Clinical and radiological feature of lymphoepithelial cyst of the pancreas

Figure 1 Ultrasonography and endoscopic ultrasonography findings. A: Findings of Patient #2, the cystic lesion had a hyperechoic appearance (arrow); B: Findings of Patient #3, the cystic lesion had a homogenous hypoechoic appearance (arrow); C: Findings of Patient #4, the cystic lesion displayed a mosaic pattern (arrow).

Figure 2 Computed tomography findings. All lesions were well-defined and were exophytic off the pancreatic parenchyma. The wall and septum of the cysts were enhanced. A: Findings of Patient #1, the lesion was localized in the body of the pancreas and had a multilocular cystic appearance (arrow); B: Findings of Patient #2, the lesion was localized in the tail of the pancreas and had a unilocular cystic appearance (arrow); C: Findings of Patient #3, the lesion was localized in the body of the pancreas and had a multilocular cystic appearance (arrow); D: Findings of Patient #4, the lesion was localized in the head of the pancreas and had a multilocular cystic appearance (arrow).

Figure 3 Findings of patient #1. A: Findings of T1-weighted imaging on magnetic resonance imaging (MRI). T1-weighted imaging of patient showed a higher intensity than free water (arrow), B: Findings of T2-weighted imaging on MRI. T2-weighted imaging of patient showed a lower intensity than free water (arrow); C: Findings of magnetic resonance cholangiopancreatography (MRCP). MRCP of patient showed a lower intensity than free water (arrow).

Figure 4 Findings of patient #2. A: Findings of T1-weighted imaging on magnetic resonance imaging (MRI). T1-weighted imaging of patient showed a higher intensity than free water (arrow); B: Findings of T2-weighted imaging on MRI. T2-weighted imaging of patient showed a lower intensity than free water (arrow); C: Findings of magnetic resonance cholangiopancreatography (MRCP). MRCP of patient showed a lower intensity than free water (arrow); D: Findings of diffusion-weighted imaging on MRI (arrow). Diffusion-weighted imaging of three patients showed a higher intensity than free water. The cystic lesions showed high intense signal in the central part and iso-intense in the periphery.

Figure 5 Findings of patient #3. A: Findings of T1-weighted imaging on magnetic resonance imaging (MRI). T1-weighted imaging of patient showed a higher intensity than free water (arrow); B: Findings of T2-weighted imaging on MRI. T2-weighted imaging of patient showed a lower intensity than free water (arrow); C: Findings of magnetic resonance cholangiopancreatography (MRCP). MRCP of patient showed a lower intensity than free water; D: Findings of diffusion-weighted imaging on MRI. Diffusion-weighted imaging of three patients showed a higher intensity than free water (arrow). The cystic lesions showed high intense signal in the central part and iso-intense in the periphery.

Figure 6 Findings of patient #4. A: Findings of T1-weighted imaging on magnetic resonance imaging (MRI). T1-weighted imaging of patient showed a higher intensity than free water (arrow); B: Findings of T2-weighted imaging on MRI. T2-weighted imaging of patient showed a lower intensity than free water (arrow); C: Findings of magnetic resonance cholangiopancreatography (MRCP). MRCP of patient showed a lower intensity than free water (arrow); D: Findings of diffusion-weighted imaging on MRI (arrow). Diffusion-weighted imaging of three patients showed a higher intensity than free water. The cystic lesions showed high intense signal in the central part and iso-intense in the periphery.

Figure 7 Findings of a case of serous cystic neoplasm. A: Findings of T1-weighted imaging on magnetic resonance imaging (MRI), the cystic lesion showed low intensity (arrow); B: Findings of T2-weighted imaging on MRI, the cystic lesion showed high intensity (arrow); C: Findings of magnetic resonance cholangiopancreatography, the cystic lesion showed high intensity (arrow); D: Findings of diffusion-weighted imaging on MRI, the cystic lesion showed high intensity (arrow).