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Histologically, sarcoidosis of the heart is an active granulomatous inflammation surrounded by reactive oedema. The distribution of affected areas is patchy with localised enlargement of heart muscles. This causes scarring and remodelling of the heart, which leads to dilatation of heart cavities and thinning of heart muscles.
The differential diagnosis includes other types of lung disease that cause similar symptoms and show similar abnormalities on chest radiographs. Some of these diseases cause fibrosis, scarring or honeycomb change. The most common considerations include: chronic hypersensitivity pneumonitis; non-specific interstitial pneumonia; sarcoidosis
Murray indicated that fibrosis of the lungs caused by asbestos dust was a plausible cause of the patient's death. [ 30 ] [ 31 ] The death of English textile worker Nellie Kershaw in 1924 from pulmonary asbestosis was the first case to be described in medical literature, and the first published account of disease definitely attributed to ...
Sarcoidosis is a disease of unknown cause characterized by non-necrotizing ("non-caseating") granulomas in multiple organs and body sites, [12] most commonly the lungs and lymph nodes within the chest cavity. Other common sites of involvement include the liver, spleen, skin, and eyes.
High-resolution CT image showing ground-glass opacities in the periphery of both lungs in a patient with COVID-19 (red arrows). The adjacent normal lung tissue with lower attenuation appears as darker areas. Ground-glass opacity (GGO) is a finding seen on chest x-ray (radiograph) or computed tomography (CT) imaging of the lungs.
Conglomerate masses can also develop in sarcoidosis, [5] but usually near the hilae and with surrounding paracicatricial emphysema. The disease arises firstly through the deposition of silica or coal dust (or other dust) within the lung , and then through the body's immunological reactions to the dust.
Scar sarcoid (also known as "Sarcoidosis in scars") is a cutaneous condition characterized by infiltration and elevation of tattoos and old flat scars due to sarcoidosis. [2]: 710 Mucosal sarcoidosis is a cutaneous condition characterized by pinhead-sized papules that may be grouped and fused together to form a flat plaque. [2]: 711
The cause is unknown, hence the term idiopathic. [2] Risk factors include cigarette smoking, acid reflux disease (GERD), certain viral infections, and genetic predisposition. [1] The underlying mechanism involves scarring of the lungs. [1] Diagnosis requires ruling out other potential causes. [3]