A previous retrospective study has found an increased risk of uterine
cervical atypia in women with systemic lupus erythematosus (SLE) who h
ave been treated with cytotoxic drugs. Our objective was to prospectiv
ely reveal any increased incidence of cervical atypia in SLE patients
and to evaluate the relationship to previous chemotherapy. A total of
39 SLE women were prospectively referred for cytologic PAP smears of t
he uterine cervix. A significantly higher incidence of cervical atypia
was found in SLE women (35.9%) compared with non-SLE control groups (
less-than-or-equal-to 5%; P < 0.01). No significant difference was fou
nd between the incidence of atypia in patients previously treated by c
ytotoxic medications such as cyclophosphamide pulses or methotrexate (
4 of 9) compared with SLE women not receiving cytotoxic drugs (10 of 3
0). Colposcopically directed biopsies revealed three cases of cervical
intraepithelial neoplasia (CIN) I-III (23%) among the cases with atyp
ia. We conclude that women with SLE should have regular cytologic cerv
ical smears because of a significantly increased incidence of atypia,
regardless of previous cytotoxic therapy.