Buck J L, Hayes W S
Department of Radiologic Pathology, Armed Forces Institute of Pathology, Washington, DC 20306-6000.
Radiographics. 1990 Mar;10(2):313-22. doi: 10.1148/radiographics.10.2.2183300.
Microcystic adenoma is a benign pancreatic neoplasm typically seen in elderly women. Presenting symptoms and signs such as pain, weight loss, jaundice, and a palpable mass are usually observed, but the lesion may be incidental and does not necessarily require excision. The tumor is generally large and well demarcated. It contains innumerable small cysts, giving it a honeycombed appearance. On computed tomographic scans, the hypervascular tumor has attenuation values close to those of water before contrast material is administered, but it usually enhances afterward. On sonograms, it is often predominantly echogenic, although some larger cysts may be seen. A calcified central scar may be seen with either modality.
微囊性腺瘤是一种良性胰腺肿瘤，多见于老年女性。通常会出现疼痛、体重减轻、黄疸及可触及肿块等症状和体征，但该病变可能是偶然发现的，不一定需要切除。肿瘤一般较大，边界清晰。它含有无数个小囊肿，呈蜂窝状外观。在计算机断层扫描中，该富血管肿瘤在注入对比剂前的衰减值接近水的衰减值，但注入后通常会强化。在超声检查中，它通常主要呈高回声，不过也可见一些较大的囊肿。两种检查方式都可能看到钙化的中央瘢痕。
