Purpose: Several risk factors related with chronic complications and mortality related with liver injury of mushroom poisoning were reported. But, there were few reports about the long term outcomes. The aim was to evaluate the long term clinical outcomes in mushroom poisoning regarding the risk factors. Methods: Clinical data were reviewed and outcomes were evaluated with medical records and/or telephone interviews. The patients who had one or more risk factors such as markedly elevated aspartate aminotransferase (AST) or alanine aminotransferase (ALT), prolonged prothrombin time (PT) were classified into high risk group. Patients had no risk factor classified into low risk group. Results: From June 1989 to December 2003, nineteen mushroom poisoning patients admitted to Asan Medical Center, seven were male, and mean age was $58\pm9$ years old. All the patients accidentally ingested and the interval from ingestion to symptom onset was $9\pm4$ hours. There were four patients in high risk group, and fifteen in low risk group. In high risk group, peak AST was $2,263.3\pm1,303.0IU/L$most prolonged PT was $38.0\pm27.4\%$, and stuporous mental status was shown in one patient. In low risk group, laboratory values returned to the normal values but histological evaluation revealed specific features of toxic hepatitis on sixth hospital day. Chronic complications such as persistent or chronic hepatitis, mortality was not occurred during follow up period (from 10 months to 16 years) in both groups. Conclusion: Although the number of patients were small, there were no chronic complications or mortality related with liver injury after mushroom poisoning regardless risk factors of chronic complications and mortality.
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