This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Choriocarcinoma, Subject name: Gynaecology & Obstetrics
[{'content': 'Snow storm appearance on IJSG seen in: \nSelect and explain. \nA. Hydatiform mole, B. Invasive mole, C. Twin pregnancy, D. Ectopic pregnancy', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans: A (Hydatiform mole) "Sonography: Characteristic echogram of molar pregnancy is snowstorm appearance"- Dutta Obstetrics 6th/196Also know"The ultrasound appearances of testicular microlithiasis: \'SnowStorm\' testis- www.bjm.org/cgi"Sonographic appearances in neonates with generalized meconium peritonitis: the snowstorm sign"-http://b}r.birjournals. org /cgi/reprint/57/6 76/340.pdf', 'role': 'assistant'}]