Laparoscopically extracted persistent hematoma of hCG-negative tubal pregnancy, after successful expectant treatment: a case report

Objective: Report a relatively rare case of persistent hCG-negative tubal pregnancy.Case report: The patient, a 21-year-old female, underwent successful expectant therapy for ectopic pregnancy. Serum hCG was soon undetectable, BBT measurement became biphasic, and menstruation resumed after 3 months. Meanwhile, a 6.0 x 3.5 cm growth, resembling endometrioma, was identified in the pelvis. With laparoscopy, the mass was confirmed as the persistent tubal hematoma of an ectopic pregnancy. The products of conception were extracted, and ostomy of the salpinx was done.Conclusion: In the event of an hCG-negative endometrioma-like pelvic mass, especially with known prior pregnancy, the residual hematoma of ectopic implantation must be considered.