Thyroid Cancer
Conditions
Keywords
thyroid cancer, lateral neck lymph node, lymph node mapping, neck dissection, sentinel lymph node
Brief summary
This study includes papillary thyroid cancer patients who have unpalpable lateral neck lymph nodes but suspicious on ultrasound and/or CT. Carbon nanoparticles is used as the tracer for lateral neck lymph node mapping.
Interventions
Lateral neck sentinel lymph node biopsy is performed in all patients in Arm B.
Modified lateral neck dissection (compartment II-V) is performed in all patients in Arm A, and some of the patients in Arm B (according to sentinel lymph node biopsy results).
Super selective lateral neck lymph node dissection is performed in some of the patients in Arm B (according to sentinel lymph node biopsy results).
Sponsors
Study design
Eligibility
Inclusion criteria
* Newly diagnosed papillary thyroid cancer * The maximum diameter of the thyroid cancer \<3 cm with enough normal thyroid tissue for tracer injection * Unpalpable lateral neck lymph nodes * Ultrasound and CT showed suspected lateral neck lymph nodes \<2 cm
Exclusion criteria
* Previously treated thyroid cancer * High risk thyroid cancer (e.g. with severe extra-adenial invasion or extensive lymph node metastasis or poorly differentiated thyroid cancer) * Patients with distant metastasis
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Lymph node counts | 1 month after surgery | Dyed versus undyed lymph node counts in lateral neck compartments |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Lymph node metastasis rate | 1 month after surgery | The rate of lymph node metastasis in lateral neck compartments |
Countries
China