Gastrointestinal Interventions — MCQs
What is the next best step for a 22-year-old with a hepatic hemangioma on ultrasound?
Stereotactic Radiosurgery is a form of –
A 60-year-old male with a history of cirrhosis presents with a 4 cm hepatocellular carcinoma (HCC) located in segment VII of the liver. Considering the patient has Child-Pugh A liver function, which clinical factors are most critical in deciding between liver resection and radiofrequency ablation (RFA)?
A patient presents with hematemesis and is diagnosed with esophageal varices. What is the first line of treatment?
The major disadvantage of mesenteric angiography in the setting of GI bleeding is:
Which one of the following is the investigation of choice in a patient with haematemesis?
Emergency management for Tension pneumothorax is:
Which article of the Indian Constitution allows the state to intervene in cases of hunger strikes to protect the right to life?
Who devised the correction of CTEV by serial casting?
Identify the structure shown in CT abdomen section. (Recent NEET Pattern 2018-19)
Gastrointestinal Interventions Indian Medical PG Practice Questions and MCQs
Question 1: What is the next best step for a 22-year-old with a hepatic hemangioma on ultrasound?
- A. Angiography
- B. CT
- C. Biopsy
- D. MRI (Correct Answer)
Explanation: ***MRI*** - **Magnetic Resonance Imaging (MRI)** is the most sensitive and specific imaging modality for confirming the diagnosis of a **hepatic hemangioma** due to its characteristic enhancement patterns. - An MRI with contrast (e.g., gadolinium) can definitively distinguish a hemangioma from other **benign or malignant liver lesions**, especially when the ultrasound findings are equivocal. *Angiography* - **Angiography** is an invasive procedure and is typically reserved for cases where **embolization** or surgical resection of a very large or symptomatic hemangioma is being considered. - It is not the initial diagnostic choice for confirming a suspected hemangioma identified on **ultrasound**. *CT* - A **CT scan** with contrast can also characterize a hemangioma, showing peripheral nodular enhancement followed by progressive centripetal fill-in. - However, **MRI** generally offers superior soft tissue contrast and provides more definitive diagnostic features for hemangiomas, particularly in younger patients where radiation exposure from CT is a concern. *Biopsy* - **Biopsy** of a suspected hepatic hemangioma is generally contraindicated due to the risk of **hemorrhage** and is rarely necessary for diagnosis. - Imaging characteristics (especially on MRI) are usually sufficient to confirm the diagnosis without the need for an invasive procedure.
Question 2: Stereotactic Radiosurgery is a form of –
- A. Radioiodine therapy
- B. Cryosurgery
- C. Robotic Surgery
- D. Radiotherapy (Correct Answer)
Explanation: ***Radiotherapy*** - **Stereotactic radiosurgery** is a highly precise form of **radiotherapy** that delivers a single high dose or multiple fractionated high doses of radiation to a specific target area. - It uses focused **radiation beams** to treat tumors or other lesions, often as an alternative to conventional surgery, by causing damage to the DNA of target cells. *Radioiodine therapy* - **Radioiodine therapy** primarily uses **iodine-131** to treat thyroid conditions like hyperthyroidism or thyroid cancer. - This involves the patient ingesting a radioactive isotope, unlike the external radiation beams used in radiosurgery. *Cryo Surgery* - **Cryosurgery** involves the use of **extreme cold** to destroy abnormal tissues. - It is a physical method of tissue destruction and does not involve radiation. *Robotic Surgery* - **Robotic surgery** utilizes robotic systems to assist in performing surgical procedures, enhancing precision, and control for the surgeon. - This is a mode of performing traditional surgery and does not involve radiation as its primary therapeutic agent.
Question 3: A 60-year-old male with a history of cirrhosis presents with a 4 cm hepatocellular carcinoma (HCC) located in segment VII of the liver. Considering the patient has Child-Pugh A liver function, which clinical factors are most critical in deciding between liver resection and radiofrequency ablation (RFA)?
- A. Tumor size, location, liver function, and portal hypertension status (Correct Answer)
- B. Presence of comorbidities and performance status
- C. Tumor vascular invasion and metastasis
- D. Patient’s age and overall health status
Explanation: ***Tumor size, location, liver function, and portal hypertension status*** - **Tumor size and location** are critical for resectability and RFA feasibility, as HCCs larger than 3-5 cm or located near major vessels/bile ducts may be harder to ablate or resect safely. - **Liver function (Child-Pugh A)** helps assess the liver's reserve to tolerate resection, while the presence of **portal hypertension** indicates a higher risk of post-resection liver decompensation, favoring RFA. *Presence of comorbidities and performance status* - While important for overall surgical risk assessment (ASA score), **comorbidities** and **performance status** are general considerations and not the primary factors differentiating between liver resection and RFA for HCC in a patient with good liver function. - These factors influence the patient's ability to undergo any intervention, but they don't directly guide the choice between a local ablative therapy and surgical removal based on tumor or liver characteristics. *Tumor vascular invasion and metastasis* - The presence of **vascular invasion** or **distant metastasis** generally indicates advanced disease, precluding both curative resection and RFA, pushing towards systemic therapies or palliative care. - These are factors that determine if **curative treatment** is an option at all, rather than helping to choose between two curative local treatments (resection vs. RFA). *Patient’s age and overall health status* - **Age** is less of a direct contraindication for either procedure in itself, especially in a 60-year-old with Child-Pugh A, as physiological age and performance status are more relevant than chronological age. - While **overall health status** is considered, it overlaps with comorbidities and performance status and is not as discriminative as tumor-specific factors or liver physiology in choosing between resection and RFA for HCC.
Question 4: A patient presents with hematemesis and is diagnosed with esophageal varices. What is the first line of treatment?
- A. Surgery
- B. Steroid therapy
- C. Endoscopic banding (Correct Answer)
- D. Proton pump inhibitors
Explanation: ***Endoscopic banding*** - **Endoscopic variceal ligation (EVL)**, or banding, is the **first-line treatment** for acute variceal bleeding [1]. - It involves placing elastic bands over the varices to **occlude blood flow** and prevent further hemorrhage [1]. *Surgery* - **Surgical shunting procedures** or **liver transplantation** are generally reserved for patients who fail endoscopic and pharmacologic therapies [1]. - These are **invasive options** with significant risks and are not considered first-line for acute bleeding. *Steroid therapy* - **Steroids** are typically used as **anti-inflammatory agents** and are not indicated for controlling bleeding from esophageal varices. - Their use would have **no direct impact** on stopping the hemorrhage. *Proton pump inhibitors* - **Proton pump inhibitors (PPIs)** are used to **reduce gastric acid production**, which is beneficial in conditions like peptic ulcer disease or reflux esophagitis [2]. - They are **not effective** in treating or preventing bleeding from esophageal varices, as the bleeding source is venous [2].
Question 5: The major disadvantage of mesenteric angiography in the setting of GI bleeding is:
- A. Transient ischemic attacks
- B. High radiation exposure to patient
- C. Requires active bleeding for detection (Correct Answer)
- D. It does not identify the specific cause of the bleeding
Explanation: ***Requires active bleeding for detection*** - This is the **major disadvantage** of mesenteric angiography in the setting of GI bleeding. - It requires bleeding at a rate of at least **0.5-1 mL/min** to visualize contrast extravasation, which means it will **miss intermittent or slow bleeding** (the most common pattern in GI hemorrhage). - This significant limitation often makes **CT angiography or nuclear medicine scans** more suitable for detecting slower or intermittent bleeds. - The need for active bleeding at the time of the procedure **directly limits its clinical utility** and is why the study may be negative even when bleeding is ongoing at a slower rate. *It does not identify the specific cause of the bleeding* - While mesenteric angiography primarily localizes the bleeding site rather than identifying the underlying pathology, this is a **secondary limitation**. - The angiographic appearance can sometimes **suggest the etiology** (e.g., vascular malformations show characteristic patterns, tumors may show a blush). - The primary goal of the procedure is **localization for therapeutic intervention**, not definitive diagnosis, so this is less of a disadvantage. *High radiation exposure to patient* - Although mesenteric angiography involves **ionizing radiation**, this is a general concern with fluoroscopy-guided procedures, not its major specific disadvantage in GI bleeding. - The diagnostic and therapeutic benefit typically **outweighs the radiation risk** when active bleeding is appropriately suspected. *Transient ischemic attacks* - This is **not a recognized complication** of mesenteric angiography. - TIAs are **neurological events** related to cerebrovascular circulation, not the mesenteric (abdominal) circulation. - This option is medically inaccurate in the context of mesenteric angiography.
Question 6: Which one of the following is the investigation of choice in a patient with haematemesis?
- A. Flexible upper gastrointestinal endoscopy (Correct Answer)
- B. Contrast enhanced CT scan
- C. Barium meal for stomach and duodenum
- D. Selective left gastric angiography
Explanation: ***Flexible upper gastrointestinal endoscopy*** - This is the **investigation of choice** for haematemesis as it allows for direct visualization of the upper gastrointestinal tract to identify the source of bleeding [1]. - It also enables **therapeutic intervention**, such as injection sclerotherapy, banding, or clip application, to stop the bleeding [1]. *Contrast enhanced CT scan* - A CT scan is generally **not the primary investigation** for acute haematemesis because it offers less diagnostic accuracy for mucosal lesions and cannot provide therapeutic intervention [1]. - While it can identify large bleeds or structural abnormalities, it is **less sensitive for smaller bleeds** or subtle mucosal abnormalities compared to endoscopy. *Barium meal for stomach and duodenum* - A barium meal is **contraindicated in acute gastrointestinal bleeding** as the barium can obscure endoscopic views and interfere with subsequent attempts at endoscopy or angiography [1]. - It provides **limited diagnostic information** about the active bleeding site and offers no therapeutic capabilities. *Selective left gastric angiography* - Angiography is typically reserved for cases of **severe, persistent bleeding** where endoscopy has failed to locate or control the bleed. - It is an **invasive procedure** with potential complications and is not indicated as the initial diagnostic investigation.
Question 7: Emergency management for Tension pneumothorax is:
- A. Tracheostomy
- B. Insertion of a chest tube
- C. Needle decompression (Correct Answer)
- D. Thoracotomy
Explanation: ***Needle decompression*** - This is the immediate, **life-saving intervention** for tension pneumothorax, as it rapidly relieves the pressure on the heart and lungs. - It involves inserting a large-bore needle into the **second intercostal space** in the midclavicular line or the fourth/fifth intercostal space in the anterior axillary line to convert the tension pneumothorax into a simple pneumothorax. *Tracheostomy* - This procedure creates an opening in the trachea to secure an **airway**, primarily used for upper airway obstruction or long-term ventilation. - It does not address the underlying pathology of accumulated air in the pleural space, which is causing mediastinal shift and hemodynamic compromise. *Insertion of a chest tube* - While essential for definitive management of a pneumothorax, a chest tube requires more time to set up and insert compared to needle decompression. - In an acute tension pneumothorax, the priority is immediate pressure relief, which needle decompression provides more rapidly. *Thoracotomy* - This is a major surgical procedure involving opening the chest wall, typically reserved for **life-threatening conditions within the chest** that require direct surgical intervention, such as severe trauma or uncontrollable bleeding. - It is not the appropriate initial emergency management for tension pneumothorax, as it is too invasive and time-consuming for immediate pressure relief.
Question 8: Which article of the Indian Constitution allows the state to intervene in cases of hunger strikes to protect the right to life?
- A. Article 21 (Correct Answer)
- B. Article 35
- C. Article 48
- D. Article 52
Explanation: ***Article 21*** - This article guarantees the **right to life and personal liberty**, a fundamental right that the state is obligated to protect. - The Supreme Court has interpreted this right to include the right to a dignified life, which obliges the state to intervene to prevent self-harm, such as in cases of a **prolonged hunger strike**. *Article 35* - This article deals with the **power of Parliament to make laws** to give effect to certain provisions of Part III (Fundamental Rights) of the Constitution. - It does not directly provide a right to life or allow for state intervention in hunger strikes based on this right. *Article 48* - This article is part of the **Directive Principles of State Policy** and deals with the organization of **agriculture and animal husbandry**. - It focuses on promoting modern and scientific methods for these sectors and does not relate to the right to life or hunger strikes. *Article 52* - This article states that there shall be a **President of India**. - It defines the office of the President and does not relate to fundamental rights or state intervention in cases of hunger strikes.
Question 9: Who devised the correction of CTEV by serial casting?
- A. Gerhardt Kuntscher
- B. Gavril Ilizarov
- C. Hugh Owen Thomas
- D. Ignacio Ponseti (Correct Answer)
Explanation: ***Ignacio Ponseti*** - Dr. Ignacio Ponseti developed the **Ponseti method**, a non-surgical technique for correcting **congenital talipes equinovarus (CTEV)**, commonly known as clubfoot. - This method involves a series of **gentle manipulations** and **serial casting**, followed by the use of a foot abduction brace. *Gerhardt Kuntscher* - **Gerhardt Kuntscher** was a German surgeon known for developing the **intramedullary nail** for fixing long bone fractures. - His contributions revolutionized the surgical management of fractures, but he did not develop the method for CTEV correction. *Gavril Ilizarov* - **Gavril Ilizarov** was a Soviet orthopedic surgeon famous for inventing the **Ilizarov apparatus**, an external fixator used for limb lengthening and complex fracture treatment. - His work focused on osteogenesis and bone regeneration, not the non-surgical correction of clubfoot. *Hugh Owen Thomas* - **Hugh Owen Thomas** was a Welsh orthopedic surgeon regarded as the "father of British orthopaedic surgery," known for the development of the **Thomas splint**. - His contributions were primarily in managing fractures and tuberculosis of the joints, independent of CTEV correction techniques.
Question 10: Identify the structure shown in CT abdomen section. (Recent NEET Pattern 2018-19)
- A. Inferior vena cava
- B. Portal vein (Correct Answer)
- C. Splenic vein
- D. Superior mesenteric vein
Explanation: ***Portal vein*** - The arrow points to a vessel receiving blood from the splenic and superior mesenteric veins, which is characteristic of the **portal vein** entering the **liver parenchyma**. - The portal vein is typically seen anterior to the **inferior vena cava** and posterior to the **common hepatic artery** at this level. *Inferior vena cava* - The **inferior vena cava (IVC)** is a large, retroperitoneal vessel located posterior to the liver and to the right of the aorta. - The structure indicated by the arrow is clearly within the liver substance, not in the typical position of the IVC. *Splenic vein* - The **splenic vein** runs horizontally behind the body of the pancreas and joins with the superior mesenteric vein to form the portal vein. - The vessel shown is within the liver, distal to the formation of the portal vein. *Superior mesenteric vein* - The **superior mesenteric vein (SMV)** typically runs vertically in the mesentery and joins the splenic vein to form the portal vein. - The indicated structure is within the liver hilum, not in the anatomical location of the SMV.
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