Test Details: Immunohistochemical testing is carried out on resected tissue specimen. This testing helps to identify specific antigens (proteins) within tissue sections utilizing an antigen-specific antibody. Beta-Catenin is a protein encoded by CTNNB1 gene, coordinates cell-cell adhesion and gene transcription. It is commonly used in differentiating fibromatosis from other spindle cell lesions in sites such as breast, abdomen,etc