Fig. 4From: Nivolumab in combination with radiotherapy for metastatic esophageal neuroendocrine carcinoma after esophagectomy: a case reportPositron emission tomography–computed tomography imaging at the delayed phase to evaluate the treatment response. a, b Disappearance of all lesions after 10 cycles of nivolumab in combination with radiotherapy (56 Gy)Back to article page