Gall Bladder Perforation: An Unusual Cause of Elevated CA19-9 Levels

Elevated levels of Carbohydrate Antigen 19-9 (CA19-9) often raise suspicions of malignant disease, particularly in patients presenting with symptoms suggestive of biliary obstruction. However, interpreting CA19-9 elevation can be challenging, as it can also occur in benign conditions such as gallbladder perforation and empyema. We present a case of a 48-year-old male with jaundice, intermittent fever, and right upper quadrant pain, initially suspected to have malignancy based on markedly elevated CA19-9 levels. Subsequent workup revealed perforated gallbladder. The diagnostic journey underscores the complexity of interpreting CA19-9 levels in gallbladder pathology and highlights the importance of a comprehensive approach integrating clinical evaluation, imaging studies, and serial CA19-9 measurements. Clinicians should be aware of the potential for benign etiologies of CA19-9 elevation, particularly in the context of inflammatory biliary diseases, to avoid unnecessary invasive procedures and optimize patient management. Further research elucidating the mechanisms underlying CA19-9 elevation in benign gallbladder diseases is needed to refine diagnostic strategies and improve patient outcomes.