Question

which of the following is a condition found in the lungs that produces uniform non - caseating granulomas. this is seen most commonly in blacks, and may produce bilateral involvement of the hilar lymph nodes as well as renal failure and/or heart failure.
sarcoidosis
laryngotracheobronchiectasis
mucoviscidosis
systemic sclerosis

Explanation:

Sarcoidosis is a disease that causes non - caseating granulomas, is more common in Black populations, can involve hilar lymph nodes bilaterally, and may lead to renal or heart failure. Laryngotracheobronchiectasis is related to bronchial dilation in the larynx - trachea - bronchus area. Mucoviscidosis (cystic fibrosis) mainly affects the lungs with mucus - related issues and has different pathological features. Systemic sclerosis is a connective tissue disease with skin and organ fibrosis, not characterized by non - caseating granulomas in the lungs as described.

Answer:

A. Sarcoidosis