Gynaecology & Obstetrics The criteria for diagnosing GTN are all A Persistently increasing p-hCG for 3 weeks B Plateau levels of p-hCG for 4 weeks C Theca lutein cyst > 6 cm D Histological criteria for choriocarcinoma 💡 Explanation The criteria for diagnosing GTN are all ✓ Correct Answer: C. Theca lutein cyst > 6 cm