Table 2.

Evolution frequency, overall and by treatment group observed over imaging visits^a

Evolution	Overall	Albendazole	Placebo
Active → Active	97	38	59
Active → Degenerativeb	19	11	8
Active → Calcification	2	2	0
Active → Disappearance	74	50	24
Degenerative → Degenerative	87	33	54
Degenerative → Calcification	7	2	5
Degenerative → Disappearance	66	32	34
Calcification → Calcification	75	45	30
Calcification → Disappearance	35	20	15
Total	462	233	229

^anote that a single cyst may contribute multiple transitions. For example, an active cyst at baseline that progresses to degenerative between 6 mo and 12 mo and stays in the stage to the end of the study contributes four transitions: 1: baseline to 1 mo (as active to active), 2: 1 mo to 6 mo (as active to active), 3: 6 mo to 12 mo (as active to degenerative) and 4: 12 mo to 24 mo (as degenerative to degenerative).

^bdegenerative includes the colloidal and granular nodular phases of the cyst evolution.