<prompt> In which case Immunoguided surgery is doneCA colonCA pancreasCA jejunumCA anal canal  <response>: Ans is a ie Ca Colon Radioimmunoguided 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 cancerColorectal cancerNon-small cell lung cancer 