Mucosal itivolvement is a commoti finding in pemphigus vuigaris (PV). especially oral lesions, which precede skin blisters in up to 70% of cases (1). Less frequently, other epithelial tissues that also express desinoglein 3 iiiay be affected, for example, pharynx, larynx, nasal cavity, conjunctiva, anus, petiis, urethra, vagina, vulva and oesophagus. The occurrence of PV lesions involving the cervix uteri has rarely been reporied in the literature. The relevance of the involvement of this site lies in the fact that acantholytic cells in routine cervical smears may lead to false positive diagnoses of cervical neoplasia.
CASE REPORTA 22-year-o!d woman first presented to our dennatological department with painful, rounded ulcerations on the oral mucosa, desquamative gingivitis and absence of cutaneous lesions. She had been diagnosed previously and treated for PV five years earlier in another institution, and the patient related that cutaneous lesions were present at that time.Histoiogical examination of the oral mucosa biopsy showed a suprabasal cleavage with acantholysis. Direct immunofluorescence revealed deposition of IgG and C3 in the intercellular spaces of the epithelium. Indirect immunoHuoreseence analysis using normal human foreskin sections as substrate exhibited intraepithelial IgG auto-antibodies at a 1:5120 titre. Auto-antibodies against recoinbinant desmogleins (dsg) I and 3 were detected by enzyme-linked immunosorbent assay (ELISA, MBL, Japan). The patient's serum was strongly positive for anti-dsg 3 (index value: 226; cut-off: 20) and weakly positive for anti-dsg 1 {index value: 28; cut-off: 20).After 2 years of follow-up, she experienced a period of exacerbation of her disease: her oral lesions got worse and a vegetating plaque appeared on the right axilla, which was biopsied and revealed a suprabasal acantholysis. Suprisingly. after a routine gynaecologist consultation, the patient was informed that her Papanicolaou smear was suggestive of cervical cancer. She had no gynaecological symptoms, such as dyspareunia, vaginal bleeding or discharge. The patient was then referred to our gynaecological departiiient and, on colposcopic examination, multiple erosions and a positive Nikolsky sign were noticed on the cervix (Fig. Fig. I. Multiple erosions oii the cervix and the positive Nikolsky sign {arrow).