Palliative Radiation Therapy — MCQs
A 60-year-old man with advanced prostate cancer presents with severe, constant back pain. X-ray reveals vertebral metastases. What is the most appropriate management?
Radiotherapy is most useful in:
Radiotherapy has the most significant therapeutic role in:
Which of the following is an inappropriate indication for concomitant chemotherapy in cases of head and neck cancer?
For which type of carcinoma is the Nigro protocol primarily used?
Stereotactic Radiotherapy is used in:
A 60-year-old male patient has an antral carcinoma spreading to the head of the pancreas with multiple small metastases to the right lobe of the liver. What is the best treatment approach?
What is the investigation of choice in a patient with blunt abdominal trauma with hematuria?
What is the investigation of choice in a patient with blunt abdominal trauma with hematuria?
A 35-year-old male with history of 4 weeks of immobilization for fracture of femur develops sudden onset breathlessness and blood in sputum. CT angiography shows? (Recent NEET Pattem 2018-19)
Palliative Radiation Therapy Indian Medical PG Practice Questions and MCQs
Question 1: A 60-year-old man with advanced prostate cancer presents with severe, constant back pain. X-ray reveals vertebral metastases. What is the most appropriate management?
- A. Chemotherapy
- B. Surgical decompression
- C. Radiation therapy (Correct Answer)
- D. NSAIDs
Explanation: ***Radiation therapy*** - **Radiation therapy** is highly effective for localized pain control in **vertebral metastases** and can prevent further spinal cord compression [1]. - It works by shrinking the tumor, thereby alleviating pain and restoring neurological function in many cases. *Chemotherapy* - While chemotherapy is a systemic treatment for prostate cancer, its **pain-relieving effects are often slower** and less immediate compared to radiation for localized bone pain. - It may be used in conjunction with radiation, but it is typically not the **most appropriate initial management** for severe, constant pain due to vertebral metastases. *Surgical decompression* - **Surgical decompression** is primarily considered for patients with **spinal cord compression** leading to neurological deficits or intractable pain unresponsive to radiation [1]. - The patient's presentation of severe, constant back pain due to vertebral metastases, without mentioned neurological compromise, makes **radiation therapy a more appropriate first-line treatment** in this context [1]. *NSAIDs* - **NSAIDs** might provide some mild pain relief, but they are **insufficient for severe pain** caused by progressive vertebral metastases. - They also carry risks like **gastrointestinal complications** and **renal impairment**, especially in elderly patients with advanced cancer.
Question 2: Radiotherapy is most useful in:
- A. Melanoma
- B. Pancreatic carcinoma
- C. Osteosarcoma
- D. Seminoma (Correct Answer)
Explanation: ***Seminoma*** - **Seminoma** is a highly **radiosensitive** tumor, making radiotherapy a cornerstone of its treatment, especially for localized disease and in adjuvant settings. - Due to its chemosensitivity and radiosensitivity, even advanced seminoma often responds well to treatment, leading to **high cure rates**. *Melanoma* - **Melanoma** is generally considered **radioresistant**, meaning that it does not respond well to conventional doses of radiation. - Treatment primarily involves **surgical excision**, immunotherapy, and targeted therapies. *Pancreatic carcinoma* - **Pancreatic carcinoma** is notoriously **radioresistant** and has a poor prognosis, with limited effectiveness of standalone radiation therapy. - Treatment often involves a combination of **surgery**, chemotherapy, and sometimes concurrent chemoradiation, though outcomes remain challenging. *Osteosarcoma* - **Osteosarcoma** is primarily managed with **surgical resection** and **neoadjuvant/adjuvant chemotherapy**, as it is relatively radioresistant. - Radiotherapy is typically reserved for unresectable tumors, palliative care, or when surgery is contraindicated.
Question 3: Radiotherapy has the most significant therapeutic role in:
- A. Monoclonal gammopathy
- B. Tuberculosis
- C. Sarcomas (Correct Answer)
- D. Sarcoidosis
Explanation: ***Sarcomas*** - **Radiotherapy** plays a crucial therapeutic role in **sarcomas**, though typically as **adjuvant therapy** combined with surgical resection - Used for **local control** in soft tissue sarcomas, particularly when wide margins cannot be achieved - **Primary radiotherapy** is the treatment of choice for certain radiation-sensitive sarcomas like **Ewing's sarcoma** and in cases of **inoperable tumors** - Essential for reducing **local recurrence rates** in high-grade soft tissue sarcomas - Among the options listed, sarcomas have the **strongest and most established indication** for radiotherapy *Monoclonal gammopathy* - Generally **observation only** for MGUS (Monoclonal Gammopathy of Undetermined Significance) - Radiotherapy used only for **solitary plasmacytoma**, which is a specific localized manifestation - Multiple myeloma (if it progresses) is treated with **chemotherapy** and targeted agents, not radiotherapy as primary treatment *Tuberculosis* - An **infectious disease** caused by *Mycobacterium tuberculosis* - Treated exclusively with **anti-tubercular drug regimens** (RIPE: Rifampicin, Isoniazid, Pyrazinamide, Ethambutol) - Radiotherapy has **no role** in treating infections *Sarcoidosis* - A **systemic inflammatory condition** with non-caseating granulomas - Primary treatment is **corticosteroids** for symptomatic cases - Immunosuppressants used for refractory cases - Radiotherapy has **no role** in inflammatory/granulomatous diseases
Question 4: Which of the following is an inappropriate indication for concomitant chemotherapy in cases of head and neck cancer?
- A. Metastatic advanced head and neck cancer (Correct Answer)
- B. As an organ-preserving method of treatment
- C. Primary treatment for patients with unresectable disease
- D. Postoperative case of intermediate stage resectable tumor
Explanation: ***Metastatic advanced head and neck cancer*** - While chemotherapy is used in metastatic head and neck cancer, the term "concomitant chemotherapy" implies simultaneous administration with radiation therapy. For **metastatic disease**, the primary treatment strategy is usually **systemic chemotherapy** or targeted therapy, not necessarily concomitant with radiation to a local site with curative intent. - Concomitant chemoradiation is primarily used for **locally advanced, non-metastatic disease** to improve local control and survival, not typically for systemic metastatic disease where the goal is palliation or systemic control. *As an organ-preserving method of treatment* - Concomitant chemoradiation is a well-established strategy for organ preservation, particularly in advanced laryngeal and pharyngeal cancers, allowing patients to avoid **laryngectomy** or extensive surgical resections while achieving similar oncologic outcomes. - This approach aims to maintain **swallowing and speech function** by reducing tumor burden and eradicating microscopic disease. *Primary treatment for patients with unresectable disease* - For **unresectable locally advanced head and neck cancers**, concomitant chemoradiation is often considered the **definitive primary treatment** to achieve local control and improve survival outcomes. - Surgery is not feasible in these cases due to tumor extent or involvement of critical structures, making chemoradiation the best curative option. *Postoperative case of intermediate stage resectable tumor* - **Adjuvant concomitant chemoradiation** is indicated postoperatively for resected tumors with high-risk features such as **extracapsular extension (ECE)** or positive surgical margins, even in intermediate stages. - This is done to eradicate microscopic residual disease and reduce the risk of **local-regional recurrence**.
Question 5: For which type of carcinoma is the Nigro protocol primarily used?
- A. Anal (Correct Answer)
- B. Colon
- C. Hepatocellular
- D. Pancreatic
Explanation: ***Correct: Anal carcinoma*** The **Nigro protocol** is the landmark chemoradiation regimen specifically developed for **anal squamous cell carcinoma**. Introduced by Norman Nigro in 1974, it consists of: - **Concurrent chemotherapy** (5-Fluorouracil + Mitomycin C) - **External beam radiotherapy** This protocol revolutionized anal cancer treatment by achieving complete pathological response in the majority of cases, making it the **standard of care** and avoiding the need for abdominoperineal resection (APR) in most patients. It preserves anal sphincter function and has excellent outcomes with 5-year survival rates exceeding 70%. *Incorrect: Colon carcinoma* - Colon cancer is primarily treated with **surgical resection** (hemicolectomy) followed by adjuvant chemotherapy (FOLFOX) in advanced stages - The Nigro protocol is not used for colonic malignancies *Incorrect: Hepatocellular carcinoma* - HCC treatment includes **hepatic resection**, liver transplantation, radiofrequency ablation, or systemic therapy (sorafenib, lenvatinib) - Chemoradiation protocols like Nigro are not the standard approach *Incorrect: Pancreatic carcinoma* - Pancreatic cancer is treated with **Whipple procedure** (pancreaticoduodenectomy) for resectable tumors or chemotherapy regimens like FOLFIRINOX or gemcitabine-based therapy - The Nigro protocol has no role in pancreatic malignancy management
Question 6: Stereotactic Radiotherapy is used in:
- A. Inoperable Stage 1 Lung Tumor (Correct Answer)
- B. Lymphangitis Carcinomatosa
- C. Miliary Lung Metastasis
- D. Tumor at the base of tongue with new Lymph Node enlargement
Explanation: ***Inoperable Stage 1 Lung Tumor*** - **Stereotactic Radiotherapy (SRT)** is highly effective for **inoperable Stage 1 lung tumors** because it delivers high doses of radiation with extreme precision, maximizing tumor control while sparing surrounding healthy tissue. - The **precision** of SRT makes it an excellent option for localized, small tumors that cannot be surgically removed due to patient comorbidities or tumor location. *Lymphangitis Carcinomatosa* - **Lymphangitis carcinomatosa** involves diffuse infiltration of the pulmonary lymphatic system by cancer cells and is not amenable to localized radiation techniques like SRT. - Treatment for lymphangitis carcinomatosa typically involves **systemic therapy** such as chemotherapy or targeted therapy, rather than focal radiation. *Miliary Lung Metastasis* - **Miliary lung metastases** refer to widespread, small (~2-4mm) nodules throughout both lungs, indicating advanced systemic disease. - SRT is a **localized treatment** and therefore not appropriate for diffuse, multifocal disease like miliary metastases, which requires systemic treatment. *Tumor at the base of tongue with new Lymph Node enlargement* - A tumor at the **base of the tongue with new lymph node enlargement** indicates a larger disease burden, likely requiring a combination of **surgery, conventional radiation therapy, and/or chemotherapy**. - While radiation is a component of treatment for head and neck cancers, **SRT is typically reserved for smaller, well-defined lesions**, or in specific cases as a boost or for recurrences, not usually for initial treatment of a larger primary tumor with nodal involvement.
Question 7: A 60-year-old male patient has an antral carcinoma spreading to the head of the pancreas with multiple small metastases to the right lobe of the liver. What is the best treatment approach?
- A. Surgical resection with adjuvant chemotherapy
- B. Radiation therapy alone
- C. Palliative chemotherapy (Correct Answer)
- D. Supportive care only
Explanation: Palliative chemotherapy - The presence of **multiple small metastases** in the liver indicates **metastatic disease**, which is generally considered incurable with surgery [2]. - **Palliative chemotherapy** aims to control disease progression, alleviate symptoms, and improve quality of life in patients with advanced metastatic cancer. Surgical resection with adjuvant chemotherapy - **Surgical resection** is not indicated due to the presence of **distant metastases** (to the liver), classifying the disease as Stage IV [1]. - **Adjuvant chemotherapy** is given after curative surgery to reduce recurrence risk, which is not the goal here as the disease is already metastatic. Radiation therapy alone - **Radiation therapy alone** is typically reserved for localized disease or for palliative symptom management (e.g., pain from bone metastases), not for widespread metastatic disease. - It would not adequately address the systemic nature of **multiple liver metastases** from a pancreatic primary. Supportive care only - While supportive care is crucial, **palliative chemotherapy** offers a chance to prolong survival and manage symptoms more effectively than supportive care alone in suitable patients with advanced pancreatic cancer. - Skipping chemotherapy entirely would mean foregoing potential benefits in terms of disease control and quality of life, especially for patients with a good performance status.
Question 8: What is the investigation of choice in a patient with blunt abdominal trauma with hematuria?
- A. USG of the abdomen
- B. Retrograde urogram
- C. IVP
- D. CECT (Correct Answer)
Explanation: ***Correct Answer: CECT*** - **Contrast-enhanced computed tomography (CECT)** is the investigation of choice for evaluating blunt abdominal trauma with hematuria as it accurately assesses the extent of injury to the **kidneys, ureters, bladder**, and surrounding structures. - It provides detailed images for detecting **renal lacerations, hematomas, urine extravasation**, and other abdominal organ injuries. - **Gold standard** in trauma protocols for comprehensive evaluation of renal and abdominal injuries. *Incorrect: USG of the abdomen* - **Ultrasound** can identify gross abnormalities like large hematomas or free fluid but is less sensitive than CECT for subtle renal injuries or collecting system disruptions. - It is often used as an initial screening tool (FAST exam) but not the definitive investigation of choice in this context. *Incorrect: Retrograde urogram* - A **retrograde urogram** primarily evaluates the **lower urinary tract** (ureters and bladder) by injecting contrast directly into the urethra. - It is not suitable for assessing the extent of renal parenchymal injury or other abdominal organ damage in blunt trauma. *Incorrect: IVP* - **Intravenous pyelogram (IVP)** uses intravenous contrast to visualize the kidneys, ureters, and bladder, but it has largely been replaced by CECT due to its lower sensitivity and specificity for traumatic injuries. - It provides less detailed anatomical information about surrounding soft tissues and can miss subtle parenchymal or vascular injuries.
Question 9: What is the investigation of choice in a patient with blunt abdominal trauma with hematuria?
- A. Contrast enhanced computed tomography (Correct Answer)
- B. Retrograde urogram
- C. Intravenous urogram
- D. Ultrasonography of abdomen
Explanation: ***Contrast enhanced computed tomography (CECT)*** - **CECT** is the **investigation of choice** for evaluating solid organ injuries, including renal trauma, in hemodynamically stable patients with blunt abdominal trauma and hematuria. - It provides detailed imaging of the kidneys, urinary tract, and surrounding structures, allowing for the classification of injury severity and identification of associated injuries. *Retrograde urogram* - A retrograde urogram is primarily used to evaluate the **lower urinary tract** (urethra and bladder) for strictures or injuries, specifically when there is a suspicion of urethral injury. - It is not the primary imaging modality for assessing renal parenchymal or collecting system injuries from blunt trauma. *Intravenous urogram (IVU)* - While an IVU can assess the upper urinary tract, it has largely been replaced by **CECT** in the acute trauma setting due to CECT's superior resolution and ability to evaluate renal parenchyma and other abdominal organs. - IVU exposes the patient to radiation and requires contrast administration, and it may not adequately visualize subtle renal injuries or hematomas as effectively as CECT. *Ultrasonography of abdomen* - **Ultrasound** is useful for rapidly detecting free fluid (suggesting hemorrhage) or gross hydronephrosis in trauma, but it has limited sensitivity for diagnosing specific renal parenchymal injuries or urinary extravasation. - Its role in blunt abdominal trauma with hematuria is often as an initial screening tool, but it is not sufficient for definitive diagnosis or grading of renal injuries.
Question 10: A 35-year-old male with history of 4 weeks of immobilization for fracture of femur develops sudden onset breathlessness and blood in sputum. CT angiography shows? (Recent NEET Pattem 2018-19)
- A. Acute cor-pulmonale (Correct Answer)
- B. Pulmonary oedema
- C. Aortic dissection
- D. Fat embolism
Explanation: ***Acute cor-pulmonale*** - **4 weeks of immobilization** is a major risk factor for **deep vein thrombosis (DVT)** leading to **pulmonary embolism (PE)** - **CT pulmonary angiography** is the gold standard investigation for PE, showing filling defects in pulmonary arteries - Massive or submassive PE causes acute **right ventricular strain** = **acute cor-pulmonale** - Clinical presentation of **sudden breathlessness** and **hemoptysis** is classic for pulmonary thromboembolism - The timing (4 weeks post-immobilization) fits thromboembolism, not fat embolism *Fat embolism* - Occurs **acutely within 24-72 hours** after long bone fracture (especially femur/tibia) - The **4-week delay** makes fat embolism extremely unlikely - Presents with **respiratory distress, petechial rash, and neurological symptoms** (Gurd's criteria) - CT findings show diffuse ground-glass opacities, not typical filling defects seen on CT angiography *Pulmonary oedema* - Caused by **left heart failure** or **ARDS**, showing bilateral interstitial and alveolar fluid - Would show diffuse bilateral infiltrates on imaging, not filling defects in pulmonary vessels - **Hemoptysis** is uncommon in cardiogenic pulmonary edema - No clear cardiac history or precipitant in this patient *Aortic dissection* - Involves a tear in the aortic intima with blood dissecting through the aortic wall - Presents with **sudden severe chest/back pain**, not primarily with hemoptysis - CT angiography would show **aortic flap and false lumen**, not pulmonary vascular abnormalities - Unrelated to femur fracture or prolonged immobilization
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