Organ involvement of SLE is in:

 # Organ involvement of SLE is in:
a. kidney and Lungs 
b. kidney and heart 
c. lungs and heart 
d. heart and spleen 

The correct answer is B. Kidney and heart.

Systemic lupus erythematosus is a serious cutaneous-systemic disorder which characteristically manifests repeated remissions and exacerbations. This disease has its peak age of onset at about 30 years in females but about 40 years in males. The disease may occur in childhood as reported by Jacobs. Prevalence rates are higher in females than in males. A female-to-male ratio of approximately 2 : 1 occurs before puberty, and a ratio of 4 : 1 occurs after puberty.

The generalized manifestations of the systemic disease are referable to the involvement of various organs, including the kidney and heart. In the kidney, fibrinoid thickening of glomerular capillaries occurs, producing the characteristic ‘wire loops,’ which may be sufficient to result in renal insufficiency. The heart may suffer from an atypical endocarditis involving the valves, as well as fibrinoid degeneration of the epicardium and myocardium. The widespread tissue involvement and the nature of the lesions have led to the inclusion of this disease in that group known as the ‘collagen diseases,’ which also includes rheumatic fever, rheumatoid arthritis, polyarteritis nodosa, scleroderma and dermatomyositis.

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