The clinical features of Caesarean Scar Pregnancy:

1. Delayed or abnormal menstruation: Women with a cesarean scar pregnancy may experience irregular or delayed menstrual cycles. They may also have positive pregnancy test results.
2. Vaginal bleeding: Vaginal bleeding is a common symptom of Caesarean Scar Pregnancy. It may range from light spotting to heavy bleeding and can occur at irregular intervals. The bleeding may be painless or associated with abdominal pain or discomfort.
3. Abdominal pain: Some women may experience abdominal pain, typically located in the lower abdomen. The pain may be mild or severe and can be continuous or intermittent. It may also radiate to the back or shoulder.
4. Abnormal ultrasound findings: Transvaginal ultrasound is the main diagnostic tool for Caesarean Scar Pregnancy. It can reveal the presence of the gestational sac within the scar tissue of the previous cesarean section incision. The gestational sac is typically seen in the anterior lower uterine segment, near the bladder.
5. Rupture of the scar: If left untreated, Caesarean Scar Pregnancy can lead to the rupture of the scar tissue, which can cause severe abdominal pain, heavy bleeding, and signs of shock. Rupture of the scar is a life-threatening complication that requires immediate medical attention.
6. Elevated beta-human chorionic gonadotropin (β-hCG) levels: Blood tests to measure β-hCG levels may show higher than normal levels in Caesarean Scar Pregnancy. However, β-hCG levels alone cannot confirm the diagnosis and must be combined with ultrasound findings.