Related Experiment Video
Updated: Oct 9, 2026

Imaging Features of Systemic Sclerosis-Associated Interstitial Lung Disease
Published on: June 16, 2020
Hansen's disease in a patient with a history of sarcoidosis
A E Burdick1, A Hendi, G W Elgart
1Department of Dermatology and Cutaneous Surgery, University of Miami School of Medicine, Jackson Memorial Hospital, P.O. Box 016250 (R-250), Miami, Florida 33101, USA. aburdick@med.miami.edu
Abstract:
We report a rare case of concomitant Hansen's disease (HD) and sarcoidosis. Reticulin staining may be a helpful diagnostic tool in establishing the diagnosis of sarcoidosis in skin lesions. The diagnosis of HD can be established despite negative polymerase chain reaction results for the detection of Mycobacterium leprae DNA. Finally, a well-established diagnosis of sarcoidosis does not preclude the development of another granulomatous disorder. Hence, when new lesions developed in a patient with sarcoidosis despite appropriate therapy, other concurrent diagnoses should be pursued.
Related Concept Videos
Drug Toxicity: Allergic Reactions
Pulmonary Tuberculosis I
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...
Cardiomyopathy III: Hypertrophic Cardiomyopathy
Hypersensitivity Reactions: Immune-Complex Reactions
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...
Rheumatic Heart Disease I: Introduction