This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hydatidiform Mole - Molar Pregnancy, Subject name: Gynaecology & Obstetrics
Molar pregnancy diagnosis is by- 
Select and explain. 
A. USG, B. CT, C. MRI, D. X-RAY
A: USG
Answer: A: USG 
Explanation: Ans. is 'a' i.e., USG Investigations for molar pregnancyo CBC & blood groupingo LFT, RFT & Thyroid friction testso Sonography - "snow storm appearance"is characteristic.o Quantitative estimation of HCG-High litre in urine, diluted upto 1 in 200 to 1 in 500 beyond 100 days of gestation is very much suggestive. Rapidly increasing value of serum HCG (>100,000Miu/100ml).o Plain X-ray abdomen - if uterine size is more than 16 weeks, a negative fetal shadow is of help,o Straight X-ray chest - for pulmonary embolismo CT & MRI - not routinely usedo Histopathologv of the products of conception is definitive.