Arterioportal shunt incidental to treatment with oxaliplatin that mimics recurrent gastric cancer

Figure 1 On admission, computed tomography revealed a bulky ulcerative mass with direct invasion of pancreas and left diaphragm (A and B). After 3 cycle of neoadjuvant chemotherapy (capecitabine and oxaliplatin), the mass had markedly decrease (C and D).

Figure 2 After total six cycle of chemotherapy (capecitabine and oxaliplatin), dynamic computed tomography showed an arterial enhanced mass like lesion. A: Pre-enhanced image; B: Arterial phase image; C: Portal phase image; D: Delayed phase image.

Figure 3 Dynamic magnetic resonance imaging demonstrated an arterial enhance mass like lesion as same as computed tomography scan. A: Pre-enhanced image; B: Arterial phase image; C: Portal phase image; D: delayed phase image.

Figure 4 This arterial enhances mass like lesion had a hypermetabolism in positron emission tomography computed tomography.

Figure 5 After adjuvant chemotherapy without oxaliplatin, the arterial enhance lesion disappeared. A: PET CT; B: Arterial phase image; C: Portal phase image; D: Delayed phase image.