Bonus Material-35_ACCP 2025 Shah Cases

Pdf Summary

This presentation by Dr. Rakesh Shah, Chief of Thoracic Radiology at Northwell Health, covers multiple thoracic radiology case studies focused on the appropriate diagnosis and management of various lung and pleural conditions. The format consists of clinical questions accompanied by diagnostic imaging findings and detailed differential diagnoses.

Key topics addressed include:

1. <strong>Round Atelectasis</strong>: Characterized by round peripheral opacities, pleural abnormalities, and the comet-tail sign due to curved bronchi and vessels.

2. <strong>Congenital Lung Malformations</strong>: Including bronchial atresia (round or branching opacities with hyperlucency), pulmonary sequestration (disorganized lung with systemic blood supply), arteriovenous malformations, and allergic bronchopulmonary aspergillosis (ABPA).

3. <strong>Chest Radiograph Interpretation</strong>: Differentiating pneumonia, pneumothorax, atelectasis, and loculated effusions, with particular focus on left upper lobe atelectasis.

4. <strong>Tracheal Abnormalities</strong>: CT features of post-intubation strictures, relapsing polychondritis causing circumferential thickening sparing the posterior membrane, and tracheobronchopathia osteochondroplastica.

5. <strong>Aspergillus Infections</strong>: Discussion of saprophytic fungus balls (mycetoma, with the characteristic Monad sign), allergic bronchopulmonary aspergillosis, invasive aspergillosis (halo and air-crescent signs), and related imaging features.

6. <strong>Diffuse Lung Diseases</strong>: Hypersensitivity pneumonitis with the three-density "head cheese" sign indicating mixed infiltrative and obstructive disease; excipient lung disease from medication fillers causing granulomatous reactions (talcosis); pulmonary alveolar microlithiasis featuring intraalveolar calcifications.

7. <strong>Pleural Diseases</strong>: Differentiating pleural metastases, mesothelioma, splenosis, empyema versus lung abscess (note lenticular vs spherical shapes and split pleura sign).

8. <strong>Endobronchial Lesions</strong>: Including carcinoid tumors and metastases with their radiologic appearances.

9. <strong>Sarcoidosis</strong>: Multiple presentations featuring hilar adenopathy, nodules, calcifications, and fibrosis.

10. <strong>Occupational and Other Exposures</strong>: Impact on lung parenchyma shown via inspiratory and expiratory imaging demonstrating air trapping and fibrosis.

Throughout, the lecture emphasizes radiologic patterns assisting in diagnosis and the most appropriate diagnostic steps such as PET scans, biopsies, or follow-up imaging. The cases highlight the importance of integrating clinical history, imaging morphology, and characteristic signs in thoracic radiology for accurate diagnosis.

Quotes interspersed remind learners of the value of life and service to others, underscoring the human dimension of medical practice alongside technical proficiency in imaging interpretation.

Meta Tag

Concept Round Atelectasis

Concept Airway Findings

Concept Parenchymal Abnormality

Concept Atelectasis

Concept Empyema

Keywords

thoracic radiology

lung disease

pleural disease

round atelectasis

aspergillosis

tracheal abnormalities

hypersensitivity pneumonitis

sarcoidosis

endobronchial lesions

chest imaging

Round Atelectasis

Airway Findings

Parenchymal Abnormality

Atelectasis

Empyema