Imaging of Non-accidental Trauma Indian Medical PG Practice Questions and MCQs
Practice Indian Medical PG questions for Imaging of Non-accidental Trauma. These multiple choice questions (MCQs) cover important concepts and help you prepare for your exams.
Imaging of Non-accidental Trauma Indian Medical PG Question 1: Which of the following is not a differential diagnosis of non-accidental injury?
- A. Osteogenesis imperfecta
- B. Scurvy
- C. Caffey's disease
- D. Osteopetrosis (Correct Answer)
Imaging of Non-accidental Trauma Explanation: ***Correct: Osteopetrosis***
- Osteopetrosis is a rare genetic disorder characterized by **increased bone density** due to defective osteoclast function
- While it causes bones to be brittle and prone to fracture, it has **distinctive radiological features** including diffuse sclerosis and "bone-within-bone" appearance
- The **increased bone density on X-ray** is pathognomonic and readily distinguishes it from NAI, making it **less likely to be confused** with non-accidental injury in clinical practice
- Fractures occur but the radiological pattern is diagnostic of the underlying metabolic bone disease
*Incorrect: Osteogenesis imperfecta*
- This is a **classic differential** for NAI causing **multiple brittle bone fractures** that can be mistaken for abuse
- Features include **blue sclera**, **dentinogenesis imperfecta**, **wormian bones**, and **family history**
- Often presents with multiple fractures at different stages of healing, mimicking the pattern seen in NAI
*Incorrect: Scurvy*
- Caused by **vitamin C deficiency**, leads to defective collagen synthesis
- Results in **subperiosteal hemorrhages**, **metaphyseal fractures**, and **periosteal elevation** that closely mimic NAI
- Additional features include **gingival bleeding**, **petechiae**, **follicular hyperkeratosis**, and **poor wound healing**
*Incorrect: Caffey's disease*
- Also known as **infantile cortical hyperostosis**, presents in infants under 6 months
- Causes **periosteal reactions**, **bone thickening**, and **soft tissue swelling** in long bones, ribs, and mandible
- The periosteal new bone formation can be mistaken for healing fractures from NAI, making it an important differential
Imaging of Non-accidental Trauma Indian Medical PG Question 2: Which of the following is not done in the primary survey of trauma?
- A. Intubation
- B. NCCT head (Correct Answer)
- C. ICD drainage
- D. CXR
Imaging of Non-accidental Trauma Explanation: ***NCCT head***
- A **Non-Contrast CT (NCCT) head** is typically performed during the **secondary survey** once the patient is hemodynamically stable and life-threatening conditions have been addressed.
- The primary survey focuses on immediate **life-saving interventions** for airway, breathing, circulation, disability, and exposure.
*Intubation*
- **Intubation** is a critical intervention during the primary survey, specifically under the **'A' (Airway)** component, to establish and secure a patent airway in a compromised patient.
- Failure to establish an airway can rapidly lead to **hypoxia** and death.
*ICD drainage*
- **Intercostal drain (ICD) drainage** is an urgent intervention in the primary survey, falling under **'B' (Breathing)**, to manage conditions like **tension pneumothorax** or massive hemothorax.
- These conditions can severely compromise ventilation and circulation, requiring immediate relief.
*CXR*
- A **Chest X-ray (CXR)** is a rapid and essential diagnostic tool in the primary survey, also under **'B' (Breathing)**, to identify life-threatening thoracic injuries such as pneumothorax, hemothorax, or mediastinal shift.
- It provides quick information crucial for immediate management decisions.
Imaging of Non-accidental Trauma Indian Medical PG Question 3: A man presents to the emergency department with a head injury following a vehicular accident. What is the investigation of choice?
- A. MRI
- B. CECT
- C. NCCT (Correct Answer)
- D. X-ray
Imaging of Non-accidental Trauma Explanation: ***NCCT***
- **Non-contrast Computed Tomography (NCCT)** of the head is the **investigation of choice** for acute head trauma due to its rapid acquisition, wide availability, and excellent sensitivity for detecting acute hemorrhage, fractures, and mass effects.
- It rapidly identifies life-threatening conditions such as **epidural, subdural, and intracerebral hemorrhages**, which require immediate intervention.
*MRI*
- **MRI** is superior for detecting subtle brain tissue injuries, diffuse axonal injury, and non-hemorrhagic lesions but is generally **not the first-line investigation** in acute trauma due to longer scan times, limited availability in the emergency setting, and inability to detect acute hemorrhage as clearly as CT.
- Its use is typically reserved for follow-up studies or when CT findings are inconclusive or specific soft tissue detail is required.
*CECT*
- **Contrast-enhanced CT (CECT)** of the head is reserved for specific indications like evaluating vascular lesions (e.g., aneurysms, arteriovenous malformations) or tumors, which are generally **not the primary concern** in the initial assessment of acute head trauma.
- Administering contrast agents can delay imaging, may pose risks to patients with renal impairment or allergies, and does not significantly improve the detection of acute traumatic hemorrhage compared to NCCT.
*X-ray*
- **X-rays** of the skull are useful for detecting **skull fractures**, but they provide **limited information** regarding intracranial injuries or soft tissue damage, which are critical in head trauma.
- They have largely been superseded by CT scans, which offer a more comprehensive view of both bony structures and intracranial contents.
Imaging of Non-accidental Trauma Indian Medical PG Question 4: Which of the following is a characteristic feature of Battered Baby Syndrome (Non-Accidental Injury)?
- A. Stab injury
- B. Firearm injury
- C. Bruises of varying ages (Correct Answer)
- D. None of the options
Imaging of Non-accidental Trauma Explanation: ***Bruises of varying ages***
- The presence of bruises at **different stages of healing** is a hallmark indicator of **non-accidental trauma** or Battered Baby Syndrome, as it suggests repeated injuries occurring over time rather than a single incident.
- **Forensic significance**: Fresh bruises (red/purple) alongside older bruises (yellow/green/brown) indicate multiple episodes of trauma, which is inconsistent with the caregiver's explanation of a single accidental event.
- Other classic features include fractures (especially metaphyseal/corner fractures, rib fractures), subdural hematomas, retinal hemorrhages, and injuries in protected body areas.
*Stab injury*
- While a stab injury represents severe trauma requiring forensic investigation, it is **not characteristic** of the typical presentation pattern of Battered Baby Syndrome.
- Stab wounds indicate a specific violent act rather than the pattern of **repeated blunt force trauma** that defines the syndrome.
- Battered Baby Syndrome classically involves injuries from shaking, hitting, or blunt trauma rather than penetrating injuries.
*Firearm injury*
- A firearm injury is a distinct acute traumatic event that does not represent the **chronic, repetitive abuse pattern** seen in Battered Baby Syndrome.
- Such injuries are typically isolated incidents rather than part of ongoing physical abuse with varied injury ages.
- The syndrome is characterized by multiple injuries at different healing stages from repeated episodes, not single penetrating trauma.
*None of the options*
- This option is incorrect because "bruises of varying ages" is a **well-established forensic indicator** for diagnosing Battered Baby Syndrome in medical literature and practice.
- The presence of injuries at multiple stages of healing is one of the most important diagnostic features that raises suspicion for non-accidental injury in pediatric forensic medicine.
Imaging of Non-accidental Trauma Indian Medical PG Question 5: A traumatic injury to an 8-year-old child, with marking of a rickshaw tyre found on the body, is an example of -
- A. Pattern bruises (Correct Answer)
- B. Imprint abrasion
- C. Percolated bruise
- D. Contusion
Imaging of Non-accidental Trauma Explanation: ***Pattern bruises***
- This scenario describes **pattern bruising**, where the **shape of the injuring object** (rickshaw tyre) is clearly visible on the body.
- Pattern bruises are indicative of severe trauma and provide crucial **forensic evidence** about the **weapon or mechanism of injury**.
- This is the **specific forensic medicine term** for bruises that retain the characteristic pattern of the causative object.
*Imprint abrasion*
- An imprint abrasion occurs when the **surface features of an object are scraped onto the skin**, leaving a superficial injury with disruption of the epidermis.
- This typically involves **scraping or rubbing** of the skin surface, whereas the question describes **marking** on the body, which in forensic context refers to a bruise (subcutaneous hemorrhage) rather than a superficial abrasion.
*Percolated bruise*
- A percolated bruise refers to a bruise where the **blood has spread extensively** through the tissue planes, often making its initial impact site difficult to discern.
- The pattern becomes **diffuse and indistinct**, which is the opposite of the clear tyre marking described in the question.
*Contusion*
- A contusion is the **general medical term** for a bruise - any blunt force injury causing damaged capillaries and blood vessels with subcutaneous bleeding.
- While the injury IS technically a contusion, **"pattern bruise" is the more specific and correct forensic medicine terminology** that describes a contusion with the distinctive shape of the causative object.
- In forensic medicine, specificity matters - we use "pattern bruise" to immediately convey that the injury has evidential value showing the weapon's characteristics.
Imaging of Non-accidental Trauma Indian Medical PG Question 6: An intrauterine scan at the 13th week of pregnancy showed a fetus with multiple long bone fractures. What is commonly associated with this finding?
- A. Osteogenesis imperfecta (Correct Answer)
- B. Marfan syndrome
- C. Achondroplasia
- D. Cretinism
Imaging of Non-accidental Trauma Explanation: ***Osteogenesis imperfecta***
- **Multiple long bone fractures** detected early in pregnancy are a classic presentation of **osteogenesis imperfecta (OI)**, a genetic disorder characterized by **bone fragility**.
- OI is primarily caused by mutations in genes encoding **type I collagen**, leading to defective bone formation.
*Achondroplasia*
- This condition is a form of **dwarfism** characterized by disproportionately short limbs and a normal-sized trunk, resulting from a mutation in the **FGFR3 gene**.
- While it affects bone growth, it typically does not cause **multiple fractures** prenatally.
*Marfan syndrome*
- This is a connective tissue disorder affecting the skeletal, ocular, and cardiovascular systems, characterized by **tall stature**, **long limbs and fingers**, and **aortic root dilation**.
- It results from a mutation in the **fibrillin-1 gene** and is not primarily associated with prenatal long bone fractures.
*Cretinism*
- This is a historical term for **congenital hypothyroidism**, which results from severely deficient thyroid hormone production in a newborn.
- It leads to developmental delays, growth retardation, and intellectual disability, but not to **multiple bone fractures**.
Imaging of Non-accidental Trauma Indian Medical PG Question 7: Investigation of choice for diagnosis of splenic rupture –
- A. MRI
- B. Peritoneal lavage
- C. Ultrasound
- D. CT scan (Correct Answer)
Imaging of Non-accidental Trauma Explanation: **CT scan**
- A **CT scan** with intravenous contrast is the investigation of choice for splenic rupture due to its high sensitivity and specificity in detecting **splenic injury**, **hematomas**, and **free intraperitoneal fluid**.
- It provides detailed anatomical information, crucial for grading the injury and guiding management decisions, especially in hemodynamically stable patients.
*MRI*
- **MRI** offers excellent soft tissue contrast, but it is **time-consuming** and often **not readily available** in emergency settings for acute trauma.
- It is typically reserved for more chronic or complex cases where detailed soft tissue characterization is not immediately needed in acute trauma.
*Peritoneal lavage*
- **Diagnostic peritoneal lavage (DPL)** is an **invasive procedure** that is less specific than imaging for diagnosing splenic rupture.
- It detects the presence of **intraperitoneal bleeding** but does not localize the injury or provide information about the extent of organ damage.
*Ultrasound*
- **Ultrasound (FAST exam)** is a rapid, non-invasive tool for detecting **free fluid** in the abdomen but has limited sensitivity for directly visualizing the spleen or accurately grading splenic injuries.
- While useful for rapid assessment of **hemodynamically unstable** patients, a **negative FAST exam does not rule out splenic injury**, especially in stable patients.
Imaging of Non-accidental Trauma Indian Medical PG Question 8: Shape of extradural hematoma on NCCT is?
- A. Bean shaped
- B. Crescent shaped
- C. Lens shaped (Correct Answer)
- D. Medially concave
Imaging of Non-accidental Trauma Explanation: ***Lens shaped***
- An **extradural hematoma** (EDH) appears **biconvex** or **lens-shaped** because it is limited by the cranial sutures, where the dura mater is tightly attached to the inner table of the skull.
- This characteristic shape helps differentiate it from other intracranial hemorrhages on **non-contrast CT (NCCT)** scans.
*Bean shaped*
- While descriptive, "bean-shaped" is not the standard or most accurate descriptor for an EDH, which is typically more organized and sharply delineated due to its confinement.
- This term might be loosely applied to other lesions but lacks the precision needed for a confident diagnosis of EDH.
*Crescent shaped*
- A **crescent shape** is characteristic of a **subdural hematoma (SDH)**, which spreads more freely over the brain surface as it is located between the dura and arachnoid mater, not limited by sutures.
- This shape indicates bleeding across suture lines, a key differentiator from EDH.
*Medially concave*
- This describes the typical appearance of a **subdural hematoma** (SDH), where the collection of blood conforms to the curvature of the brain surface and can extend across suture lines.
- An EDH is typically **convex** towards the brain parenchyma because of the dura's adherence to the skull at the sutures.
Imaging of Non-accidental Trauma Indian Medical PG Question 9: The following X-ray is used to evaluate \qquad sinus?
- A. Frontal
- B. Maxillary (Correct Answer)
- C. Ethmoidal
- D. Sphenoidal
Imaging of Non-accidental Trauma Explanation: ***Maxillary***
- The image provided is a **Waters' view** (occipitomental view) X-ray of the paranasal sinuses, which is primarily used to visualize the **maxillary sinuses**.
- In a Waters' view, the **petrous ridges** (dense bone at the base of the skull) are projected below the maxillary sinuses, allowing for a clear view of these sinuses.
*Frontal*
- While the **frontal sinuses** are visible in a Waters' view, they are generally better visualized in a **Caldwell view** (occipitofrontal view) or lateral view.
- In this projection, their visualization can be obscured by other bony structures, and they are not the primary focus.
*Ethmoidal*
- The **ethmoidal sinuses** are typically comprised of multiple small air cells located between the orbits and are best seen on a **Caldwell view** or specialized oblique views.
- In a Waters' view, their evaluation is limited due to superimposition of other facial bones.
*Sphenoidal*
- The **sphenoidal sinuses** are located deep within the skull, inferior to the sella turcica, and are quite difficult to visualize on standard plain radiographs like the Waters' view.
- They are best assessed using a **lateral view of the skull** or advanced imaging like **CT scans**.
Imaging of Non-accidental Trauma Indian Medical PG Question 10: 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
Imaging of Non-accidental Trauma 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.
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