Conditions predisposing to ectopic pregnancy include chronic salpingitis (which may be caused by gonorrhea, but a culture would be positive only with acute infection), intrauterine tumors, and endometriosis. In about half of the cases, there is no identifiable cause. Gestational trophoblastic disease associated with a triploid karyotype with partial mole developing outside the uterus is rare. Candida produces cervicitis and vaginitis and is rarely invasive or extensive in immunocompetent patients. Syphilis is not likely to produce a tubal mass with acute symptoms (a gumma is a rare finding).