[Mansonella perstans filariasis after stay in Cameroon. A 19-year-old patient born in Cameroon, in Switzerland for the last 10 years].

After a spending three weeks in Cameroon, a 19-year-old woman presented in the emergency room with sudden lancinating pain in the lower abdomen, predominantly on the right side. A blood smear tested for presumed malaria showed subperiodic microfilariae of the species Mansonella perstans. The patient was treated with mebendazole (Vermox).