Computed tomography of cystadenoma and cystadenocarcinoma of the pancreas.

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Abstract
Ten cases of [human] cystadenoma or cystadenocarcinoma of the pancreas were examined by computed tomography (CT). All but one showed characteristic findings consisting of both cystic and solid components. Innumerable small cysts producing a honeycomb appearance were noticed in serous cystadenomas. A well-defined multilocular cystic mass containing thin, straight, and/or curvilinear septa or a unilocular cystic tumor with a papillary projection and locally thickened wall was present in mucinous cystadenomas. The CT findings in cystadenocarcinomas varied depending on the relative size of the cystic and solid portions and the grade of malignancy. CT was useful in detecting and diagnosing cystic neoplasms of the pancreas and differentiating benign serous cystadenomas from potentially malignant cystadenomas in typical cases. Aspiration biopsy is recommended when findings are equivocal.