Table 1.

Characteristics of the 12 patients with recurrence.

	Percent (%)
Sex	71% male, 29% female
Side	42% right, 58% left
Recurrent stone location	66.7% hilo-parenchymal, 8.3% hilum 25% parenchymal
Secondary intervention	58.4% intraoral, 41.6% external
	Mean (±SD)
Age (years)	53.75 (±11.32)
Primary stone size (mm)	13.8 (±4)
Recurrent stone size (mm)	10.4 (±4.5)
Time of recurrency diagnosis (months)	30.3 (±15.4)
Time between two operations (months)	34 (±14.7)
Growth rate (mm per year)	8.4 (±1.8)
Follow-up (months)	43 (±18)