Cholecystitis with out gallstones?

I just had my gallbladder removed last week and i just got my biopsy results today on my gallbladder they said i had cholecystitis.Im trying to do some research on this so far what i have read is that people with cholecystitis have gallstones. Three months ago I was check for gallstones with a ultrasound and that came up normal. Well last week when i went to the er they did a hida scan which showed only 2 percent of my gallbladder function. My question is how did i get cholecystits if i didnt have no gallstones???? I will ask my dr next week about this when i see him. Any info would be nice thank you!!

Forgot to mentioned that i am a 27 year old male. I read that it is rare for males to have problems with there gallbladders.

At least 95% of people with acute cholecystitis have gallstones. The inflammation almost always begins without infection, although infection may follow later. Rarely, acute cholecystitis occurs in a person without gallstones (acalculous cholecystitis). Acalculous cholecystitis is a serious disease. It tends to occur after major injuries, operations, burns, bodywide infections (sepsis), and critical illnesses鈥攑articularly in people receiving prolonged intravenous feedings. It can occur in young children as well, perhaps originating as an infection (viral or other).

In chronic cholecystitis, the gallbladder is damaged by repeated attacks of acute inflammation, usually from gallstones, and may become thick-walled, scarred, and small. The gallbladder generally contains sludge or gallstones that often obstruct its outlet or the cystic duct

Gallbladder Diseases Without Stones
Gallbladder disease can occur without stones, a condition called acalculous gallbladder disease. It can be acute (arising suddenly) or chronic (persistent).

Acute acalculous gallbladder disease usually occurs in patients who are very ill from other disorders. In such cases, inflammation occurs in the gallbladder, usually from a diminished blood supply or an impaired ability to contract and empty its bile.
Chronic acalculous gallbladder disease (also called biliary dyskinesia) appears to be caused by muscle defects or other problems in the gallbladder that cause impaired motility.
Diagnosing Acalculous Gallbladder Disease
Diagnosing Acute Acalculous Gallbladder Disease. Symptoms are similar to those of acute cholecystitis with gallstones, but they may be obscured by other medical conditions, since patients with this condition are often critically ill with other illnesses
Read the web site sourses I have given.

choleycystitis is an inflammation of the gall bladder, doesn't necessarily mean gall stones, tho that is the most common cause. It can be caused by a bacterial or viral infection as well.

you can have one without the other ;o)
hope they are able to take it out soon for you, you'll feel so much better!