Which of the following statements about primary amyloidosis is accurate?

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It predominantly affects the heart, skin, and muscles.No related illness is present in 70% of patients.Half of the patients exhibit plasma cell disorders like multiple myeloma.All the above statements are true.

Explanation

Primary amyloidosis commonly involves the heart, skin, and skeletal muscles. Approximately 70% of cases occur without any associated diseases, while around 50% of patients have plasma cell abnormalities such as multiple myeloma. Therefore, all these statements are correct.