Tissue localization of detected metastases. The number of animals with metastases at different locations after treatment with 177Lu-DOTA-BR96. Abdominal denotes metastases growing inside the abdominal cavity but not within a specific organ, mostly in the mesentery, in fat tissue or in the peritoneum. Retroperitoneal metastases were found adjacent to the kidneys. The numbers within parentheses are the number of metastases found at the specified location in the same animal.