A 35 year old woman presents with pelvic discomfort. She hasn't had a menstrual period in six weeks but yesterday began to have some vaginal spotting with mild suprapubic pain. She is sexually active with two partners. She has smoked one pack of cigarettes a day for 5 years and is a moderate to heavy drinker.
On exam, you note a closed cervical os. A urine pregnancy test is positive. An ultrasound shows a long, closed cervix with uterine size appropriate for gestational age.
Challenge: What "kind" of abortion is this?