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Fig. 2 | BMC Gastroenterology

Fig. 2

From: Pancreatic undifferentiated carcinoma with osteoclast-like giant cells curatively resected after pembrolizumab therapy for lung metastases: a case report

Fig. 2

Preoperative images of the pancreatic tumor. a PET-CT before pembrolizumab therapy shows a solitary mass in the splenic hilum (arrow; SUVmax: 12.8). b Abdominal CT before pembrolizumab therapy shows a low-density mass in the splenic hilum, about 20 mm in diameter (arrow). c-e A series of contrast-enhanced CT scans after pembrolizumab therapy. The mass shows slight expansion up to 25 mm in size. This tumor is located in the tail of the pancreas, including a cystic lesion surrounded by a solid component that is irregularly enhanced in the delayed phase (arrows). f-h Magnetic resonance imaging (MRI) after pembrolizumab therapy. The tumor (arrows) is composed of a high-intensity moiety on the T2-weighted image (f), and surrounding parenchyma is enhanced by contrast medium in the delayed phase (g) and shows high intensity on the diffusion-weighted image (h)

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