Table 4.
Clinical and pathological characteristics of SRMs that progressed to metastasis after delayed treatment.
| Cases | Sex | Age (years) | Grade | ITS (cm) | UTS (cm) | LGR (cm/year) | Duration of AS (months) | Surgical treatment | Time to metastasis after surgery | Site of metastasis | Outcome |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Male | 63 | 3 | 6.7 | 8.8 | 0.9 | 28 | RN | 9 | Pleura and lung | Mortality at 57 mo. after surgery |
| 2 | Male | 61 | 2 | 4.5 | 5.4 | 1.08 | 10 | RN | 16 | Neck | Mortality at 24 mo. after surgery |
| 3 | Female | 65 | 1 | 1.9 | 2.81 | 0.61 | 18 | RN | 14 | Lung | Alive at 20 mo. after surgery |
| 4 | Male | 58 | 3 | 0.1 | 8.0 | 4.74 | 20 | RN | 12 | Brain | Mortality at 19 mo. after surgery |
| 5 | Female | 59 | 2 | 3.6 | 7.0 | 1.28 | 32 | PN | 66 | Head of pancreas | Alive at 101 mo. after surgery |
SRMs: small renal masses; ITS: initial tumor size; UTS: ultimate tumor size; LGR: linear growth rate; RN: radical nephrectomy; PN: partial nephrectomy.