Affiliation:
1. Kochi Medical School (KMS) Kochi University Kochi Japan
2. Department of Surgery Atagi Hospital Kochi Japan
Abstract
Key clinical messageAn 89‐year‐old patient with gallbladder neuroendocrine neoplasms (GB‐NENs) and lung cancer metastasis underwent nivolumab monotherapy, resulting in tumor shrinkage. Surgery and adjuvant nivolumab showed efficiency despite low expression of PD‐L1.