Intraoperative Identification of Thyroid and Parathyroid Tissues During Human Endocrine Surgery Using the MasSpec Pen

Area of Science:

• Endocrine Surgery
• Surgical Technology
• Diagnostic Technology

Background:

• Intraoperative tissue identification in thyroid and parathyroid surgery is crucial but challenging.
• Gross inspection alone can lead to errors in distinguishing vital tissues like thyroid, parathyroid, and lymph nodes.
• Accurate identification is essential for preserving healthy tissue and optimizing surgical outcomes.

Purpose of the Study:

• To evaluate the MasSpec Pen (MSPen) technology's performance and clinical applicability for intraoperative tissue discrimination.
• To assess the MSPen's ability to differentiate between thyroid, parathyroid, and lymph node tissues during surgery.
• To determine if MSPen can provide real-time feedback to surgeons for improved decision-making.

Main Methods:

• A diagnostic/prognostic study involving 102 patients undergoing thyroidectomy or parathyroidectomy.
• The MasSpec Pen (MSPen) was used for in vivo and ex vivo analysis of thyroid, parathyroid, and lymph node tissues.
• Statistical classifiers were developed using laboratory and intraoperative data and validated on an independent test set.

Main Results:

• The MSPen achieved 92.4% overall accuracy in discriminating thyroid and parathyroid tissues compared to pathology.
• An 82.6% accuracy was observed for the independent intraoperative test set.
• High accuracies were also achieved in distinguishing thyroid from lymph node (97.5%) and parathyroid from lymph node (96.1%) tissues.

Conclusions:

• The MasSpec Pen demonstrates high performance in intraoperatively discriminating between thyroid, parathyroid, and lymph node tissues.
• This technology shows potential for providing surgeons with near real-time tissue identification feedback.
• The MSPen may assist in surgical decision-making, contributing to better preservation of healthy tissue and improved patient outcomes.