2005 Fiscal Year Final Research Report Summary
Development of minimally invasive thyroid and parathyroid surgery
| Project/Area Number |
16591273
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
General surgery
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| Research Institution | Teikyo University |
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Principal Investigator |
TAKAMI Hiroshi Teikyo Univ, Dept Surgery, Professor, 医学部, 教授 (10146714)
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| Co-Investigator(Kenkyū-buntansha) |
IKEDA Yoshifumi Teikyo Univ, Dept surg, Associate Professor, 医学部, 講師 (20222870)
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| Project Period (FY) |
2004 – 2005
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| Keywords | Endoscopic thyroidectomy / 99m Tc-MIBI / Sentinel node guided surgery |
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| Research Abstract |
We have developed axillary and anterior chest approaches for endoscopic thyroidectomy. The mean operating time for the endoscopic procedure was significantly longer than that for conventional open surgery. All patients who were treated using the axillary approach were satisfied with the cosmetic results. The incidence of postoperative complaints after endoscopic surgery is significantly lower than that after open surgery.
The minimally invasive mini-incision approach has been performed under direct and endoscopic vision to minimize surgical invasiveness and improve cosmetic results. Our procedure differs from conventional thyroidectomy in requiring a 3-cm skin incision and in not raising of a skin flap. Since thyroidectomy is performed after extracting the thyroid gland through the small skin incision, sufficient exposure for dissection of the pretracheal and paratracheal space can be obtained.
Endoscopic thyroidectomy is the procedure of choice in well selected patients with thyroid disease. The present indications for this procedure include benign follicular adenomas less than 4 cm in diameter, low-risk papillary carcinomas less than 10 mm, oxyphilic cell tumors less than 4 cm and Graves' disease as imaged on preoperative ultrasonography. The minimally invasive mini-incision approach is indicated for patients with low-risk, well differentiated carcinomas. Total thyroidectomy and bilateral modified neck dissection is possible, if the tumor is not large.
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