(Of a disease) of obscure or uncertain origin.
- TTV DNA was also detected more frequently in fulminant hepatitis and persons with cryptogenic liver disease than in symptom-free donors.
- Establishing the diagnosis of cryptogenic hemoptysis in the absence of a diagnostic code indicating a likely cause for hemoptysis might also introduce some bias.
- They investigated cryptogenic hemoptysis and reported that bronchial inflammation and infection were the most frequently suspected causes.
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