Characteristics of study patients (N=44)
| Characteristic | |
| Sex, n (%) | |
| Female | 23 (52) |
| Male | 21 (48) |
| Caucasian race, n (%) | 41 (93) |
| African-American | 3 (7) |
| No of pedigrees | 42 |
| Mean age at diagnosis (years) | |
| Mean±SD (range) | 52.5±11.9 (22–78) |
| N (%) fulfilling WHO criteria for SPS | |
| I | 10 (23) |
| II | 0 (0) |
| III | 34 (67) |