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  • Title: Solitary true cyst of the pancreas in an adult: report of a case.
    Author: Takahashi O, Kondo S, Hirano S, Ambo Y, Tanaka E, Morikawa T, Okushiba S, Kato H.
    Journal: Int J Gastrointest Cancer; 2001; 30(3):165-70. PubMed ID: 12540029.
    Abstract:
    BACKGROUND: Solitary true cyst of the pancreas is rare in adults, and the differential diagnosis of cystic lesions of the pancreas is challenging. AIM OF THE STUDY: To describe a solitary true cyst of the pancreas in an adult and discuss the differential diagnosis. METHODS: A 50 yr old woman presented with a mass lesion in the right upper quadrant of the abdomen. Abdominal computed tomography showed a cystic lesion, with a maximum diameter of 12 cm, between the inferior surface of the liver and the ascending colon. The cyst was homogenous and had smooth edges. On magnetic resonance imaging, a unilocular cyst was seen that was low intensity on T1-weighted images and very high intensity on T2-weighted images. No connection between the cyst and the pancreatic ductal system was demonstrated on endoscopic retrograde cholangiopancreatography. Laparotomy was performed with a presumptive diagnosis of cystic tumor of the pancreas. RESULTS: On pathologic examination, the cyst was serous and was lined with a single layer of normal cuboidal epithelium that was periodic acid Schiff stain negative. Meticulous examination failed to identify honeycomb-like microcysts characteristic of serous cystadenoma. The final diagnosis was a solitary true cyst of the pancreas. CONCLUSION: The differential diagnosis of solitary true cyst from other cystic lesion of the pancreas usually is based on histology. Particular care must be taken to distinguish this lesion from macrocystic serous cystadenoma.
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