Best investigation for acute cholecystitis is: (A) ERCP, (B) Oral cholecystography (OCG), (C) HIDA scan, (D) IV cholangiography
Answer is C. C i.e. HIDA Scan HIDA Scan & PIPIDA are best test to rule out acute cholecystitisQ with.--400% negative predictive value. It can be pseudo positive in chronic malnutrition, & Parenteral nutrition & alcoholic liver disease.