Oral Presentation - 33
Results of intraoperative game probe survey and frozen section in surgical treatment of parathyroid adenoma in children
Tutku Soyer 1, İbrahim Karnak 1, Murat Tuncel 2, Saniye Ekinci 1, Fatih Andıran 1, Arbay Özden Çiftçi 1, Zuhal Akçören 3, Diclehan Orhan 3, Ayfer Alikaşifoğlu 4, Alev Özön 4, Feridun Cahit Tanyel 1
1 Hacettepe University Faculty of Medicine Department of Pediatric Surgery
2 Hacettepe University Faculty of Medicine Department of Nuclear Medicine
3 Hacettepe University, Faculty of Medicine, Department of Pediatric Pathology
4 Hacettepe University, Faculty of Medicine, Department of Pediatric Endocrinology
Aim: A retrospective study was performed to evaluate the results of surgical treatment and use of intraoperative gamma probe (IGP) and frozen section (FS) in children with parathyroid adenoma (PA). Methods: Children operated for PA (between 1995-2015) were evaluated for age, sex, clinical features, presenting symptoms, diagnostic methods and results of surgical treatment. Results: Seven patients were included. The mean age of the patients was 14.28 years (15-17 years) and male female ratio was 4:3. Presenting symptoms were non-specific such as weakness and abdominal pain. In one patient, two glands were involved (14.2%) and in 6 patients (85.8%) single gland adenoma was observed. Localizations of adenomas were left-inferior (n=4,57%), right-inferior (n=2,28.3%), right-superior (n=1,14.2%) and left-superior (n=1,14.2%). In case with multi-glandadenoma, the lesions were localized at right-superior/left-inferior glands. In one case, involved gland was localized in the thymus. The mean size of adenomas was 15,25mm (4-23mm) and all of the cases were underwent USG and Tc99m-sestamibi scan. During surgical excision, FS were used in 6 cases, and 4 cases had IGP after preoperative radioactive substance injection. In one patient, injection was performed directly into the adenoma and 3 patients had systemic injection. Patient who had injection directly into involved gland had positive gamma counts in adjacent tissues and diagnosis was also confirmed with FS. In one of the cases, adenoma excision was performed with only IGP without FS. None of the patients had peroperative and postoperative complications. Conclusion: PA is rare in children and appropriate gland excision can be obtained by the help of IGP after injection of radioactive substance, and FS as well as intraoperative parathormone screening. Preoperative radioactive substance injection helps identification of atypical localization and prevents extensive dissection. Since direct injection of involved gland may cause accumulation of radioactivity in the adjacent tissues, systemic injection revealed better results.