99mTc-nanocolloid + Patent Blue V

This is a dual-agent combination used primarily for sentinel lymph node (SLN) mapping and biopsy, especially in cancers such as breast cancer and vulvar cancer. The formulation combines two agents: - **99mTc-nanocolloid**: A radiopharmaceutical consisting of technetium-99m labeled to a human serum albumin nanocolloid. It emits gamma radiation, allowing preoperative imaging (e.g., SPECT/CT) and intraoperative detection using a gamma probe. - **Patent Blue V**: A synthetic triphenylmethane dye that stains lymphatic vessels and nodes blue, providing visual guidance during surgery. The combination leverages both radioactive (gamma probe) and colorimetric (visual blue staining) modalities to improve SLN detection rates compared to either agent alone. This dual-modality approach is considered standard-of-care in many settings due to its high sensitivity for SLN identification[2][3][5]. However, Patent Blue V carries risks of allergic reactions including rare anaphylaxis[2][5].

Brand names

None known for the specific combination; individual components may have brand names.

Other names

technetium-99m nanocolloid + patent blue VTc-99m nanocolloid + patent blue dye