<prompt> In which case Immunoguided surgery is done ?Ca colonCa pancreasCa jejunumCa anal canal  <response>: Ans is a ie Ca Colon Radioinununoguided surgery RIGS is a new technology capable of detecting minimal neoplastic lesions using radiocolloids, intraoperatively. It has numerous uses in oncology. it uses colloid radiotracers, monoclonal antibodies or non-immunological tracers. Its uses are Radioguided Occult Lesion Localization ROLL and Sentinel Lymph-Node Biopsy SLNB. The malignancies mentioned in the above given web addresses of Pubmed, in which RIGS is being used are: Breast cancer - Colorectal cancer - Non small cell lung cancer 