Sarcoidosis
Related Experiment Video
Updated: Nov 12, 2026

Imaging Features of Systemic Sclerosis-Associated Interstitial Lung Disease
Published on: June 16, 2020
1Division of Pulmonary and Critical Care Medicine and Internal Medicine, Mayo Clinic Rochester, MN 55905.
Abstract:
Sarcoidosis is a systemic granulomatous process of unknown cause. Pathologically, it is characterized by noncaseous granuloma, and in more than 90% of patients, the lung or intrathoracic lymph nodes are affected. A roentgenographic staging system (stages I, II, and III), based on the appearance of the plain chest roentgenogram, conveys important information about prognosis, degree of symptoms, and pulmonary function abnormalities. The diagnosis should be confirmed by histopathologic examination and exclusion of known causes for the noncaseous granulomatous reaction. When indicated, treatment with alternate-day regimens of prednisone is highly effective. Serial chest roentgenography, pulmonary function studies, and the serum angiotensin-converting enzyme level are useful for monitoring the course of the disease.
Related Concept Videos
Rocky Mountain Spotted Fever
Pulmonary Tuberculosis II
Here is a detailed explanation of its pathophysiology:
Transmission: The process begins when a person inhales droplet nuclei containing M. tuberculosis. These are typically released into the air when an individual with pulmonary or...
Leishmaniasis
Pulmonary Tuberculosis III
The first classification is based on the development of the disease, and it includes the following categories:
Toxoplasmosis
Other Pulmonary Disorders