Etiologies among aplastic anemia patients referred to Fred Hutchinson Cancer Research Center (as of 2/14/97).
| Etiology . | Number of Patients . | Percent . |
|---|---|---|
| Idiopathic | 536 | 78 |
| Hepatitis | 34 | 5 |
| Chemical | 24 | 3 |
| Drugs | 26 | 4 |
| Gold | 17 | 2 |
| Paroxysmal nocturnal hemoglobinuria (PNH) | 7 | 1 |
| Pregnancy | 9 | 1 |
| Fanconi anemia | 13 | 2 |
| Dyskeratosis congenita | 7 | 1 |
| Pure red cell aplasia | 7 | 1 |
| Miscellaneous | 13 | 2 |
| TOTAL | 693 | 100 |
| Etiology . | Number of Patients . | Percent . |
|---|---|---|
| Idiopathic | 536 | 78 |
| Hepatitis | 34 | 5 |
| Chemical | 24 | 3 |
| Drugs | 26 | 4 |
| Gold | 17 | 2 |
| Paroxysmal nocturnal hemoglobinuria (PNH) | 7 | 1 |
| Pregnancy | 9 | 1 |
| Fanconi anemia | 13 | 2 |
| Dyskeratosis congenita | 7 | 1 |
| Pure red cell aplasia | 7 | 1 |
| Miscellaneous | 13 | 2 |
| TOTAL | 693 | 100 |