<prompt> A middle aged patients present with the complained of right hypochondrial pain. On X-ray, elevated right hemidiaphragm was seen. All of the following are the possible diagnoses exceptSubphrenic abscessAcute cholecystitisPyogenic liver abscessAmoebic liver abscess in right lobe  <response>: Ans. b. Acute cholecystitis Causes of Elevated Hemidiaphragm Above the diaphragm Decreased lung volume: Atelectasiscollapse Lobectomypneumonectomy Pulmonary hypoplasia Diaphragm Phrenic nerve palsy Diaphragmatic eventration Contralateral CVA:usually MCA distribution Below the Diaphragm Abdominal tumour Subphrenic abscess Liver abscess Amebic and pyogenic Radiological findings of Acute Cholecystitis USG findings: Presence of gallstones, thickening of the GB wall 4 mm, pericholecystic fluid, GB distention USG: IOC for diagnosing acute cholecystitisQ sensitivity 85, specificity 95. HIDA scan: Gold standarddeg for diagnosing acute cholecystitis HIDA scan: No filling of GB with the radiotracer 99mTc-HIDA after 4 hours indicates an obstructed cystic ductQ 