The Usefulness of Staining Lymph Nodes During Operations for Cancer Thyroid in Detecting the Nodes That Have Cancer

This study has been completed.
Sponsor:
Information provided by:
Faculty of Medicine, University of Alexandria
ClinicalTrials.gov Identifier:
NCT00794053
First received: November 18, 2008
Last updated: July 14, 2009
Last verified: July 2009
  Purpose

Detection of lymph nodes starting to be involved by cancer spreading from the thyroid gland during operation is useful. It saves the patient from having a second operation to remove these nodes later on when they become obvious. The problem is that there are many lymph nodes around the gland. The theory is that only one node will get the first spill of the tumour cells.

In this study the investigators are trying to use an inert colored material to inject into the tumour. This should run in the same path as the tumour cells and should therefore stain the one lymph node that will be affected first should the tumour spread.

The stained lymph node is excised and examined instantaneously for tumour affection. If it is found to be affected by the tumour, then the operation is extended to include removal of all its fellow lymph nodes. If it is found to be free from the tumour, then this patient does not have tumour spread.


Condition Intervention Phase
Thyroid Cancer
Lymph Node Metastasis
Procedure: detecting lymph node metastasis by staining
Phase 3

Study Type: Interventional
Study Design: Endpoint Classification: Safety/Efficacy Study
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Diagnostic
Official Title: The Role of Sentinel Lymph Node Biopsy (SLNB) In the Management of Differentiated Thyroid Cancer

Resource links provided by NLM:


Further study details as provided by Faculty of Medicine, University of Alexandria:

Primary Outcome Measures:
  • The lymph nodes around the thyroid tumour will be removed and examined under microscopy in all study subjects to verify that the stained node is a true representative to the state of lymph nodes as regards tumour spread [ Time Frame: the lymph nodes removed during the surgery will be examined the next day of the operation ] [ Designated as safety issue: No ]

Enrollment: 45
Study Start Date: December 2002
Study Completion Date: April 2009
Primary Completion Date: December 2008 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: study group
The members in this group will undergo intervention by having surgery and lymph node detection by dye staining
Procedure: detecting lymph node metastasis by staining
this started by collar incision, development of sub-platysmal skin flaps and separation of strap muscles in the midline. This was followed by exposure of the thyroid gland; identification of the thyroid tumour; injection of the dye into the tumour; waiting for the dye to reach the lymph nodes; identifying the stained node; labeling it as the sentinel node (SLN); performing total thyroidectomy and bilateral central neck dissection.
Other Names:
  • sentinel lymph node detection
  • staging of thyroid cancer

Detailed Description:

The study includes 45 consecutive patients diagnosed as differentiated thyroid cancer by clinical examination and/or fine needle aspiration cytology (FNAC).

Exclusion criteria are: previous neck surgery, pregnancy and known hypersensitivity to the dye used.

An informed consent was obtained from all the patients. Peroperative workup includes history taking, clinical examination, relevant laboratory investigations including thyroid hormone assay, ultrasonography of the neck with special emphasis on the thyroid focal lesion and cervical lymph nodes. FNAC was attempted in all patients.

All patients were then subjected to operation:

A systematized surgical approach was adopted for the purpose of the study: this started by collar incision, development of sub-platysmal skin flaps and separation of strap muscles in the midline. This was followed by exposure of the thyroid gland; identification of the thyroid tumour; injection of the dye into the tumour; waiting for the dye to reach the lymph nodes; identifying the stained node; labeling it as the sentinel node (SLN); performing total thyroidectomy and bilateral central neck dissection.

The resected specimen was fixed by formaldehyde, stained with hematoxylin and eosin and examined with light microscopy.

If the SLN was found to be free of malignant deposits, it was further examined by immunohistochemical staining.

Statistical analysis: Descriptive statistics were used to analyze demographic data. Sensitivity, specificity and predictive value of the SLN were calculated.

The histopathological report of the excised specimen was considered the criterion standard.

  Eligibility

Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • Patient diagnosed to have differentiated thyroid carcinoma and has no detectable cervical lymphadenopathy.

Exclusion Criteria:

  • Previous neck surgery, pregnancy and known hypersensitivity to the dye used.
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT00794053

Locations
Egypt
Alexandria University Hospitals
Alexandria, Egypt, 110226
Sponsors and Collaborators
Faculty of Medicine, University of Alexandria
Investigators
Principal Investigator: Yasser M Hamza, A Professor Faculty of Medicine, University of Alexandria
  More Information

No publications provided

Responsible Party: Yasser Hamza, UAlexandria
ClinicalTrials.gov Identifier: NCT00794053     History of Changes
Other Study ID Numbers: UAlexandria
Study First Received: November 18, 2008
Last Updated: July 14, 2009
Health Authority: Egypt: Ministry of Health and Population

Keywords provided by Faculty of Medicine, University of Alexandria:
Sentinel lymph node
thyroid cancer
neck dissection

Additional relevant MeSH terms:
Thyroid Neoplasms
Neoplasm Metastasis
Thyroid Diseases
Endocrine Gland Neoplasms
Neoplasms by Site
Neoplasms
Head and Neck Neoplasms
Endocrine System Diseases
Neoplastic Processes
Pathologic Processes

ClinicalTrials.gov processed this record on July 22, 2014