Table 3 Risk factors in the patients with asymptomatic calf DVT.
| SV (c) | SV (m) | SV (l) | Peroneal v. | Sural v. | p. tibial v. | |
|---|---|---|---|---|---|---|
| Past history of cancer | 3 | 0 | 0 | 0 | 0 | 0 |
| Cast immobilization | 1 | 1 | 0 | 0 | 0 | 0 |
| Antidepressant | 1 | 1 | 0 | 0 | 0 | 0 |
| SERM | 2 | 0 | 0 | 0 | 0 | 0 |
| Alcohol abuse | 1 | 0 | 0 | 0 | 0 | 0 |
| Liver dysfunction | 0 | 1 | 0 | 0 | 0 | 0 |
| Bed rest | 0 | 1 | 0 | 0 | 0 | 0 |
| Meniscus surgery | 0 | 1 | 0 | 0 | 0 | 0 |
DVT: deep vein thrombosis; SERM: selective estrogen receptor modulater; SV: soleal vein; c: central; m: medial; l: lateral; p. tibial: posterior tibial; v.: vein