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Axillary Lymph Node Metastasis of Papillary Thyroid Carcinoma: a Case Report

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Axillary Lymph Node Metastasis of Papillary Thyroid Carcinoma: a Case Report CASE ISSN: 2005-162X Clin Exp Thyroidol 2014 November 7(2): 194-200 REPORT http://dx.doi.org/10.11106/cet.2014.7.2.194 Axillary Lymph Node Metastasis of Papillary Thyroid Carcinoma: A Case Report Eun Jung Koo1 and Mi Ri Lee2 Department of Surgery, Hallym Sacred Heart Hospital, Seoul1, Department of Surgery, Dong-A University Medical Center, Busan2, Korea We report a case of axillary lymph node metastasis (LNM) as a recurrence of papillary thyroid carcinoma (PTC) in a 68-year-old male. The patient initially presented in 2009 with a 3.4×5.4 cm sized neck swelling and left cervical lymphadenopathy. He underwent total thyroidectomy and central compartment neck dissection (CCND) with left modified radical neck dissection (MRND). The pathological report confirmed PTC with metastasis of neck lymph node. On a regular follow up of positron emission tomography (PET), LNM was found on the right supraclavicular area and on the left axillary area. It was 17 months after the initial thyroid cancer had been diagnosed. The right MRND and left axillary lymph node dissections were performed in April of 2012. Pathological result confirmed metastatic PTC of left axillary lymph nodes. After recovery from the surgery, the patient got radioactive iodine therapy with I-131 180 mCi. Key Words: Axillary lymph nodes metastasis, Papillary thyroid carcinoma Thyroid function tests results including TSH (0.6 μ Introduction IU/mL; reference range, 0.3-4.1 μIU/mL), free T4 (1.44 ng/dL; reference range, 0.78-1.94 ng/dL), Papillary thyroid carcinoma (PTC) is the most common T3-RIA (117.3 ng/dL; reference range, 60-190 ng/dL) thyroid malignancy and an indolent neoplasm with an were normal. But, thyroglobulin antigen (Tg-Ag) was excellent prognosis, despite its characteristically being high (＞500 ng/mL; reference range, 5-45 ng/mL), associated with lymph node metastasis (LNM). Cervical the level of thyroglobulin antibody (Tg-Ab) (28.74 LNM is common, but axillary LNM is rare and very few IU/mL; reference range, 0-70 IU/mL) was normal. The cases have been reported. We report a case of axil- tumor marker CA 19-9 was highly elevated at 459.22 lary LNM from PTC. (normal, 0-37 U/mL), but there was no evidence of another cancer (e.g. colon cancer or pancreatic can- Case Report cer) on abdomen computed tomography (CT) and abdominal ultrasonographic finding. Colonoscopy was A 68-year-old male patient visited the Family not performed. The initial neck CT showed 3.4×5.4 Medicine Clinic with a complaint of palpable mass on cm sized mass with heterogeneous enhancement his left neck in 2009. He was transferred to the Depa- over the left lower neck and left supraclavicular area rtment of Otorhinolaryngology for further evaluation. (Fig. 1). Differential diagnosis on CT was metastatic Received April 20, 2014 / Revised May 19, 2014 / Accepted June 3, 2014 Correspondence: Mi Ri Lee, MD, PhD, Department of Surgery, Dong-A University Medical Center, Daeshin Park road 26, Seo-gu, Busan 602-715, Korea Tel: 82-51-240-2979, Fax: 82-51-247-9316, E-mail: [email protected] This work was supported by the Dong-A University research fund. Copyright ⓒ 2014, the Korean Thyroid Association. All rights reserved. This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http:// creative- commons.org/licenses/by-nc/3.0/), which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. 194 Axillary Lymph Node Metastasis of Papillary Thyroid Carcinoma: A Case Report lymphadenopathy or neurogenic tumor such as sch- des on the left lower neck and left supraclavicular wannoma or paraganglioma. Fine needle aspiration area confirmed the metastasis of PTC. Small calcifica- (FNA) of neck mass presented a few atypical epithelial tion was seen on the precontrast scan. I-123 5 milli- cell nests in acute inflammatory exudate. To rule out curie (mCi) whole body scan presented normal func- malignancy, incisional biopsy of lymph nodes was tioning thyroid tissue in both thyroid glands and cold carried out. Pathological examination of the lymph no- nodule in the left lobe (Fig. 2). The result of FNA of thyroid was suspicious for malignancy, especially of PTC. Therefore, the patient received a total thyroi- dectomy with central compartment neck dissection (CCND) and left modified radical neck dissection (MRND). Pathological test resulted in the diagnosis of PTC with follicular variant of ossification and metastasis of level III, IV, and V neck lymph node, of central com- partment lymph node, and of external jugular area lymph node. The size of the tumor was 1.5×1.2 cm, but it invaded to perithyroidal soft tissue. So the stage was T3N1bM0. After the surgery, the level of Tg-Ag was 4.26 ng/mL and that of Tg-Ab was 27.44 IU/mL (Table 1). The patient received radioactive iodine ther- apy with I-131 150 mCi. The 150 mCi therapeutic whole body scan at 48 hour, reveals two intense ac- Fig. 1. Neck CT showing large mass in left lower neck carotid cumulation of the I-131 in the mid thyroid bed and space, metastatic lymphadenopathy and left thyroid nodule. remnant pyramidal lobe, with a focal much less I-131 Fig. 2. I-123 5 mCi whole body scan showing normal functioning thyroid tissue in both thyroid gland and cold nodule in left thyroid lobe. 195 Clin Exp Thyroidol Eun Jung Koo and Mi Ri Lee uptake in the left upper thyroid bed or neck lymph months after a radioiodine ablation therapy. There was node (Fig. 3). Diagnostic I-131 scan performed 6 no longer iodine uptake in the thyroid bed (Fig. 4). Seventeen months later, an enlargement of the left ax- illary and right supraclavicular lymph nodes were de- Table 1. The serial level of Tg-Ag and Tg-Ab tected on chest CT during the regular follow up. Tg-Ag Tg-Ab Moreover, there were hypermetabolic metastatic lymph After the initial surgery 4.26 27.44 nodes in the right supraclavicular and left axillary Follow-up 17.78 43.06 18 After axillary and right ＞1000 36.66 area in F-FDG positron emission tomography (PET) supraclavicular lymph (Fig. 5). Ultrasonography guided FNA diagnosed LNM nodes metastasis of PTC in both in left axillary and right supraclavicular After the second* surgery 314.98 12.05 At present 24.63 8.1 area. Thus, a second operation was urgently required, and the right MRND and left axillary lymph node Tg-Ag: thyroglobulin antigen, Tg-Ab: thyroglobulin antibody *axillary dissection and right modified radical neck dissection dissections were performed in April 2012 (Fig. 6). Fig. 3. 151 mCi therapeutic whole body scan at 48 hours showing two intense accumulation of the I-131 in the mid thyroid bed and remnant pyramidal lobe, with a focal much less I-131 uptake in the left upper thyroid bed or neck lymph node. Vol. 7, No. 2, 2014 196 Axillary Lymph Node Metastasis of Papillary Thyroid Carcinoma: A Case Report Fig. 4. Diagnostic I-131 scan showing no longer iodine uptake in the thyroid bed. Fig. 5. PET showing hypermetabolic metastatic lymph nodes in right suprclavicular (A) and left axillary area (B). Pathological results confirmed the metastatic PTC (tall The therapeutic whole body scan reveals well uptake cell variant) of the left axillary lymph nodes (Fig. 7). of residual thyroid tissue in both thyroid bed (Fig. 8). Malignancy was not seen in the right neck lymph It was 9 months after his second surgery when the nodes. After recovery from the surgery, the patient re- metastasis of bone, especially on level 2 of the thora- ceived radioactive iodine therapy with I-131 180 mCi. cic spine (T2), was found on PET CT during the regu- 197 Clin Exp Thyroidol Eun Jung Koo and Mi Ri Lee lar follow up. At that time the level of Tg-Ag was 376.46 ng/mL and that of Tg-Ab was 4.88 IU/mL. The patient received novalis stereotactic radiotherapy (RT) on T2 (total RT dose: 4000 cGy). One year after RT, 18F-FDG PET shows normal glucose metabolism on bones and soft tissue, the level of Tg-Ag was 24.63 ng/mL and that of Tg-Ab was 8.1 IU/mL. Discussion Axillary masses suggest various diseases involving tumors, inflammatory conditions, and infections. Breast cancer is a major disease of axillary metastasis, so the Fig. 6. Intraoperative finding of axillary lymph node dissection. Fig. 7. The tumor shows papillary growths with numerous branches (H&E stain, x10) (A). The papillae of the tumor are lined by single layer or pseudostratified tall columnar cells with elongated nuclei (H&E stain, x200) (B). Fig. 8. The therapeutic whole body scan reveals well uptake of residual thyroid tissue in both thyroid bed. Vol. 7, No. 2, 2014 198 Axillary Lymph Node Metastasis of Papillary Thyroid Carcinoma: A Case Report probability of breast malignancy must be ruled out disease.6) There was no synchronous distant meta- when the axillary masses are detected. Other tumors stasis in our report, but metachronous bone metastasis may involve the axillary lymph nodes, such as in developed. However, the patient is still alive with lymphoma, melanoma, cancers of the head and neck, disease after RT. and occasionally carcinomas from various primary Krishnamurthy et al.7) summarized 7 reports written sites.1,2) Metastasis in breast cancer commonly occurs in English, describing the axillary LNM in PTC. The in the axillary lymph node; however, it is not known patients with axillary metastatic lesions predominantly as the potential site for thyroid cancer metastasis.
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