case_images: PMC10565847_01
case_images: (A) An abdominal CT scan showed a large mass located at the tail of the pancreas, with solid components (white arrow) of isodensity and a central cystic area (black arrow). A contrast-enhanced CT scan showed that the solid components (white arrows) of the mass were slightly enhanced at the arterial (B) and venous (C) stages, and the cystic lesion area was not enhanced (black arrows). The corresponding location showed isosignal on T2WI (D) and a slight hyposignal on T1WI (E). On contrast-enhanced T1WI sequences (F), the solid components of the tumor showed mild-to-moderate enhancement (white).
case_images: fonc-13-1259236-g001.jpg
case_images: PMC10565847_01_fonc-13-1259236-g001.jpg
case_images: f1
case_images: It was suspected to be a malignant tumor ( Figure 1 ). Unfortunately, CT examination of the patient 5 months after surgery revealed liver metastases ( Figure S1 ), and the patient was subsequently lost to follow-up.
case_images: (A) The maximum intensity projection of the PET/CT shows a large tumor with increased 18F-FDG uptake in the left mid-upper abdomen (blue arrow) and two nodules with increased FDG uptake on its inner side (black and red arrows). Moreover, non-specific inflammatory lymph node uptake of 18F-FDG was observed in the mediastinum and hilar area (triangular arrows). Axial images B, C, CT; D, E, PET; F, G, PET/CT fusion images) showed the corresponding large tumor at the tail of the pancreas (blue arrows) and the corresponding two nodules at the left foot of the diaphragm (black and red arrows) and retroperitoneum (red arrows), with increased 18F-FDG uptake.
case_images: fonc-13-1259236-g002.jpg
case_images: PMC10565847_01_fonc-13-1259236-g002.jpg
case_images: f2
case_images: Moreover, multiple nodules with increased FDG uptake were observed in the left diaphragm foot and retroperitoneum ( Figure 2 ).
case_images: Tumor histopathology and immunohistochemical staining. (A) Hematoxylin-eosin staining: microscopically, the tumor cells of relatively uniform size were diffused. (B-D) Immunohistochemical staining showed that tumor cells positively expressed MPO (B), CD43 (C), and CD34 (D).
case_images: fonc-13-1259236-g003.jpg
case_images: PMC10565847_01_fonc-13-1259236-g003.jpg
case_images: f3
case_images: Hematoxylin and eosin (H&E) staining revealed small round tumor cells, with eosinophilic particles visible in the cytoplasm, and deeply stained nuclei showing mitotic images ( Figure 3 ).