Breast Surgery Practice Questions

Q: A 43 years presented with 4.6cm breast lump with ipsilateral mobility present, Axillary LN without distant metastasis, which stage does it belongs to?

Stage 2b. ***Stage 2b*** - This stage is defined by a tumor size of >2 cm but ≤5 cm with mobile axillary lymph nodes (T2, N1, M0). - The presentation of a **4.6 cm lump** (T2) and **ipsilateral mobile lymph nodes** (N1) with **no distant metastasis** (M0) fits the criteria for T2N1M0, which is classified as Stage 2B. *Stage 2a* - This stage typically corresponds to T0, N1, M0 or T1, N1, M0; a **4.6 cm tumor** exceeds the T1 size classification. - It does not account for the tumor size being greater than 2 cm, as T2 stage starts at >2 cm. *Stage 3c* - This stage represents **locally advanced breast cancer** and includes any tumor size with metastases to infraclavicular, supraclavicular, or specific axillary node levels (N3). - The patient has no evidence of extensive nodal involvement or **skin involvement** typical of locally advanced disease. *Stage 4* - This stage is reserved for patients with **distant metastasis** (M1), such as spread to bones, lungs, liver, or brain. - Since the patient has **no distant metastasis** as noted in the prompt, this classification is incorrect.

Q: Ductal carcinoma in situ treated with lumpectomy, and was found to have margins of 2mm, what is the next best management ?

Radiotherapy. ***Radiotherapy*** - Following **lumpectomy** (breast-conserving surgery) for **ductal carcinoma in situ (DCIS)**, adjuvant **whole-breast radiotherapy** is standard of care to significantly reduce the risk of **local recurrence**. - Even with clear margins (defined as ≥2mm in most modern guidelines), radiotherapy is recommended for patients undergoing breast-conserving therapy to improve long-term outcomes. *Mastectomy* - **Mastectomy** is generally reserved for extensive disease, multifocal or multicentric disease, or cases where clear margins cannot be achieved with breast-conserving surgery. - Since clear margins (2mm) were achieved in this case, proceeding directly to a major surgical procedure like mastectomy is overtreatment and not indicated. *BCT* - While **breast-conserving therapy (BCT)** refers to the combination of surgery (lumpectomy) and **adjuvant radiotherapy**, stating

Q: A slit-shaped nipple is seen in which of the following conditions?

Duct ectasia. **Explanation:** **Duct Ectasia** is the correct answer because of the specific pathological process involving the subareolar ducts. In this condition, the major lactiferous ducts become dilated and filled with inspissated (thickened) secretions. This leads to chronic periductal inflammation, which eventually results in **fibrosis**. As this fibrosis progresses, it causes shortening of the ducts, which pulls the nipple inward. Unlike the circular "pitting" retraction seen in malignancy, the retraction in duct ectasia typically occurs in a linear fashion, resulting in a characteristic **slit-like nipple**. **Why the other options are incorrect:** * **Duct Papilloma:** This is the most common cause of bloody nipple discharge. It typically presents as a small, non-palpable lesion within a major duct and does not usually cause nipple retraction or shape changes. * **Paget’s Disease:** This presents as an eczematous, itchy, or crusting lesion of the nipple-areola complex. While it can destroy the nipple over time, it is characterized by surface erosion rather than a slit-like deformity. * **Carcinoma of the Breast:** Malignancy causes nipple retraction due to the infiltration of the **Lactiferous ducts** or **Cooper’s ligaments**. This typically results in a fixed, deep, and often asymmetrical "pitting" or "indrawing" of the nipple, rather than a transverse slit. **Clinical Pearls for NEET-PG:** * **Duct Ectasia** is also known as **Plasma Cell Mastitis** (due to the characteristic inflammatory infiltrate). * **Nipple Discharge:** In duct ectasia, the discharge is typically thick, creamy, or "toothpaste-like" (multi-colored/greenish). * **Management:** The definitive surgical treatment for duct ectasia is **Hadfield’s operation** (Total subareolar duct excision). * **Differential:** Always differentiate from **Zuska’s Disease**, which is recurrent subareolar abscesses associated with smoking and squamous metaplasia of the ducts.

Q: Which of the following benign conditions can mimic cancer in the breast?

Fat necrosis. **Explanation:** **Fat Necrosis** is the most notorious mimic of breast carcinoma. The underlying medical concept involves the saponification of adipose tissue, usually following trauma (though trauma is only reported in 50% of cases). As the area heals by fibrosis, it forms a **hard, irregular, fixed lump** that may be associated with **skin tethering or nipple retraction**. On mammography, it can show microcalcifications or a "spiculated mass," further mimicking malignancy. Histologically, it is characterized by "foamy macrophages" and "oil cysts." **Analysis of Incorrect Options:** * **Accessory axillary breast tissue (A):** This presents as a soft, bilateral swelling in the axilla that fluctuates with hormonal changes (e.g., during menstruation or pregnancy). It lacks the hard, infiltrative features of cancer. * **Fibrocystic disease (C):** This is a spectrum of changes (cysts, fibrosis) characterized by **cyclical mastalgia** and "lumpiness." While common, it is typically diffuse and tender, unlike the painless, fixed mass of cancer. * **Granulomatous mastitis (D):** While it can present as a firm mass, it is usually associated with inflammatory signs, multiple discharging sinuses, and abscess formation, making it more likely to be confused with tuberculosis or an abscess than a primary malignancy. **High-Yield Pearls for NEET-PG:** * **Gold Standard Diagnosis:** Core Needle Biopsy is essential to differentiate fat necrosis from cancer. * **Mammographic Hallmark:** Look for **"Egg-shell calcification"** (rim calcification) in later stages of fat necrosis. * **Other Mimics:** Radial Scar (complex sclerosing lesion) and Mondor’s Disease (thrombophlebitis of superficial veins) are also important clinical mimics of breast cancer.

Q: A young female presents with a 4 cm, painless, mobile lump in her breast. What is the most likely diagnosis?

Fibroadenoma. ### Explanation **Correct Answer: C. Fibroadenoma** The clinical presentation of a **painless, firm, and highly mobile** lump in a young female is the classic description of a **Fibroadenoma**. * **Pathophysiology:** It is a benign tumor arising from the terminal duct lobular unit, characterized by an overgrowth of both glandular and stromal tissue. * **The "Breast Mouse":** Because these tumors are not fixed to the surrounding breast parenchyma or skin, they slip away under the examining fingers, earning the clinical nickname "Breast Mouse." **Why other options are incorrect:** * **A. Breast Abscess:** Typically presents with acute inflammatory signs—pain, fever, redness, and a fluctuant, tender mass. It is most common in lactating women. * **B. Breast Cyst:** While mobile, cysts are usually tense or fluctuant and often associated with cyclical mastalgia (pain) as part of fibrocystic changes. * **C. Peau d’orange:** This is a clinical sign of **Inflammatory Breast Cancer**, where the skin resembles an orange peel due to lymphatic obstruction. It indicates malignancy, not a benign mobile lump. **High-Yield Clinical Pearls for NEET-PG:** * **Most common benign tumor** of the breast in young women ( 5 cm or >500g. * **Management:** Conservative if small (<3 cm) and asymptomatic; surgical excision if increasing in size or for patient reassurance.

Q: What is the primary investigation to diagnose stage-I carcinoma of the breast?

Bilateral mammogram. ### Explanation **1. Why Bilateral Mammogram is Correct:** In Stage-I breast carcinoma (T1N0M0), the tumor is $\leq$ 2 cm, clinically node-negative, and has no distant metastasis. **Mammography** is the gold standard for the initial diagnosis and evaluation of breast lesions. It can detect non-palpable lesions, microcalcifications (pleomorphic), and architectural distortions. A **bilateral** mammogram is essential because it allows for comparison with the contralateral breast and helps exclude multicentric or synchronous tumors in the opposite breast (found in approximately 4-5% of cases). **2. Why Other Options are Incorrect:** * **B. X-ray chest:** This is a staging investigation used to look for lung metastasis. In Stage-I disease, the risk of systemic spread is extremely low, making this unnecessary for the primary diagnosis. * **C. Bone scan:** This is used to detect skeletal metastasis. It is indicated only in symptomatic patients or those with advanced stages (Stage III/IV) and elevated alkaline phosphatase. It has no role in diagnosing early-stage (Stage-I) breast cancer. * **D. Liver scan (Ultrasound/CT):** Similar to a bone scan, this is a staging tool for distant metastasis. It is not used for primary diagnosis of the breast lesion itself. **Clinical Pearls for NEET-PG:** * **Triple Assessment:** The standard protocol for any breast lump includes: (1) Clinical Examination, (2) Imaging (Mammography if >35 years, Ultrasound if <35 years), and (3) Pathology (FNAC or Core Needle Biopsy). * **Core Needle Biopsy** is preferred over FNAC as it distinguishes between *in situ* and invasive carcinoma and allows for ER/PR/HER2/neu testing. * **Screening:** Mammography is the only screening modality proven to reduce mortality in breast cancer. * **Staging:** For Stage I and II, routine systemic imaging (CT/Bone scan) is generally **not** recommended unless the patient is symptomatic.

Q: Which of the following best describes the typical presentation of a fibroadenoma of the breast?

A solitary mobile mass. **Explanation:** **Fibroadenoma** is the most common benign tumor of the female breast, typically occurring in women aged 15–35 years. It is a biphasic tumor composed of both epithelial and stromal components. **1. Why the Correct Answer is Right:** The hallmark of a fibroadenoma is its extreme mobility within the breast tissue. Because it is a well-encapsulated lesion that does not invade the surrounding stroma, it slips away from the examining fingers. This characteristic has earned it the clinical nickname **"Breast Mouse."** It typically presents as a solitary, firm, non-tender, and well-circumscribed lump. **2. Why Incorrect Options are Wrong:** * **A. A fixed mass:** Fixity to the skin or underlying pectoral fascia is a classic sign of **malignancy** (due to infiltration) or chronic inflammatory conditions like fat necrosis. * **B & C. Diffuse masses:** Fibroadenomas are discrete, localized tumors. Diffuse or ill-defined nodularity is more characteristic of **Fibrocystic Change (Androgen and Estrogen imbalance)**, where the breast feels "lumpy-bumpy," often varying with the menstrual cycle. **High-Yield Clinical Pearls for NEET-PG:** * **Mammography:** Shows a well-defined "Popcorn calcification" in older, involuting fibroadenomas. * **USG:** Typically shows a wider-than-tall, hypoechoic, well-circumscribed lesion. * **Giant Fibroadenoma:** Defined as a fibroadenoma >5 cm in size or >500g in weight. * **Phyllodes Tumor:** The most important differential diagnosis; it grows rapidly and occurs in an older age group (40+). * **Management:** Conservative management is preferred for small, asymptomatic lesions; surgical excision is indicated if the size increases or for patient reassurance.

Question 1

A 43 years presented with 4.6cm breast lump with ipsilateral mobility present, Axillary LN without distant metastasis, which stage does it belongs to?

Accepted Answer

Stage 2b

Answer

Stage 2a

Answer

Stage 3c

Answer

Stage 4

Question 2

Ductal carcinoma in situ treated with lumpectomy, and was found to have margins of 2mm, what is the next best management ?

Accepted Answer

Radiotherapy

Answer

Mastectomy

Answer

BCT

Answer

Regular follow up

Question 3

A patient underwent breast conservation surgery for a 3 cm lesion along with sentinel lymph node biopsy, which showed one-third of sentinel lymph nodes are positive for macrometastasis. What is the next step in management?

Accepted Answer

Completion axillary lymph node dissection, chemotherapy, and radiotherapy

Answer

Modified radical mastectomy with level I lymphadenectomy

Answer

Modified radical mastectomy with level III lymphadenectomy

Answer

Only chemotherapy and radiotherapy

Question 4

Which of the following statements regarding breast cancer metastasis is true?

Accepted Answer

Metastases occur after breast cancers acquire their own new blood supply.

Answer

Batson's plexus facilitates metastasis to the lungs.

Answer

Natural killer cells have a role in breast cancer immunosurveillance.

Answer

Twenty percent of women who develop breast carcinoma metastases will do so within 60 months of treatment.

Question 5

A slit-shaped nipple is seen in which of the following conditions?

Accepted Answer

Duct ectasia

Answer

Duct papilloma

Answer

Paget's disease

Answer

Carcinoma of the breast

Question 6

Which of the following benign conditions can mimic cancer in the breast?

Accepted Answer

Fat necrosis

Answer

Accessory axillary breast tissue

Answer

Fibrocystic disease

Answer

Granulomatous mastitis

Question 7

What surgical management is appropriate for Stage I and II breast cancer?

Accepted Answer

Lumpectomy and axillary clearance

Answer

Total mastectomy

Answer

Modified radical mastectomy

Answer

Lumpectomy, axillary clearance, and radiotherapy

Question 8

A young female presents with a 4 cm, painless, mobile lump in her breast. What is the most likely diagnosis?

Accepted Answer

Fibroadenoma

Answer

Breast abscess

Answer

Breast cyst

Answer

Peau d'orange

Question 9

What is the primary investigation to diagnose stage-I carcinoma of the breast?

Accepted Answer

Bilateral mammogram

Answer

X-ray chest

Answer

Bone scan

Answer

Liver scan

Question 10

Which of the following best describes the typical presentation of a fibroadenoma of the breast?

Accepted Answer

A solitary mobile mass

Answer

A fixed mass

Answer

A diffuse mass

Answer

Multiple diffuse masses

Breast Surgery — MCQs

Breast Surgery — MCQs

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