Abstract
Background:Pancreatic tuberculosis is an uncommon disease, presenting as hypoechoic mass on imaging mimicking malignancy. Consequently, it represents a diagnostic challenge necessitating a tissue diagnosis.Case Report:A 75-year-old female presented with progressive jaundice and weight loss; imaging with computed tomography (CT) showed a large (5.8 cm × 4.6 cm) pancreatic head mass with encasement of portal and superior mesenteric veins, peripancreatic nodes, atrophic pancreatic parenchyma, and dilated main pancreatic duct. Cancer antigen 19-9 was moderately elevated. With a diagnosis of inoperable pancreatic malignancy, she was planned for tissue diagnosis and palliative chemotherapy. Endoscopic ultrasonography (EUS) showed a heterogeneous mass with vascular invasion as in the CT. Fine needle aspiration (FNA) and biliary decompression with a plastic stent performed in the same sitting. Cytology demonstrated granuloma with caseous necrosis and presence of acid-fast bacilli. Antituberculosis treatment was started, and repeat CT after 6 months showed resolution of the mass.Discussion and Conclusion:A diagnosis of isolated pancreatic tuberculosis is rare and is difficult by clinical presentation alone; in India, it should be considered as a differential diagnosis of a pancreatic tumor. Benign lesions can also present with vascular invasions mimicking inoperable malignancy. EUS FNA is a very useful tool in accurate diagnosis of pancreatic head mass avoiding unnecessary surgeries.
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