Maccato, M.L., Estrada, R. and Faro, S. (1993) Ectopic Pregnancy with Undetectable Serum and Urine βhCG Levels and Detection of, βhCG in the Ectopic Trophoblast by Immunocytochemical Evaluation. Obstetrics and Gynecology, 81, 878-880.

has been cited by the following article:

• TITLE: Negative Pregnancy Test—Can It Confidently Rule out an Ectopic?

  AUTHORS: Avni Batish

  KEYWORDS: Ectopic Pregnancy, Methotrexate, Laparoscopic Salpingectomy, Chronic Ectopic Pregnancy

  JOURNAL NAME: Open Journal of Obstetrics and Gynecology, Vol.4 No.11, August 5, 2014

  ABSTRACT: We have presented an unusual case of ectopic pregnancy with the negative urinary pregnancy test and a very low level of serum beta-hCG (11 IU/L). Ultrasound scan revealed right adnexal mass. Medical management and laparoscopic salpingectomy allowed for a favourable outcome.