To the Editor: The diagnosis of an ectopic pregnancy can be a difficult problem, and is even more challenging if the ectopic pregnancy is combined with a normal intrauterine pregnancy and presents as an acute abdomen. Moreover, there may be no vaginal bleeding, so that diagnosis and treatment are delayed, with serious consequences. Ultrasound can be a definitive asset in such a situation, as shown in a recent patient here.A 34-year-old woman, eight weeks pregnant, para 1, gravida 2, was admitted to the hospital with a chief complaint of pelvic pain and fainting spells since she had arisen that . . .