. The presence of "fixed" nodes upgrades the stage to N2a. * **D (T2N1M0):** Incorrect because T2 requires a tumor size > 2 cm but ≤ 5 cm (this lump is only 1.2 cm). Additionally, N1 does not account for the "fixed" nature of the nodes. **Clinical Pearls for NEET-PG:** * **N1:** Mobile ipsilateral axillary nodes. * **N2a:** Fixed or matted ipsilateral axillary nodes. * **N3a:** Metastasis in ipsilateral infraclavicular lymph nodes. * **N3b:** Metastasis in ipsilateral internal mammary and axillary nodes. * **N3c:** Metastasis in ipsilateral supraclavicular lymph nodes. * **High-Yield:** Any "fixed" node automatically moves the staging to at least N2, regardless of the number of nodes.

Q: A 25-year-old female presents with a rubbery, movable nodule in her left breast during the menstrual cycle. What is the most likely diagnosis?

Fibroadenoma. ### Explanation **Correct Answer: B. Fibroadenoma** **Why it is correct:** Fibroadenoma is the most common benign breast tumor in young women (typically aged 15–30). The clinical description of a **"rubbery, movable nodule"** is the classic presentation. These tumors are often referred to as the **"Breast Mouse"** because they are highly mobile and slip away under the examining fingers. They are estrogen-sensitive, which explains why they may become more prominent or symptomatic during the menstrual cycle or pregnancy. **Why the other options are incorrect:** * **Phyllodes Tumor:** While also mobile, these typically occur in an older age group (40–50s) and are characterized by rapid growth and a much larger size. Histologically, they show a "leaf-like" pattern and increased stromal cellularity. * **Intraductal Papilloma:** This is the most common cause of **bloody nipple discharge**. It is usually a small, subareolar lesion that is often not palpable as a distinct "rubbery" mass. * **Carcinoma of the Breast:** Malignant lesions are typically hard, painless, fixed to the skin or underlying muscle (not movable), and have irregular margins. They are less common in a 25-year-old compared to fibroadenomas. **NEET-PG High-Yield Pearls:** * **Investigation of Choice:** In a woman <30 years, the initial investigation is **Ultrasound (USG)**. Mammography is avoided due to dense breast tissue. * **Triple Assessment:** Includes Clinical Examination, Imaging (USG/Mammography), and Pathology (FNAC/Core Needle Biopsy). * **Histology:** Fibroadenomas show two patterns: **Intracanalicular** (stroma compresses ducts into slits) and **Pericanalicular** (ducts remain patent). * **Management:** Conservative management is preferred if the diagnosis is certain; surgical excision is indicated if the mass is >3 cm, rapidly enlarging, or if the patient is anxious.

Question 1

Which structures are preserved in Scanlon's modified radical mastectomy?

Accepted Answer

Lateral pectoral nerves

Answer

Level II nodes in the axilla

Answer

Pectoral fascia

Answer

Nipple and the areola

Question 2

A 65-year-old female, who underwent a right radical mastectomy 10 years ago, now presents with multiple subcutaneous nodules in her right upper limb. What is the most probable diagnosis?

Accepted Answer

Lymphangiosarcoma

Answer

Multiple lipomas

Answer

Varicosities

Answer

None of the above

Question 3

A 64-year-old male is to undergo an elective laparotomy. The proposed wound is considered "clean-contaminated." What wound characteristic does this indicate?

Accepted Answer

Entry of the genitourinary or respiratory tract without significant spillage

Answer

Gross spillage from the gastrointestinal tract

Answer

Entry into non-infected or uninfected tissue with no inflammation

Answer

Entry into pre-existing infected or contaminated tissue

Question 4

All of the following regarding cystosarcoma phyllodes are true EXCEPT:

Accepted Answer

It arises from a single epithelial cell type.

Answer

The cut surface appears leaf-like.

Answer

Mastectomy is the preferred treatment for malignant tumors.

Answer

Excision biopsy is used for diagnosis in benign tumors.

Question 5

Arrange the incidence of various types of breast cancers in increasing order.

Accepted Answer

BRCA1

Answer

PTEN (Cowden disease)

Answer

Sporadic breast cancer

Answer

Hereditary breast cancer

Question 6

What is the treatment for hormone-dependent fungating carcinoma of the breast with lung secondaries in a 30-year-old female patient?

Accepted Answer

Simple mastectomy followed by oophorectomy

Answer

Radical mastectomy followed by oophorectomy

Answer

Adrenalectomy

Answer

Lumpectomy followed by castration

Question 7

What sign is typically seen in large duct papilloma?

Accepted Answer

Nipple discharge

Answer

Breast mass

Answer

Skin excoriation

Answer

Lymph node involvement

Question 8

What is the most important prognostic factor in breast cancer?

Accepted Answer

Lymph node status

Answer

Tumor size

Answer

Progesterone receptor status

Answer

Stage

Question 9

A patient presents with a 1.2 cm breast lump and three palpable lymph nodes in the ipsilateral axilla. The lymph nodes are fixed, and there is no evidence of distant metastasis. According to the AJCC staging system, what is the stage of this patient's disease?

Accepted Answer

T1N2aM0

Answer

T1N0M0

Answer

T1N1M0

Answer

T2N1M0

Question 10

A 25-year-old female presents with a rubbery, movable nodule in her left breast during the menstrual cycle. What is the most likely diagnosis?

Accepted Answer

Fibroadenoma

Answer

Phyllodes tumor

Answer

Intraductal papilloma

Answer

Carcinoma of the breast

Breast Surgery — MCQs

Breast Surgery — MCQs

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