<prompt> A female presents with 8 weeks amenorrhea with pain left lower abdomen. On USG, there was thick endometrium with mass in lateral adnexa. Most probable diagnosis:Ectopic pregnancyTorsion of dermoid cystTubo-ovarian massHydrosalpinx  <response>: Ans. is a, i.e. Ectopic pregnancyRef Williams Obstetrics 23e, p 242, 243; Dutta Obs. 7e, p 181A female with 8 weeks amenorrhea with pain left lower abdomen and on USG, thick endometrium with mass in lateral adnexa is suggestive of ectopic pregnancy. 