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  • 131I therapy  (1)
  • postoperative outcome  (1)
  • 1
    ISSN: 1436-2813
    Keywords: Key words Papillary thyroid carcinoma ; Anaplastic carcinoma ; 131I therapy ; p53
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We report herein a case of papillary carcinoma which appeared to transform into anaplastic carcinoma during postoperative radioactive iodine-131 (131I) therapy. A 67-year-old man who was diagnosed as having papillary thyroid carcinoma with bilateral neck lymph node involvement and multiple lung metastases underwent total thyroidectomy prior to 131I therapy. Immediately after a second course of 131I therapy, the patient complained of right neck pain and swelling, and a biopsy of the swollen neck lymph node was taken. Histologic examination of this biopsy specimen revealed anaplastic carcinoma. With p53 immunohistochemical staining, both the primary tumor and the biopsy specimen were positive. We speculate that first, some DNA damage in tumor cells was induced by the initial 131I therapy, but neither DNA repair nor cell apoptosis occurred because the p53 gene was already mutated; then further DNA damage was induced by the second 131I therapy, leading to anaplastic transformation.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1436-2813
    Keywords: postoperative outcome ; insufficient operation ; thyroid cancer ; differentiated carcinoma
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We performed conservative surgery for small differentiated thyroid carcinoma, but also inadvertently carried out minimal insufficient surgery, such as enucleation (Ex) or partial lobectomy (pLx) without regional node dissection for malignant thyroid nodules. In this study, the long-term postoperative outcome after such insufficient surgical treatment was evaluated. Of 348 patients with differentiated thyroid carcinoma who underwent initial surgery between 1953 and 1976, 84 underwent either Ex or pLx and their records are herein reviewed. The frequency of recurrence from the remnant gland or regional lymph nodes was examined in relation to the tumor diameter (≤1.0 cm, tis; 1.0 cm–2.0 cm, t1; 〉2.0 cm, t2). After Ex/pLx, the recurrence rate in the tis group was 13.3% and not significantly different from that (13.6%) in the t1 group. The recurrence rate was notably increased in the t2 group. Moreover, there was no significant difference between the recurrence rate in the tis and t1 groups after Ex/pLx and that after lobectomy with nodal dissection. These results suggest that a reoperative procedure with a more extensive thyroidectomy and neck dissection might not necessarily be required immediately after minimal insufficient surgery is inadvertently carried out in patients with small differentiated thyroid carcinoma measuring 2.0 cm in diameter or less.
    Type of Medium: Electronic Resource
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