Chest Radiology Practice Questions

Q: The image shows a standing upright chest X-ray with pleural reflection and a straight horizontal air-fluid level with absence of meniscus sign. What is the most likely diagnosis?

Hydropneumothorax. ***Correct: Hydropneumothorax*** - The image exhibits a **straight horizontal air-fluid level** in the pleural space, visible on an upright chest X-ray, which is characteristic of hydropneumothorax (simultaneous presence of both air and fluid in the pleural cavity). - The **absence of the meniscus sign (Ellis curve)** is the key distinguishing feature - this curved meniscus would be seen in a simple pleural effusion. - The **straight level** indicates air above fluid, confirming hydropneumothorax. *Incorrect: Pleural effusion* - Simple pleural effusion shows a **meniscus sign (Ellis curve)** - a curved upper border where fluid meets the chest wall. - No air-fluid level would be present, just homogeneous opacity with preserved meniscus. *Incorrect: Pneumothorax* - Pneumothorax shows **air only** in the pleural space with visible visceral pleural line. - No fluid level would be present - just absence of lung markings peripherally. *Incorrect: Empyema* - While empyema can occasionally show air-fluid level (if gas-forming organisms or bronchopleural fistula), it typically presents as a **loculated collection** with irregular borders and pleural thickening. - The classic straight air-fluid level is more characteristic of hydropneumothorax.

Q: The CT chest image shows a hazy increased attenuation with preserved bronchial and vascular markings. What pattern is demonstrated?

Ground glass pattern. ***Ground glass pattern*** - The image shows **hazy increase in lung attenuation** that does not obscure underlying bronchial and vascular margins - This is the defining feature of **ground glass opacity (GGO)** - Suggests partial filling of airspaces, interstitial thickening, partial alveolar collapse, or increased capillary blood volume - Commonly seen in **interstitial lung diseases**, atypical pneumonias, pulmonary edema, and diffuse alveolar hemorrhage *Honeycomb pattern* - Characterized by **clustered cystic airspaces** with thick walls (3-10mm) - Represents **end-stage pulmonary fibrosis** with irreversible architectural distortion - Typically seen in **peripheral and subpleural distribution** in usual interstitial pneumonia (UIP) - NOT present in this image, which shows preserved architecture *Crazy paving pattern* - Combination of **ground glass opacity with superimposed interlobular septal thickening** and intralobular lines - Creates a pattern resembling **irregular paving stones** - Classically associated with **pulmonary alveolar proteinosis** but also seen in Pneumocystis pneumonia, ARDS, and organizing pneumonia - NOT present in this image, which lacks the prominent septal thickening *Tree-in-bud pattern* - Represents **centrilobular nodules** with connecting branching linear structures - Indicates **bronchiolar impaction** with mucus, pus, or fluid - Commonly seen in **endobronchial spread of tuberculosis**, bacterial bronchopneumonia, and bronchiolitis - NOT present in this image, which shows diffuse hazy attenuation rather than nodular opacities

Q: A 45-year-old male presents with sudden onset shortness of breath and chest pain. A chest X-ray is obtained. What is the most likely diagnosis based on the image?

Pneumothorax. ***Pneumothorax*** - The chest X-ray shows several classic signs of a pneumothorax: **absent vascular markings** in the right lung field (indicated by red markings), a **deep sulcus sign** (blue arrow), and a visible **visceral pleural line** (yellow line) separating the collapsed lung from the chest wall. - The sudden onset of **shortness of breath** and **chest pain** in a 45-year-old male is consistent with the clinical presentation of a spontaneous pneumothorax. *Pleural Effusion* - A pleural effusion would typically present as a **blunting of the costophrenic angle** and a **meniscus sign** (concave upper border of fluid), which are not the primary features seen here. - While fluid can cause chest pain and shortness of breath, the distinct visceral pleural line and absent lung markings point away from an effusion as the primary diagnosis. *Pulmonary Edema* - Pulmonary edema is characterized by **cardiomegaly**, **perihilar haziness**, **Kerley B lines**, and often **bilateral effusions**, none of which are evident on this X-ray. - The clear lung field with absent markings is contrary to the diffuse alveolar or interstitial opacities seen in pulmonary edema. *Consolidation* - Consolidation, typically due to pneumonia, shows as a **lobar or segmental opacification** with **air bronchograms**, indicating fluid or cells filling the alveoli while the airways remain open. - This image clearly demonstrates a collapsed lung with air in the pleural space, not opacified lung tissue or air bronchograms.

Q: The following pattern in CT scan shown below can occur due to spread from:

Pulmonary artery. ***Pulmonary artery*** - The CT scan demonstrates a **miliary pattern** with numerous small (1-3mm), discrete nodules showing **random distribution** throughout both lungs - This random distribution is the hallmark of **hematogenous spread via the pulmonary arteries** - When pathogens or tumor cells reach the pulmonary arteries (from right heart or systemic venous circulation), they disseminate uniformly throughout lung parenchyma - Classic examples include **miliary tuberculosis** and **hematogenous metastases** (thyroid, renal, melanoma) *Lymphatics* - Lymphatic spread produces a **perilymphatic distribution**, NOT a miliary/random pattern - Nodules appear along lymphatic pathways: peribronchovascular bundles, interlobular septa, and subpleural regions - Creates a characteristic beaded or nodular appearance along lymphatic routes - Seen in **sarcoidosis** and **lymphangitic carcinomatosis**, which do NOT present with miliary patterns *Bronchial vein* - Bronchial veins drain deoxygenated blood from bronchial walls to the systemic circulation (azygos/hemiazygos system) - This is NOT a recognized pathway for producing miliary lung nodules in standard radiology literature - Miliary patterns specifically refer to pulmonary arterial hematogenous dissemination *All of the above* - Incorrect: The miliary pattern is specifically caused by **pulmonary artery spread only** - The random distribution seen in the image is pathognomonic for hematogenous spread via pulmonary arteries, not lymphatic or bronchial venous routes

Q: The following CT chest shows presence of:

Bronchiectasis. ***Bronchiectasis*** - The CT image shows widespread **dilated bronchi** with thickened walls, often described as a **"tram track" appearance**, which is characteristic of bronchiectasis. - There are also areas of **mucus plugging** and **honeycombing**, further supporting the diagnosis of severe bronchiectasis. - Bronchiectasis represents **irreversible dilation** of the bronchial tree, best visualized on high-resolution CT. *Pneumoconiosis* - This condition typically presents with diffuse small nodules, irregular opacities, or progressive massive fibrosis. - The imaging features in the provided CT, such as dilated airways, are not typical for pneumoconiosis. *Carcinoma lung* - Lung carcinoma usually manifests as a **mass**, **nodule**, or **adenopathy** on CT, often with associated features like pleural effusion or atelectasis. - The diffuse, cystic, and tubular changes seen in the image are not consistent with primary lung cancer. *Chronic bronchitis* - Chronic bronchitis is a clinical diagnosis defined by chronic cough with sputum production, and while it involves airway inflammation, it does not typically show the severe **structural bronchial dilation** seen in this CT. - CT findings in chronic bronchitis might include bronchial wall thickening, but not the widespread irreversible dilation characteristic of bronchiectasis.

Q: The given CT scan chest shows presence of:

Miliary TB. ***Miliary TB*** - The CT scan shows numerous tiny, **evenly distributed nodules** throughout both lung fields, measuring 1-5 mm in diameter, which is characteristic of **miliary dissemination** of tuberculosis. - This pattern results from the hematogenous spread of *Mycobacterium tuberculosis*, leading to the formation of small granulomas resembling millet seeds. *Endobronchial TB* - Endobronchial TB involves the **tracheobronchial tree** and typically presents with features like **bronchial narrowing**, wall thickening, or obstruction, which are not the predominant findings here. - While it can be associated with parenchymal disease, its primary manifestations are within the airways, not diffuse miliary nodules. *Bronchocele* - A bronchocele, also known as a **mucoid impaction**, appears as a **dilated bronchus** filled with mucus, often seen as a finger-in-glove appearance on imaging. - This is a localized finding and does not correspond to the widespread nodularity seen in the image. *Central bronchiectasis* - Central bronchiectasis refers to the **irreversible dilation of central bronchi**, often associated with conditions like allergic bronchopulmonary aspergillosis (ABPA). - It would appear as widened, thick-walled airways, rather than the diffuse small nodules characteristic of miliary disease.

Q: The CT chest of a patient given below shows presence of: (Recent NEET Pattern 2016-17)

Bronchiectasis. ***Bronchiectasis*** - The CT image shows a cluster of **dilated, thick-walled bronchi** in the left lung, which are characteristic findings of bronchiectasis, especially when they are larger than adjacent pulmonary arteries. - The arrow specifically points to these abnormal, saccular dilations of the bronchi, often described as a **"cluster of grapes"** or **cystic appearance**. *Pneumatoceles* - **Pneumatoceles** are typically thin-walled, air-filled cysts that develop as a complication of pneumonia or trauma, and are usually solitary or few in number, not a widespread cluster of dilated airways. - They also often resolve spontaneously, unlike the chronic, irreversible bronchial dilation seen in the image. *Normal scan* - A **normal CT chest scan** would show finely branching airways that progressively narrow as they extend peripherally, without the presence of prominent thick-walled, dilated bronchi or cystic changes. - The image clearly depicts significant structural abnormalities in the left lung making a normal scan highly improbable. *Loculated empyema* - A **loculated empyema** would appear as a collection of pus within the pleural space, characterized by **fluid attenuation**, internal septations, and enhancement of the pleura. - None of these features are the primary findings seen in this image, which shows dilated airways rather than pleural fluid collections.

Q: The following CT chest shows presence of:

Emphysema. ***Emphysema*** - The CT image displays numerous large, thin-walled **air-filled spaces** or **bullae** within both lung fields, consistent with severe emphysema. - These areas represent the destructive enlargement of airspaces distal to the terminal bronchioles, a hallmark of **emphysema**, often leading to significant loss of lung tissue. - Key feature: **destruction of alveolar walls** with coalescence into larger air spaces without visible walls. *Artifact* - An artifact would typically manifest as streaking, blurring, or other distortions that do not conform to anatomical structures or known pathologies. - The findings here are well-defined, anatomically localized spaces, representing a true pathology rather than an imaging error. *Silicosis* - Silicosis is characterized by **nodular opacities**, interstitial fibrosis, and sometimes mass-like lesions (progressive massive fibrosis), not large emphysematous bullae. - The primary findings in this CT are clearly destructive airspaces, not the fibrotic or nodular changes typical of silicosis. *Bronchiectasis* - Bronchiectasis shows **dilated, thick-walled airways** with a "tram-track" or "signet ring" appearance. - Unlike emphysema, bronchiectasis involves bronchial wall thickening and the cystic spaces are airways, not destroyed alveolar tissue. - The thin-walled bullae in emphysema lack the prominent wall thickening seen in bronchiectasis.

Q: The CXR given shows presence of:

Hydropneumothorax. ***Hydropneumothorax*** - The image clearly shows a **horizontal air-fluid level** within the pleural cavity on the right side. This distinct level indicates the presence of both **fluid (hydro)** and **air (pneumo)**. - The **collapsed lung** due to the presence of air and fluid is also visible, confirming the diagnosis. *Pleural effusion* - A pleural effusion would typically present with a **meniscus sign** (curvilinear upper border) rather than a straight horizontal air-fluid level. - While fluid is present, the presence of **air** is also evident and crucial for distinguishing it from a simple effusion. *Lung abscess* - A lung abscess is an **intraparenchymal collection of pus** within the lung tissue. - It would typically appear as a thick-walled cavity with an **air-fluid level inside the lung parenchyma**, not in the pleural space. *Collapse* - Lung collapse (atelectasis) involves loss of volume in part or all of a lung, often presenting as **increased opacification** and displacement of structures towards the collapsed side. - Although the lung is collapsed in this image, it is a *consequence* of the hydropneumothorax, not the primary finding on its own, and doesn't explain the distinct air-fluid level.

Q: A 16-year-old boy is admitted with rapidly accumulating bilateral pleural effusion. His chest X-ray is shown below. Which of the following is incorrect about the X-ray shown?

Pneumothorax. ***Pneumothorax*** - A **pneumothorax** is characterized by the presence of **air in the pleural space**, which typically appears as a **lucent area** without lung markings and a displaced visceral pleural line on X-ray. - The presented chest X-ray shows **dense opacities at the lung bases**, consistent with fluid accumulation (**pleural effusion**), not air. Pneumothorax is therefore **not present** on this X-ray. *Left-sided pleural effusion* - The image clearly shows significant **opacification of the left hemithorax** with blunting of the **costophrenic angle** and obscuring of the left hemidiaphragm. - This finding is consistent with a large amount of fluid, indicating a **left-sided pleural effusion** — this IS present. *Mediastinum shifted to right* - The **trachea** and **cardiac silhouette** are visibly displaced towards the **right side** of the chest. - This shift is a consequence of the large **left-sided pleural effusion exerting mass effect** and pushing the mediastinal structures away from the affected side — this IS present. *Bilateral ICD tubes* - There are discernible radiopaque lines extending into both pleural spaces, representing **bilateral intercostal drainage (ICD) tubes**. - These tubes are placed to drain the **accumulated pleural fluid** from both the right and left sides — this IS present.

Question 1

The image shows a standing upright chest X-ray with pleural reflection and a straight horizontal air-fluid level with absence of meniscus sign. What is the most likely diagnosis?

Accepted Answer

Hydropneumothorax

Answer

Pleural effusion

Answer

Pneumothorax

Answer

Empyema

Question 2

The CT chest image shows a hazy increased attenuation with preserved bronchial and vascular markings. What pattern is demonstrated?

Accepted Answer

Ground glass pattern

Answer

Crazy paving pattern

Answer

Honeycomb pattern

Answer

Tree-in-bud pattern

Question 3

A 45-year-old male presents with sudden onset shortness of breath and chest pain. A chest X-ray is obtained. What is the most likely diagnosis based on the image?

Accepted Answer

Pneumothorax

Answer

Pleural Effusion

Answer

Pulmonary Edema

Answer

Consolidation

Question 4

The following pattern in CT scan shown below can occur due to spread from:

Accepted Answer

Pulmonary artery

Answer

Lymphatics

Answer

Bronchial vein

Answer

All of the above

Question 5

The following CT chest shows presence of:

Accepted Answer

Bronchiectasis

Answer

Pneumoconiosis

Answer

Carcinoma lung

Answer

Chronic bronchitis

Question 6

The given CT scan chest shows presence of:

Accepted Answer

Miliary TB

Answer

Endobronchial TB

Answer

Bronchocele

Answer

Central bronchiectasis

Question 7

The CT chest of a patient given below shows presence of: (Recent NEET Pattern 2016-17)

Accepted Answer

Bronchiectasis

Answer

Pneumatoceles

Answer

Normal scan

Answer

Loculated empyema

Question 8

The following CT chest shows presence of:

Accepted Answer

Emphysema

Answer

Artifact

Answer

Silicosis

Answer

Bronchiectasis

Question 9

The CXR given shows presence of:

Accepted Answer

Hydropneumothorax

Answer

Pleural effusion

Answer

Lung abscess

Answer

Collapse

Question 10

A 16-year-old boy is admitted with rapidly accumulating bilateral pleural effusion. His chest X-ray is shown below. Which of the following is incorrect about the X-ray shown?

Accepted Answer

Pneumothorax

Answer

Left-sided pleural effusion

Answer

Mediastinum shifted to right

Answer

Bilateral ICD tubes

Chest Radiology — MCQs

Chest Radiology — MCQs

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