Indium In 111 capromab pendetide (ProstaScint; Cytogen Corporation), also known as CYT-356, is an indium-111-labeled monoclonal antibody that recognizes a specific cytoplasmic membrane antigen on prostatic carcinoma cells. Indium In 111 capromab pendetide is used as a diagnostic imaging agent in patients with prostate cancer who are at high risk for metastasis or recurrence of the disease.