SPECT/CT for preoperative sentinel node localization

Area of Science:

• Nuclear Medicine
• Radiology
• Surgical Oncology

Background:

• Sentinel node biopsy is crucial for cancer staging.
• Accurate sentinel node identification impacts treatment decisions.
• Conventional imaging may present limitations in complex cases.

Purpose of the Study:

• To review the utility of SPECT/CT in sentinel node detection and localization.
• To highlight indications for SPECT/CT in specific patient populations.
• To assess SPECT/CT's role in clarifying ambiguous imaging findings.

Main Methods:

• Review of existing literature and clinical data on SPECT/CT for sentinel node imaging.
• Analysis of SPECT/CT's ability to identify sentinel nodes and non-nodal tracer uptake.
• Evaluation of SPECT/CT performance in diverse oncological scenarios.

Main Results:

• SPECT/CT effectively detects and localizes sentinel nodes.
• It identifies additional, extra-axillary, or non-nodal tracer accumulations.
• SPECT/CT is particularly useful in head/neck melanoma, breast cancer with extra-axillary nodes, and pelvic tumor drainage.

Conclusions:

• SPECT/CT improves sentinel node detection and localization accuracy.
• It is indicated for complex lymphatic drainage patterns and inconclusive conventional imaging.
• SPECT/CT enhances diagnostic confidence and potentially optimizes patient management.