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
Snow storm appearance on IJSG seen in: 
Select and explain. 
A. Hydatiform mole, B. Invasive mole, C. Twin pregnancy, D. Ectopic pregnancy
A: Hydatiform mole
Answer: A: Hydatiform mole 
Explanation: 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