A case of serous cystadenoma of the pancreas with focal malignant changes |
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Authors: | Tetsuo Ohta Takukazu Nagakawa Hiroshi Itoh Luis Fonseca Itsuo Miyazaki Tadashi Terada |
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Affiliation: | (1) Department of Surgery (II), School of Medicine, Kanazawa University, Takara-Machi 13-1, 920 Kanazawa, Japan;(2) Department of Pathology (II), School of Medicine, Kanazawa University, Takara-Machi 13-1, 920 Kanazawa, Japan |
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Abstract: | Summary We present a serous cystadenoma of the pancreas with focal malignant changes, and describe its characteristic histological features. On gross examination, a tumor was present on the anterior surface of the body of the pancreas and measured approx 25×25⋻20, mm. Microscopically, most tumor cells showed the typical histological features of serous cystadenoma, characterized by a microcystic architecture and glycogenrich cells with a uniform and bland appearance. However, in some areas, a tendency to papillary structures with fibrovascular cores was noted. These papillary lesions were composed mainly of nonmucinous, glycogen-poor epithelial cells, the nuclei of which showed a mild atypia. In addition, vascular and perivascular invasion was focally observed. However, there was no clinical evidence of local or distant metastasis. From these findings, we diagnosed this lesion as a serous cystadenoma of the pancreas with focal malignant changes rather than a serous cystadenocarcinoma of the pancreas. |
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Keywords: | Serous cystadenoma of the pancreas malignant change vascular invasion serous cystadenocarcinoma of the pancreas |
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