Breast Surgery Practice Questions

Q: All the following structures are preserved in modified radical mastectomy except?

Intercostobrachial nerve. In a **Modified Radical Mastectomy (MRM)**, the goal is to remove the entire breast tissue along with the axillary lymph nodes (Levels I and II), while preserving the pectoralis major and minor muscles and vital neurovascular structures. ### Why the Intercostobrachial Nerve is the Correct Answer The **intercostobrachial nerve** (the lateral cutaneous branch of the second intercostal nerve) traverses the axillary fat pad, which is removed during axillary lymph node dissection. While some surgeons attempt to preserve it to prevent sensory loss, it is **routinely sacrificed** in a standard MRM to ensure an adequate oncological clearance of the axillary contents. Injury or excision leads to numbness or paresthesia along the medial aspect of the upper arm. ### Explanation of Incorrect Options * **Subclavian Vein (A):** This forms the superior boundary of the axillary dissection. It must be preserved to maintain venous drainage of the upper limb; injury leads to severe hemorrhage or chronic lymphedema. * **Long Thoracic Nerve (C):** Also known as the Nerve of Bell, it supplies the **Serratus Anterior**. It must be preserved to avoid "Winging of the Scapula." * **Nerve to Latissimus Dorsi (D):** Also known as the Thoracodorsal nerve. It must be preserved to maintain the function of the Latissimus Dorsi, which is crucial for internal rotation and adduction of the arm. ### High-Yield Clinical Pearls for NEET-PG * **Patey’s MRM:** Removes Pectoralis minor; **Auchincloss MRM:** Preserves Pectoralis minor. * **Boundaries of Axillary Dissection:** Axillary vein (Superior), Latissimus dorsi (Lateral), Serratus anterior (Medial). * **Nerve most commonly injured in MRM:** Intercostobrachial nerve. * **Nerve most commonly injured in Axillary Clearance:** Long thoracic nerve (leading to functional deformity).

Q: Hormonal therapy is useful if breast cancer expresses which of the following?

Estrogen receptor. **Explanation:** The cornerstone of hormonal therapy in breast cancer is the presence of hormone receptors. **Estrogen Receptor (ER)** expression is the single most important predictor of response to endocrine therapies such as Selective Estrogen Receptor Modulators (SERMs like Tamoxifen) or Aromatase Inhibitors (AIs like Letrozole). These drugs work by either blocking the ER or lowering systemic estrogen levels, thereby depriving the tumor of its primary growth stimulus. * **Option A (Correct):** ER positivity is the primary indicator for hormonal therapy. Approximately 75-80% of breast cancers are ER-positive. * **Option B (Incorrect):** While **Progesterone Receptor (PR)** status is often tested alongside ER and its presence suggests a functional ER pathway (improving prognosis), the primary target and driver for initiating hormonal therapy remains the Estrogen Receptor. * **Option C (Incorrect):** **HER2/neu** is a tyrosine kinase receptor. Overexpression indicates eligibility for targeted therapy with monoclonal antibodies like **Trastuzumab**, not hormonal therapy. * **Option D (Incorrect):** **VEGF** (Vascular Endothelial Growth Factor) is involved in angiogenesis. While targeted by drugs like Bevacizumab, it is not a marker for hormonal treatment. **High-Yield Clinical Pearls for NEET-PG:** * **Best Prognostic Factor:** Number of axillary lymph nodes involved. * **Best Predictive Factor for Hormonal Response:** ER/PR status. * **Tamoxifen:** Drug of choice for ER+ tumors in **pre-menopausal** women (Risk: Endometrial carcinoma). * **Aromatase Inhibitors:** Drug of choice for ER+ tumors in **post-menopausal** women (Risk: Osteoporosis). * **Luminal A subtype** (ER+/PR+/HER2-) has the best overall prognosis.

Q: Which of the following conditions may be mistaken for carcinoma of the breast based on appearance?

Nodular mucinosis. **Explanation:** **Nodular Mucinosis** (also known as Mucocele-like lesions or focal mucinosis) is a rare benign condition characterized by the accumulation of extracellular mucin. It is the correct answer because it often presents as a **firm, irregular, and fixed mass** that clinically mimics the induration of an invasive carcinoma. On imaging (mammography/ultrasound), it can show microcalcifications or irregular margins, further complicating the clinical diagnosis and necessitating a biopsy to rule out malignancy. **Analysis of Incorrect Options:** * **Breast Abscess:** Typically presents with acute inflammatory signs—exquisite tenderness, calor (heat), rubor (redness), and fluctuation. While a chronic "cold abscess" can mimic a tumor, the acute presentation is usually distinct from the painless, progressive nature of carcinoma. * **Cystosarcoma Phylloides:** These are usually very large, smooth, and bosselated (lumpy) tumors. While they can be malignant, their rapid growth and "leaf-like" architecture on pathology distinguish them from the typical presentation of common breast carcinomas. * **Fibroadenosis (ANDI):** This is a physiological aberration (lumpy breasts) characterized by generalized heaviness and cyclical mastalgia. It lacks the discrete, hard, "stony" consistency of a carcinoma. **Clinical Pearls for NEET-PG:** * **Fat Necrosis:** This is the *most common* benign condition to mimic breast carcinoma clinically (history of trauma, skin tethering, and hard consistency). * **Plasma Cell Mastitis:** Can cause nipple retraction, another classic sign of malignancy. * **Triple Assessment:** Always remember that any suspicious lump requires clinical examination, imaging (USG/Mammography), and pathology (FNAC/Core Biopsy) to confirm the diagnosis.

Q: Patey's mastectomy is a type of:

Modified radical mastectomy. **Explanation:** **Patey’s mastectomy** is a specific technique of **Modified Radical Mastectomy (MRM)**. The core concept of MRM is the removal of the entire breast tissue along with the axillary lymph nodes, while preserving the pectoralis major muscle. 1. **Why Option C is Correct:** In Patey’s mastectomy, the **pectoralis minor muscle is sacrificed (excised)** to facilitate complete clearance of Level III axillary lymph nodes (apical nodes). However, the **pectoralis major muscle is preserved**, which distinguishes it from a radical mastectomy. This provides a better cosmetic result and reduces morbidity compared to older techniques. 2. **Why Other Options are Incorrect:** * **Simple Mastectomy:** Also known as Total Mastectomy, it involves removing the breast tissue and nipple-areola complex but **does not** include axillary lymph node dissection. * **Extended Mastectomy:** This refers to a Radical Mastectomy plus the removal of internal mammary lymph nodes. * **Halsted’s Radical Mastectomy:** This is a more aggressive procedure where **both** the pectoralis major and pectoralis minor muscles are removed along with the breast and all three levels of axillary nodes. **High-Yield Clinical Pearls for NEET-PG:** * **Auchincloss Mastectomy:** Another type of MRM where **both** pectoralis major and minor muscles are preserved. Level III nodes are usually not cleared. * **Madden’s Mastectomy:** Similar to Auchincloss; it preserves both muscles and is currently the most commonly performed MRM technique. * **Nerves at risk during MRM:** Long thoracic nerve (leads to Winging of Scapula), Thoracodorsal nerve (Latissimus dorsi weakness), and Intercostobrachial nerve (loss of sensation in the inner arm). * **Standard of Care:** MRM has largely replaced Halsted’s Radical Mastectomy because it offers similar survival rates with significantly less deformity.

Q: Fixity of the breast tissue in carcinoma of the breast indicates infiltration of what structure?

Pectoralis muscle and fascia. **Explanation:** In breast carcinoma, the mobility of the breast mass is a key clinical indicator of the extent of local invasion. **Why Pectoralis Muscle and Fascia is correct:** The breast lies upon the deep pectoral fascia, which covers the pectoralis major muscle. When a tumor is mobile, it means it is confined to the breast parenchyma. **Fixity** occurs when the tumor cells infiltrate the deep pectoral fascia and the underlying pectoralis major muscle. * **Clinical Test:** Fixity is demonstrated by asking the patient to press their hands against their hips (contracting the pectoralis major). If the lump becomes fixed or its mobility is significantly restricted during contraction, it indicates infiltration of the muscle/fascia. This upstages the tumor to **T4b** in the TNM staging system. **Analysis of Incorrect Options:** * **A. Suspensory ligaments (Cooper’s ligaments):** Infiltration of these ligaments leads to **skin dimpling** or tethering, not fixity of the entire breast tissue to the chest wall. * **B. Lymphatics:** Obstruction of the subdermal lymphatics by tumor cells leads to lymphedema of the skin, resulting in the characteristic **Peau d'orange** appearance. * **D. Internal mammary artery:** This is a vascular structure providing blood supply; its involvement relates to metastasis or surgical clearance (Level III nodes) rather than mechanical fixity of the breast tissue. **High-Yield Clinical Pearls for NEET-PG:** * **Fixity to Chest Wall:** Indicates involvement of the Serratus anterior, Ribs, or Intercostal muscles (T4a). * **Paget’s Disease:** Represents DCIS involving the nipple-areola complex; characterized by large cells with clear cytoplasm (Paget cells). * **Most Common Site:** Upper Outer Quadrant (approx. 50%). * **Retraction of Nipple:** Caused by infiltration of the lactiferous ducts.

Q: A 67-year-old business executive and tennis player has a basal cell carcinoma removed from the right cheek. What is TRUE of basal cell carcinoma?

It may show a flat ulcer.. **Explanation:** Basal Cell Carcinoma (BCC) is the most common skin cancer worldwide, arising from the non-keratinizing cells of the basal layer of the epidermis. **1. Why Option A is Correct:** BCC presents with diverse clinical morphologies. The **"Rodent Ulcer"** (ulcus exedens) is a classic presentation characterized by a central depression or a **flat ulcer** surrounded by a raised, pearly, "rolled" border with telangiectasia. Other variants include nodular (most common), pigmented, and morpheaform (sclerotic). **2. Why Other Options are Incorrect:** * **Options B & C:** BCC is characterized by **local invasiveness** but an extremely low rate of metastasis (less than 0.1%). It rarely spreads to regional lymph nodes or remote skin areas. When it does, it is usually after years of neglect or in specific aggressive subtypes. * **Option D:** While approximately 80% of BCCs occur on the sun-exposed skin of the **head and neck** (especially above the line joining the lobe of the ear to the angle of the mouth), it can occur on any hair-bearing skin surface, including the trunk and extremities. It is notably absent on non-hair-bearing areas like palms and soles. **Clinical Pearls for NEET-PG:** * **Risk Factor:** Chronic UV light exposure is the primary trigger. * **Growth Pattern:** It is a "slow-growing" tumor that destroys local tissues (hence "Rodent Ulcer") but rarely kills via metastasis. * **Management:** Surgical excision with negative margins is the gold standard. **Mohs Micrographic Surgery** is the treatment of choice for high-risk areas (face/medial canthus) to ensure maximum tissue preservation. * **Inheritance:** Associated with **Gorlin Syndrome** (Basal Cell Nevus Syndrome), which includes multiple BCCs, odontogenic keratocysts, and bifid ribs.

Q: What is the indication for sentinel lymph node biopsy in breast cancer?

Breast mass without palpable axillary node. **Explanation:** The **Sentinel Lymph Node Biopsy (SLNB)** is the gold standard for axillary staging in patients with early-stage breast cancer who have a **clinically negative axilla (cN0)**. The "sentinel node" is the first lymph node(s) to receive lymphatic drainage from the primary tumor; if this node is free of cancer, the remaining nodes in the axilla are highly likely to be clear, thus sparing the patient the morbidity of an Axillary Lymph Node Dissection (ALND). * **Why Option C is correct:** SLNB is indicated when there is **no clinical or radiological evidence of axillary metastasis** (non-palpable nodes). It aims to identify occult micrometastasis while avoiding complications like lymphedema, nerve injury, and shoulder stiffness associated with radical dissection. * **Why other options are incorrect:** * **Option A & B:** If metastasis is already proven or if there are **palpable, suspicious axillary nodes**, the patient is classified as clinically node-positive (cN+). These patients typically require a fine-needle aspiration (FNA) or core biopsy followed by ALND or neoadjuvant chemotherapy. * **Option D:** **Stage III** represents locally advanced breast cancer (large tumors or fixed nodes). These cases carry a high risk of lymphatic blockage or altered drainage patterns, making SLNB unreliable; ALND is generally the standard of care here. **High-Yield NEET-PG Pearls:** * **Tracers used:** Technetium-99m labeled sulfur colloid (radioactive) and/or Isosulfan/Methylene blue dye. * **Most accurate method:** The "Dual Technique" (using both dye and isotope) has the lowest false-negative rate (<5%). * **Contraindications:** Inflammatory breast cancer, biopsy-proven positive axillary nodes, and active infection in the axilla. * **Standard of care:** If the sentinel node is negative, no further axillary surgery is required.

Question 1

All the following structures are preserved in modified radical mastectomy except?

Accepted Answer

Intercostobrachial nerve

Answer

Subclavian vein

Answer

Long thoracic nerve

Answer

Nerve to latissimus dorsi

Question 2

A female presents with ductal carcinoma in situ of the breast with diffuse microcalcifications on mammography. She also has a family history of breast cancer. What is the best possible management?

Accepted Answer

Simple mastectomy

Answer

Breast conservative surgery

Answer

Modified radical mastectomy

Answer

Radiotherapy

Question 3

Hormonal therapy is useful if breast cancer expresses which of the following?

Accepted Answer

Estrogen receptor

Answer

Progesterone receptor

Answer

HER2/neu

Answer

VEGF

Question 4

Bleeding from the nipple is seen in which of the following conditions?

Accepted Answer

Duct ectasia, Ductal papilloma, and Carcinoma of Breast are true, while Fibroadenoma and Chronic breast abscess are false.

Answer

Duct ectasia, Ductal papilloma, and Fibroadenoma are true, while Chronic breast abscess and Carcinoma of Breast are false.

Answer

Duct ectasia, Ductal papilloma, and Fibroadenoma are false, while Chronic breast abscess and Carcinoma of Breast are true.

Answer

Duct ectasia, Ductal papilloma, and Carcinoma of Breast are false, while Fibroadenoma and Chronic breast abscess are true.

Question 5

Which of the following conditions may be mistaken for carcinoma of the breast based on appearance?

Accepted Answer

Nodular mucinosis

Answer

Breast abscess

Answer

Cystosarcoma phylloides

Answer

Fibroadenosis

Question 6

Patey's mastectomy is a type of:

Accepted Answer

Modified radical mastectomy

Answer

Simple mastectomy

Answer

Extended mastectomy

Answer

Halsted's radical mastectomy

Question 7

Fixity of the breast tissue in carcinoma of the breast indicates infiltration of what structure?

Accepted Answer

Pectoralis muscle and fascia

Answer

Suspensory ligaments

Answer

Lymphatics

Answer

Internal mammary artery

Question 8

A 67-year-old business executive and tennis player has a basal cell carcinoma removed from the right cheek. What is TRUE of basal cell carcinoma?

Accepted Answer

It may show a flat ulcer.

Answer

It may metastasize to lymph nodes.

Answer

It may metastasize to remote skin areas.

Answer

It is found exclusively in the head and neck.

Question 9

What is the indication for sentinel lymph node biopsy in breast cancer?

Accepted Answer

Breast mass without palpable axillary node

Answer

Metastasis

Answer

Breast mass with palpable axillary node

Answer

Stage III cases

Question 10

Which of the following statements regarding breast self-examination is/are true?

Accepted Answer

It should be performed in different positions such as standing, sitting, and supine.

Answer

It is a method to improve T-cell survival rates.

Answer

In premenopausal women, it should be done approximately 2-3 days before the menstrual cycle.

Answer

It should only be started after the age of 35 years.

Breast Surgery — MCQs

Breast Surgery — MCQs

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