Actinomycosis may rarely involve the gallbladder or bile ducts.
Sites of involvement may include any combination of:
(1) gallbladder
(2) cholecystic duct
(3) common bile duct
Clinical features:
(1) right upper quadrant pain
(2) acute or chronic cholecystitis or cholangitis
Direct smear or histologic exam shows Gram-positive branching bacilli with or without sulfur granules.
Complications:
(1) extension of the infection into the liver
(2) fistula formation
(3) mass effect that may mimic a malignancy
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Specialty: Infectious Diseases
ICD-10: ,
