Acalculous Cholecystitis
Epidemiology
Incidence : acalculous cholecystitis accounts for 10% of all acute cholecystitis cases (see also Acute Cholecystitis , [[Acute Cholecystitis]])
Acalculous Cholecystitis Occurs in 0.7-0.9% of Patients Following Open Abdominal Aortic Aneurysm Repair
Acalculous Cholecystitis Occurs in 0.5% of Patients Following Cardiac Surgery
Acalculous Cholecystitis Occurs in Up to 4% of Patients Following Bone Marrow Transplant
Sex : there is a male predominance (80% male) in acalculous cholecystitis cases occurring following surgery (in the absence of trauma)
Highest Risk Group : typically occurs in hospitalized or critically ill patients
However, Cases May Occur in the Outpatient Setting
Risk Factors
General Comments
Multiple Risk Factors are Present in Most Patients
Cardiovascular Disease
Critical Illness-Associated Disease
Gastrointestinal Disease
Ampullary Stenosis
Choledochal Cyst
Cystic Duct Obstruction by Bile Duct Percutaneous Transhepatic Catheter
Hemobilia (see Hemobilia , [[Hemobilia]])
Metastases to Porta Hepatis
Hematologic Disease
Acute Myeloid Leukemia (AML) (see Acute Myeloid Leukemia , [[Acute Myeloid Leukemia]])
Bone Marrow Transplant (BMT)/Stem Cell Transplant (SCT) (see Bone Marrow Transplant , [[Bone Marrow Transplant]])
Epidemiology : acalculous cholecystitis occurs in up to 4% of cases
Infectious Disease
General Comments : more commonly, these infections result in a cholangiopathy (commonly in the setting of AIDS), rather than cholecystitis
Ascariasis (see Ascariasis , [[Ascariasis]])
Acquired Immune Deficiency Syndrome (AIDS) (see Human Immunodeficiency Virus , [[Human Immunodeficiency Virus]])
Brucellosis (see Brucellosis , [[Brucellosis]])
Campylobacter Jejuni (see Campylobacter Jejuni , [[Campylobacter Jejuni]])
Candida (see Candida , [[Candida]])
Cholera (see Cholera , [[Cholera]])
Coxiella Burnetii (see Q Fever , [[Q Fever]])
Cryptosporidiosis (see Cryptosporidiosis , [[Cryptosporidiosis]])
Cystoisospora Belli (Formerly Known as Isospora Belli) (see Cystoisospora Belli , [[Cystoisospora Belli]])
Cytomegalovirus (CMV) (see Cytomegalovirus , [[Cytomegalovirus]])
Echinococcosis (see Echinococcosis , [[Echinococcosis]])
Epstein-Barr Virus (EBV) (see Epstein-Barr Virus , [[Epstein-Barr Virus]])
Flaviviruses (Only Selected Ones Listed) : “flavus” means yellow in Latin (originated from Yellow Fever Virus, so named because of its propensity to cause jaundice)
Hepatitis A Virus (HAV) (see Hepatitis A Virus , [[Hepatitis A Virus]])
Hepatitis B Virus (HBV) (see Hepatitis B Virus , [[Hepatitis B Virus]])
Leptospirosis (see Leptospirosis , [[Leptospirosis]])
Malaria (see Malaria , [[Malaria]])
Microsporidiosis (see Microsporidiosis , [[Microsporidiosis]])
Salmonella (see Salmonella , [[Salmonella]])
Tuberculosis (see Tuberculosis , [[Tuberculosis]])
Drugs
Other
Physiology
Gallbladder Stasis and Ischemia : results in local gallbladder wall inflammation
Concentration of Bile Salts
Gallbladder Distention
Necrosis of Gallbladder
Gallbladder Perforation : occurs in severe cases
Secondary Infection with Organisms
General Comments : secondary infection with enteric pathogens occurs after acalculous cholecystitis is established
Bacteroides (see Bacteroides , [[Bacteroides]])
Escherichia Coli (see Escherichia Coli , [[Escherichia Coli]])
Enterococcus Faecalis (see Enterococcus Faecalis , [[Enterococcus Faecalis]])
Klebsiella (see Klebsiella , [[Klebsiella]])
Proteus (see Proteus , [[Proteus]])
Pseudomonas (see Pseudomonas , [[Pseudomonas]])
Diagnosis
Blood Culture (see Blood Culture , [[Blood Culture]])
Abdominal Ultrasound (see Abdominal-Pelvic Ultrasound , [[Abdominal-Pelvic Ultrasound]])
Cholescintigraphy (Nuclear Medicine Hepatobiliary Imaging) (see Cholescintigraphy , [[Cholescintigraphy]])
Types of Cholescintigraphy Studies
Hepatobiliary Iminodiacetic Acid (HIDA)
Paraisopropyl Iminodiacetic Acid (PIPIDA)
Diisopropyl Iminodiacetic Acid (DISIDA)
Sensitivity
Specificity :
Clinical Manifestations
Gastrointestinal Manifestations
Gallbladder Perforation
Epidemiology : may occur in severe cases
RUQ Abdominal Pain (see Abdominal Pain , [[Abdominal Pain]])
Other Manifestations
Fever (see Fever , [[Fever]])
Treatment
Prognosis
References
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