CHEE-106 — 2023 RSNA Certificate of Merit Award
Beyond the Black Holes: A Multidisciplinary Approach to Cystic Lung Disease
Chest Imaging
CHEE | Chest Imaging Education Exhibits
Presented on Sunday, November 26, 2023 9:00 AM
Author: Lawrence Guan, MD
*Teaching Points: Diffuse cystic lung diseases (DCLD) are characterized by thin-walled, air-filled spaces with normal intervening lung parenchyma. Certain entities can mimic or be mistaken for lung cysts such as emphysema, cavitary lesions, honeycombing, and cystic bronchiectasis. These are a diverse group of disorders with a variety of underlying causes including hereditary, neoplastic, infectious, inflammatory, lymphoproliferative, and smoking-related. High-resolution chest CT plays a central role in the evaluation of patients with DCLD’s and it is not uncommon for these disorders to be discovered during imaging for other reasons. Therefore it is important for the radiologist to be aware of these conditions and their associations, as they may be the first to suggest the diagnosis. An approach to the characterization of cystic lung disease will be reviewed including imaging and clinical clues which can aid in suggesting one diagnosis over another.
*Table of Contents/Outline:
1. Introduction.
2. Examples of cases:
a. Mimics of lung cysts
b. Smoking-related: Pulmonary Langerhans Cell Histiocytosis, Desquamative Interstitial Pneumonia
c. Inflammatory: Amyloidosis, Hypersensitivity Pneumonitis
d. Hereditary: Tuberous Sclerosis/Lymphangioleiomyomatosis, Birt-Hogg-Dube, Neurofibromatosis, Ehlers Danlos Syndrome, Sickle Cell Disease
e. Lymphoproliferative: Lymphocytic Interstitial Pneumonia, Follicular bronchiolitis
f. Neoplastic: Cystic metastases, Treated metastases
g. Disorders with cystic component: Bronchopulmonary sequestration, Congenital pulmonary airway malformation, Bronchogenic cyst
h. Miscellaneous: Infectious/Postinfectious, Posttraumatic
3. Conclusion.
Disclosure: L. Guan: None.
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