Acalculus cholecystitis can be both acute and chronic in the absence of stones. Although it can present acutely, acalculous cholecystitis typically presents more insidiously.
Mostly the acute form is recognized and chronic form is called biliary dyskinesia.
Jaundice in acalculus cholecystitis is known to occur because of ischemia and inflammation cystic duct gets obstructed due to edema
Diagnosis
Chronic acalculus cholecystitis is a cholescintigraphy nuclear scan (HIDA) with the administration of cholecystokinin (CCK). After the . A calculated ejection fraction of 35% or less may be indicative of hypokinetic functioning of the gallbladder. An ultrasound of the gallbladder may also be useful. If this shows a thickened gallbladder wall of over 3.5 mm, this may be due to cholecystitis.