FIG. 2.

CONSORT diagram of included and excluded patients. Between September 2009 and February 2019, 327 patients with CAs, either solitary/sporadic or multifocal/familial, were screened. One hundred thirty-five patients were excluded from our study. One hundred ninety-two patients were included, of whom 144 did not have clinical or radiological changes during the follow-up period. There were 53 ACs in 34 patients, and 31 SHs in 24 patients. Some patients had both AC and SH events. In the diagram, n refers to the number of patients who were stable, or had AC or SH events.