Breast Cancer Detection and Diagnosis — MCQs
On mammogram all of the following are the features of a malignant tumor except:
According to the U.S. Preventive Services Task Force (USPSTF) guidelines, what is the recommended age to begin routine screening mammography for average-risk women?
Which finding excludes BIRADS 3 categorization?
Which of the following is the most sensitive investigation for ductal carcinoma in situ (DCIS) of the breast?
A middle aged male patient presents with painless slow growing neck swelling. On examination, lymph nodes are positive. Surgery is done and biopsy is shown in the image below. Which of the following is false regarding the HPE findings?
Triple assessment for carcinoma breast includes:
Best investigation to detect rupture of silicone breast implants is-
Screening is not useful in which carcinoma
Which of the following is NOT a standard component of the triple test for breast cancer detection?
What is not an advantage of USG over mammography?
Breast Cancer Detection and Diagnosis Indian Medical PG Practice Questions and MCQs
Question 1: On mammogram all of the following are the features of a malignant tumor except:
- A. Spiculation
- B. High density
- C. Smooth margin (Correct Answer)
- D. Ill defined margin
Explanation: ***Smooth margin*** - A **smooth margin** on a mammogram is typically a feature of a **benign mass**, indicating that the lesion is well-defined and not invading surrounding tissues. - Malignant tumors usually exhibit **irregular, ill-defined, or spiculated margins** due to their invasive growth patterns. *Spiculation* - **Spiculation** is a **highly suspicious feature** of malignancy, characterized by sharp, radiating lines extending from the mass into the surrounding breast tissue. - It represents tumor invasion and desmoplastic reaction, indicating an aggressive growth pattern. *High density* - **High density** of a mass on mammography, appearing brighter than the surrounding breast tissue, is a **common feature of malignancy**. - This increased density is often due to higher cellularity or desmoplastic reaction within the tumor. *Ill-defined margin* - An **ill-defined margin** is a strong indicator of **malignancy** as it suggests infiltrative growth into adjacent tissues. - The borders of the mass are difficult to distinguish clearly from the surrounding breast parenchyma.
Question 2: According to the U.S. Preventive Services Task Force (USPSTF) guidelines, what is the recommended age to begin routine screening mammography for average-risk women?
- A. 30 years
- B. 40 years
- C. 20 years
- D. 50 years (Correct Answer)
Explanation: ***50 years*** - The **USPSTF recommends** starting biennial (every two years) screening mammography for women of **average risk** at age **50 years** (Grade B recommendation). - This recommendation balances the benefits of early cancer detection against the potential harms of false positives and unnecessary interventions in younger women. *30 years* - This age is **too early** for routine screening mammography in average-risk women according to most major guidelines, including the USPSTF. - Screening at this age could lead to a higher rate of **false positives** and associated anxiety and unnecessary follow-up procedures without significant mortality benefit. *40 years* - While some organizations, like the **American Cancer Society (ACS)**, recommend women begin screening at age 40, the USPSTF specifically advises against routine screening before age 50 for average-risk women due to a less favorable **risk-benefit profile**. - **Individualized decision-making** is considered for women aged 40-49, weighing personal values and potential benefits/harms. *20 years* - **No major health organization** recommends routine screening mammography for average-risk women at this age. - Breast tissue is typically **denser** in younger women, making mammographic interpretation more difficult and less effective, and the incidence of breast cancer is very low.
Question 3: Which finding excludes BIRADS 3 categorization?
- A. Normal lymph node
- B. Simple cyst
- C. Architectural distortion (Correct Answer)
- D. Focal asymmetry
Explanation: ***Architectural distortion*** - **Architectural distortion** refers to a disruption of the normal breast parenchymal architecture in the absence of a discrete mass, often indicating an underlying malignancy. - This finding is suspicious enough to warrant a recommendation of **biopsy (BI-RADS 4 or 5)**, thus **excluding BI-RADS 3**, which implies a probably benign finding with a low likelihood of malignancy (<2%). - Architectural distortion has a high association with malignancy and cannot be categorized as BI-RADS 3. *Normal lymph node* - A **normal lymph node** within the breast or axilla is a common and benign finding, characterized by an oval shape, fatty hilum, and thin cortex. - Its presence does not increase the suspicion of malignancy and is classified as **BI-RADS 1 or 2** (definitely benign). - This does NOT exclude BI-RADS 3; it is simply a more benign finding. *Simple cyst* - A **simple cyst** is a very common and benign fluid-filled sac, readily identifiable by clear sonographic criteria (anechoic, thin smooth walls, posterior acoustic enhancement). - It is classified as **BI-RADS 2** (benign finding), meaning it is definitely not malignant. - This does NOT exclude BI-RADS 3; it is simply a more benign finding that does not require follow-up. *Focal asymmetry* - **Focal asymmetry** refers to an area of fibroglandular tissue that is visible on only one mammographic projection or is less conspicuous than a mass. - If it has **no associated suspicious features**, it can be appropriately categorized as **BI-RADS 3**, requiring short interval follow-up. - This does NOT exclude BI-RADS 3 categorization.
Question 4: Which of the following is the most sensitive investigation for ductal carcinoma in situ (DCIS) of the breast?
- A. PET Scan
- B. Ultrasound
- C. Mammography (Correct Answer)
- D. MRI
Explanation: ***Mammography*** - **Mammography** is the **gold standard** and **primary imaging modality** for detecting **ductal carcinoma in situ (DCIS)**, primarily because it excels at visualizing **microcalcifications**, which are the hallmark of DCIS. - Approximately **80-90% of DCIS cases** present as **microcalcifications** on mammograms, making it the most important screening and diagnostic tool. - Mammography has **high sensitivity (85-95%)** for detecting DCIS, especially calcified forms, and is widely available and cost-effective. *MRI* - While **MRI** has high sensitivity for invasive breast cancer and can detect non-calcified DCIS, it is **not the primary screening tool** for DCIS detection. - MRI is typically used for **staging known DCIS**, evaluating **extent of disease**, detecting **additional foci**, and screening **high-risk patients**. - However, MRI has lower specificity and higher false-positive rates compared to mammography, limiting its use as a primary diagnostic tool. *PET Scan* - **PET scans** are generally **not sensitive** for detecting **DCIS** because DCIS lesions typically have a **low metabolic rate** and do not avidly take up the **FDG tracer**. - PET scans are primarily used for detecting **invasive cancers** and assessing **metastatic disease**, not for non-invasive lesions like DCIS. *Ultrasound* - **Ultrasound** has **limited sensitivity** for detecting **DCIS** because DCIS often does not present as a palpable mass or a distinct sonographic abnormality. - While ultrasound can be useful for evaluating palpable masses or guiding biopsies, it frequently **misses microcalcifications** that are characteristic of DCIS. - Ultrasound is mainly used as a **complementary tool** to mammography, not as a primary diagnostic modality for DCIS.
Question 5: A middle aged male patient presents with painless slow growing neck swelling. On examination, lymph nodes are positive. Surgery is done and biopsy is shown in the image below. Which of the following is false regarding the HPE findings?
- A. Spread is through lymphatics
- B. Nuclear features are the characteristic of this tumor
- C. FNAC is not diagnostic (Correct Answer)
- D. It has excellent prognosis
Explanation: ***Fine needle aspiration cytology (FNAC) is not diagnostic*** - FNAC can often provide significant insights, but in cases of **specific malignancies** or certain lesions, it may not yield definitive diagnoses [1]. - Diagnostic challenges arise as **cellular architecture** or certain **nuclear features** may not be appreciated in FNAC samples [1]. *It spreads quickly via lymphatics* - This condition can indeed spread via lymphatics, making it **aggressive** in nature [1]. - **Lymphatic spread** is a common pathway for many head and neck conditions, particularly malignancies [1]. *Excellent prognosis is associated with this condition* - While some conditions may have favorable prognoses, many midline neck lesions can have **serious implications** depending on their nature [1]. - Prognosis often varies widely and may not always be classified as **excellent** based solely on initial presentation [1]. *Nuclear characteristics are used for the identification* - Nuclear morphology is critical for identifying various **neoplastic conditions**, aiding in differentiation from benign lesions [1][2]. - Many pathologies, especially those involving **malignancy**, rely heavily on **nuclear features** for accurate diagnosis [1][2]. **References:** [1] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. The Endocrine System, pp. 1101-1102. [2] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. The Endocrine System, pp. 1100-1101.
Question 6: Triple assessment for carcinoma breast includes:
- A. Observation, Ultrasonography, biopsy/cytology
- B. History, clinical examination, biopsy/cytology
- C. History, clinical examination, Ultrasonography
- D. Clinical examination, Mammography, biopsy/cytology (Correct Answer)
Explanation: ***Clinical examination, Mammography, biopsy/cytology*** - The **triple assessment** for breast carcinoma is a gold standard diagnostic approach comprising **clinical evaluation**, **imaging studies**, and **histopathological assessment**. - **Clinical examination** assesses physical signs, **mammography** provides imaging, and **biopsy/cytology** offers definitive tissue diagnosis. *Observation, Ultrasonography, biopsy/cytology* - **Observation** is not a formal component of the triple assessment; it lacks the specific diagnostic purpose of clinical examination. - While **ultrasonography** is an important imaging modality, particularly for younger women or dense breasts, **mammography** is typically the primary imaging component for initial screening in the triple assessment. *History, clinical examination, biopsy/cytology* - **History** is crucial for understanding risk factors and symptom presentation but is considered part of the broader clinical workup rather than one of the specific "triple" components. - This option omits crucial **imaging**, which is a mandatory part of the triple assessment. *History, clinical examination, Ultrasonography* - While history and clinical examination are vital, this option completely lacks a **histopathological component (biopsy/cytology)**, which is essential for definitive diagnosis of malignancy. - This option also specifies **ultrasonography** over mammography, which, while useful, may not be the primary initial imaging component in all triple assessments.
Question 7: Best investigation to detect rupture of silicone breast implants is-
- A. Mammography
- B. X-ray
- C. MRI (Correct Answer)
- D. USG
Explanation: ***MRI*** - **Magnetic Resonance Imaging (MRI)** is considered the **gold standard** for detecting silicone breast implant ruptures due to its superior soft tissue contrast and ability to differentiate silicone from other tissues. - It can accurately identify both **intracapsular** (linguine sign) and **extracapsular** ruptures, as well as associated silicone granulomas. *Mammography* - While useful for breast cancer screening, **mammography** has limited sensitivity for detecting silicone implant ruptures, especially subtle ones. - It can show indirect signs like implant contour abnormalities or increased implant density but is often inconclusive for rupture diagnosis. *X-ray* - **X-rays** provide very little information regarding the integrity of silicone breast implants because silicone is radiolucent and does not show up clearly on standard radiographs. - Its utility is primarily for detecting calcifications or foreign bodies, not implant rupture. *USG* - **Ultrasound (USG)** can be a useful initial screening tool for detecting implant ruptures, showing signs like the **"stepladder sign"** for intracapsular rupture or anechoic collections (silicone outside the capsule). - However, its accuracy is highly operator-dependent, and it may miss subtle ruptures or be limited by poor visualization due to scar tissue, making MRI a more definitive choice.
Question 8: Screening is not useful in which carcinoma
- A. Testicular carcinoma (Correct Answer)
- B. Carcinoma prostate
- C. Carcinoma colon
- D. Carcinoma breast
Explanation: Testicular carcinoma - **Testicular cancer** typically presents as a painless mass, and **self-examination** is often emphasized for early detection rather than formal screening programs due to low incidence and variable benefits. - While early detection is important, population-wide screening for testicular cancer is **not recommended** due to its rarity and lack of evidence for improved outcomes compared to opportunistic detection. *Carcinoma prostate* - **Prostate cancer screening** using **PSA (prostate-specific antigen)** testing and digital rectal examinations is routinely performed, though its benefits and risks are debated [1]. - Early detection aims to identify potentially aggressive cancers, but also leads to **overdiagnosis and overtreatment** of indolent lesions [1]. *Carcinoma colon* - **Colorectal cancer screening** is highly effective and widely recommended through methods like **colonoscopy**, fecal occult blood testing, and sigmoisingoscopy. - Screening aims to detect **polyps** before they become cancerous or find cancer at an early, treatable stage, significantly reducing mortality. *Carcinoma breast* - **Breast cancer screening** using **mammography** is a well-established and highly effective method for early detection in women. - Early detection allows for timely treatment, significantly improving prognosis and reducing breast cancer mortality.
Question 9: Which of the following is NOT a standard component of the triple test for breast cancer detection?
- A. USG/ mammography
- B. Breast self examination (Correct Answer)
- C. Clinical examination
- D. FNAC/ trucut biopsy
Explanation: ***Breast self examination*** - While **breast self-examination (BSE)** is important for **personal awareness** and **early detection**, it is not considered a standard component of the diagnostic "triple test" for breast cancer, which aims for definitive diagnosis. - The traditional triple test comprises **clinical examination**, **imaging** (mammography/ultrasound), and **pathological assessment** (FNAC/biopsy). *USG/ mammography* - **Mammography** and **ultrasonography (USG)** are crucial imaging modalities and an integral part of the **triple test**, providing detailed anatomical information about breast lesions. - They help characterize masses detected clinically and guide biopsy procedures, contributing significantly to diagnosis. *FNAC/ trucut biopsy* - **Fine needle aspiration cytology (FNAC)** and **tru-cut biopsy** are essential for **histopathological diagnosis**, confirming malignancy and determining tumor characteristics. - This is the third component of the triple test, providing a definitive cellular or tissue diagnosis. *Clinical examination* - A **thorough clinical breast examination** by a healthcare professional is the first step in the triple test, identifying palpable masses or other suspicious signs. - It involves **inspection** and **palpation** to assess breast tissue and lymph nodes.
Question 10: What is not an advantage of USG over mammography?
- A. Can be used for guided biopsy
- B. Superior detection of microcalcifications (Correct Answer)
- C. In young females with dense breasts
- D. Can be used to differentiate solid VS cystic
Explanation: ***Superior detection of microcalcifications*** - **Mammography** is the gold standard for detecting **microcalcifications**, which can be a key indicator of **ductal carcinoma in situ (DCIS)** or early invasive breast cancer. - **Ultrasound (USG)** has limited sensitivity for detecting and characterizing microcalcifications. *Can be used for guided biopsy* - **USG-guided biopsy** is a common and advantageous technique for obtaining tissue samples from suspicious lesions in the breast or other organs. - This allows for **real-time visualization** of the needle, improving accuracy and reducing complications. *Can be used to differentiate solid VS cystic* - **USG** excels at distinguishing between **solid masses and fluid-filled cysts** due to differences in sound wave reflection. - This capability is crucial in characterizing breast lesions and often eliminates the need for further invasive procedures for benign cysts. *In young females with dense breasts* - **Dense breast tissue** in young females can obscure lesions on mammography, making interpretation difficult. - **USG** is particularly valuable in this population because it is not hindered by breast density and can provide a clearer view of underlying pathology.
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