TABLE 1.
General Clinical Characteristics of Patients With Sacrococcygeal Yolk Sac Tumor
| Characteristics | No. Patients (%) |
|---|---|
| Sex | 26 |
| Male | 11 (42.3) |
| Female | 15 (57.8) |
| Age (y) | |
| Median | 1.7 |
| Range | 0-5 |
| Stage | |
| II | 3 (11.5) |
| III | 11 (42.3) |
| IV | 12 (46.2) |
| Initial tumor size | |
| ≤3 cm×4 cm | 10 (38.5) |
| >3 cm×4 cm | 16 (61.5) |
| Meatstasis | |
| Lung | 6 (50.0) |
| Liver | 1 (8.3) |
| Lung/liver | 2 (16.7) |
| Lung/bone | 3 (25.0) |
| AFP (ng/mL) | |
| ≤60,000 | 12 (46.2) |
| >60,000 | 14 (53.8) |
| Surgery | |
| Upfront surgery | 6 (23.1) |
| After chemotherapy | 20 (76.9) |
| Pathologic response to neoadjuvant chemotherapy | |
| Necrosis | 9 (45.0) |
| Microscopic residual disease | 11 (55.0) |
| No. relapse | |
| 0 | 14 (53.8) |
| 1 | 5 (19.2) |
| 2 | 3 (11.5) |
| 3 | 2 (7.7) |
| 4 | 1 (3.8) |
| 6 | 1 (3.8) |
AFP indicates alpha-fetoprotein; No, number.