Vigilancia en lesiones quísticas complejas y masas renales pequeñas: características radiológicas y evolución a mediano plazo

Background

The detection of renal cell carcinoma has increased due to the wider availability of tomography. However, mortality figures have remained stable.

Aim

Our aim was to observe the progression of a group of patients with complex renal cysts or solid renal tumors that were closely monitored through imaging studies.

Material and methods

Nineteen kidney tumors were retrospectively included from patients that did not wish to undergo surgical treatment or whose comorbidities were contraindications for it. Each lesion was characterized and compared through initial and final CT-urography during follow-up.

Results

Sixty-eight percent of the lesions were catalogued as solid masses and 31% as complex cysts. Median surveillance was 33 months (range 6-88) and the mean growth rate was 0.2 cm/year. There was only one case of clinical stage progression.

Discussion

Strict surveillance of complex cystic and solid renal masses is a valid option in the initial management of some patients with small renal masses, mainly when comorbidities or age are contraindications for surgical treatment, due to their slow growth and low risk for progression. Nevertheless, more information at the national level is needed to have a higher level of evidence.