Table 4 Criteria perceived as being triggers for intervention
From: Management of complex renal cysts in Canada: results of a survey study
Criterion reported as being a trigger for intervention N (%) | ||
|---|---|---|
Characteristics | Bosniak III | Bosniak IV |
Progression on imaging from Bosniak III to IV | 110 (79.1) | N/A |
Growth rate of solid component above threshold (for example: > 0.5 cm/year) | N/A | 85 (61.2) |
Growth of solid component above threshold (for example: > 3 cm) | N/A | 88 (63.3) |
Growth rate of cysts above threshold (for example: > 0.5 cm/year) | 48 (34.5) | 28 (20.1) |
Doubling time of calculated volume ≤ 12 months | 39 (28.1) | 39 (28.1) |
Progression in the number of septa or calcifications | 29 (20.9) | 28 (20.1) |
Progression in the thickness of septa or calcifications | 60 (43.2) | 43 (30.9) |
Worsening or change in the wall or septa enhancement | 70 (50.4) | N/A |
Progression or development of cyst wall nodularity | 94 (67.6) | N/A |
None of the above | 2 (1.4) | 3 (2.2) |
I do not offer active surveillance | 1 (0.7) | 25 (18.0) |